scala.swing

# BufferWrapper

#### abstract class BufferWrapper[A] extends Buffer[A]

Default partial implementation for buffer adapters.

Attributes
  protected
Self Type
  BufferWrapper[A]
Source
  BufferWrapper.scala

Linear Supertypes
Buffer[A], BufferLike[A, Buffer[A]], Subtractable[A, Buffer[A]], Scriptable[A], Shrinkable[A], Growable[A], Seq[A], SeqLike[A, Buffer[A]], Cloneable[Buffer[A]], Seq[A], SeqLike[A, Buffer[A]], GenSeq[A], GenSeqLike[A, Buffer[A]], PartialFunction[Int, A], (Int) ⇒ A, Iterable[A], Iterable[A], IterableLike[A, Buffer[A]], Equals, GenIterable[A], GenIterableLike[A, Buffer[A]], Traversable[A], Mutable, Traversable[A], GenTraversable[A], GenericTraversableTemplate[A, Buffer], TraversableLike[A, Buffer[A]], GenTraversableLike[A, Buffer[A]], Parallelizable[A, ParSeq[A]], TraversableOnce[A], GenTraversableOnce[A], FilterMonadic[A, Buffer[A]], HasNewBuilder[A, Buffer[A]], AnyRef, Any
Known Subclasses
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1. BufferWrapper
2. Buffer
3. BufferLike
4. Subtractable
5. Scriptable
6. Shrinkable
7. Growable
8. Seq
9. SeqLike
10. Cloneable
11. Seq
12. SeqLike
13. GenSeq
14. GenSeqLike
15. PartialFunction
16. Function1
17. Iterable
18. Iterable
19. IterableLike
20. Equals
21. GenIterable
22. GenIterableLike
23. Traversable
24. Mutable
25. Traversable
26. GenTraversable
27. GenericTraversableTemplate
28. TraversableLike
29. GenTraversableLike
30. Parallelizable
31. TraversableOnce
32. GenTraversableOnce
33. FilterMonadic
34. HasNewBuilder
35. AnyRef
36. Any

Visibility

1. Public
2. All

### Instance Constructors

1. #### new BufferWrapper()

### Type Members

1. #### type Self = Buffer[A]

   The type implementing this traversable

   The type implementing this traversable

   Attributes
     protected
   Definition Classes
     TraversableLike

2. #### class WithFilter extends FilterMonadic[A, Repr]

   A class supporting filtered operations.

### Abstract Value Members

1. #### abstract def +=(elem: A): BufferWrapper.this.type

   Appends a single element to this buffer.

   Appends a single element to this buffer.

   elem

     the element to append.

   returns

     the buffer itself

   Definition Classes
     BufferLike → Growable

2. #### abstract def apply(n: Int): A

   Selects an element by its index in the buffer.

   Selects an element by its index in the buffer.

   Example:

          scala> val x = LinkedList(1, 2, 3, 4, 5)
          x: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4, 5)

          scala> x(3)
          res1: Int = 4

   returns

     the element of this buffer at index `idx`, where `0` indicates the first element.

   Definition Classes
     BufferLike → SeqLike → GenSeqLike
   Exceptions thrown
     `IndexOutOfBoundsException`

     if `idx` does not satisfy `0 <= idx < length`.

3. #### abstract def insertAt(n: Int, a: A): Unit

   Attributes
     protected

4. #### abstract def length: Int

   The length of the buffer.

   The length of the buffer.

   Note: `xs.length` and `xs.size` yield the same result.

   returns

     the number of elements in this buffer.

   Definition Classes
     BufferLike → SeqLike → GenSeqLike

5. #### abstract def remove(n: Int): A

   Removes the element at a given index from this buffer.

   Removes the element at a given index from this buffer.

   n

     the index which refers to the element to delete.

   returns

     the previous element at index `n`

   Definition Classes
     BufferLike
   Exceptions thrown
     IndexOutOfBoundsException

     if the if the index `n` is not in the valid range `0 <= n < length`.

### Concrete Value Members

1. #### final def !=(arg0: AnyRef): Boolean

   Definition Classes
     AnyRef

2. #### final def !=(arg0: Any): Boolean

   Test two objects for inequality.

   Test two objects for inequality.

   returns

     `true` if !(this == that), false otherwise.

   Definition Classes
     Any

3. #### final def ##(): Int

   Equivalent to `x.hashCode` except for boxed numeric types and `null`.

   Equivalent to `x.hashCode` except for boxed numeric types and `null`. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For `null` returns a hashcode where `null.hashCode` throws a `NullPointerException`.

   returns

     a hash value consistent with ==

   Definition Classes
     AnyRef → Any

4. #### def ++(xs: GenTraversableOnce[A]): Buffer[A]

   Creates a new collection containing both the elements of this collection and the provided traversable object.

   Creates a new collection containing both the elements of this collection and the provided traversable object.

   xs

     the traversable object.

   returns

     a new collection consisting of all the elements of this collection and `xs`.

   Definition Classes
     BufferLike
   Annotations
     @migration
   Migration

     (Changed in version 2.8.0) `++` creates a new buffer. Use `++=` to add an element from this buffer and return that buffer itself.

5. #### def ++[B](that: GenTraversableOnce[B]): Buffer[B]

   [use case]

   [use case]
   B

     the element type of the returned collection.

   that

     the traversable to append.

   returns

     a new buffer which contains all elements of this buffer followed by all elements of `that`.

   Definition Classes
     TraversableLike → GenTraversableLike

6. #### def ++:[B >: A, That](that: Traversable[B])(implicit bf: CanBuildFrom[Buffer[A], B, That]): That

   As with `++`, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

   As with `++`, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

   It differs from `++` in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

   Example:

           scala> val x = List(1)
           x: List[Int] = List(1)

           scala> val y = LinkedList(2)
           y: scala.collection.mutable.LinkedList[Int] = LinkedList(2)

           scala> val z = x ++: y
           z: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)

   This overload exists because: for the implementation of `++:` we should reuse that of `++` because many collections override it with more efficient versions.

   Since `TraversableOnce` has no `++` method, we have to implement that directly, but `Traversable` and down can use the overload.

   B

     the element type of the returned collection.

   That

     the class of the returned collection. Where possible, `That` is the same class as the current collection class `Repr`, but this depends on the element type `B` being admissible for that class, which means that an implicit instance of type `CanBuildFrom[Repr, B, That]` is found.

   that

     the traversable to append.

   bf

     an implicit value of class `CanBuildFrom` which determines the result class `That` from the current representation type `Repr` and the new element type `B`.

   returns

     a new collection of type `That` which contains all elements of this buffer followed by all elements of `that`.

   Definition Classes
     TraversableLike

7. #### def ++:[B](that: TraversableOnce[B]): Buffer[B]

   [use case]

   [use case]
   B

     the element type of the returned collection.

   that

     the traversable to append.

   returns

     a new buffer which contains all elements of this buffer followed by all elements of `that`.

   Definition Classes
     TraversableLike

8. #### def ++=(xs: TraversableOnce[A]): BufferWrapper.this.type

   Appends all elements produced by a TraversableOnce to this buffer.

   Appends all elements produced by a TraversableOnce to this buffer.

   returns

     the buffer itself.

   Definition Classes
     Growable

9. #### def ++=:(xs: TraversableOnce[A]): BufferWrapper.this.type

   Prepends elements to this buffer.

   Prepends elements to this buffer.

   xs

     the TraversableOnce containing the elements to prepend.

   returns

     the buffer itself.

   Definition Classes
     BufferLike

10. #### def +:(elem: A): Buffer[A]

    [use case]

    [use case]
    elem

      the prepended element

    returns

      a new buffer consisting of `elem` followed by all elements of this buffer.

    Definition Classes
      SeqLike → GenSeqLike

11. #### def +=(elem1: A, elem2: A, elems: A*): BufferWrapper.this.type

    Appends two or more elements to this buffer.

    Appends two or more elements to this buffer.

    elem1

      the first element to append.

    elem2

      the second element to append.

    elems

      the remaining elements to append.

    returns

      the buffer itself

    Definition Classes
      Growable

12. #### def +=:(a: A): BufferWrapper.this.type

    Prepends a single element to this buffer.

    Prepends a single element to this buffer.

    returns

      the buffer itself.

    Definition Classes
      BufferWrapper → BufferLike

13. #### def -(elem1: A, elem2: A, elems: A*): Buffer[A]

    Creates a new collection with all the elements of this collection except the two or more specified elements.

    Creates a new collection with all the elements of this collection except the two or more specified elements.

    elem1

      the first element to remove.

    elem2

      the second element to remove.

    elems

      the remaining elements to remove.

    returns

      a new collection consisting of all the elements of this collection except `elem1`, `elem2` and those in `elems`.

    Definition Classes
      BufferLike → Subtractable
    Annotations
      @migration
    Migration

      (Changed in version 2.8.0) `-` creates a new buffer. Use `-=` to remove an element from this buffer and return that buffer itself.

14. #### def -(elem: A): Buffer[A]

    Creates a new collection with all the elements of this collection except `elem`.

    Creates a new collection with all the elements of this collection except `elem`.

    elem

      the element to remove.

    returns

      a new collection consisting of all the elements of this collection except `elem`.

    Definition Classes
      BufferLike → Subtractable
    Annotations
      @migration
    Migration

      (Changed in version 2.8.0) `-` creates a new buffer. Use `-=` to remove an element from this buffer and return that buffer itself.

15. #### def --(xs: GenTraversableOnce[A]): Buffer[A]

    Creates a new collection with all the elements of this collection except those provided by the specified traversable object.

    Creates a new collection with all the elements of this collection except those provided by the specified traversable object.

    xs

      the traversable object.

    returns

      a new collection with all the elements of this collection except those in `xs`

    Definition Classes
      BufferLike → Subtractable
    Annotations
      @migration
    Migration

      (Changed in version 2.8.0) `--` creates a new buffer. Use `--=` to remove an element from this buffer and return that buffer itself.

16. #### def --=(xs: TraversableOnce[A]): BufferWrapper.this.type

    Removes all elements produced by an iterator from this buffer.

    Removes all elements produced by an iterator from this buffer.

    returns

      the buffer itself

    Definition Classes
      Shrinkable

17. #### def -=(x: A): BufferWrapper.this.type

    Removes a single element from this buffer, at its first occurrence.

    Removes a single element from this buffer, at its first occurrence. If the buffer does not contain that element, it is unchanged.

    x

      the element to remove.

    returns

      the buffer itself

    Definition Classes
      BufferLike → Shrinkable

18. #### def -=(elem1: A, elem2: A, elems: A*): BufferWrapper.this.type

    Removes two or more elements from this buffer.

    Removes two or more elements from this buffer.

    elem1

      the first element to remove.

    elem2

      the second element to remove.

    elems

      the remaining elements to remove.

    returns

      the buffer itself

    Definition Classes
      Shrinkable

19. #### def /:[B](z: B)(op: (B, A) ⇒ B): B

    Applies a binary operator to a start value and all elements of this buffer, going left to right.

    Applies a binary operator to a start value and all elements of this buffer, going left to right.

    Note: `/:` is alternate syntax for `foldLeft`; `z /: xs` is the same as `xs foldLeft z`.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = (5 /: a)(_+_)
             b: Int = 15

             scala> val c = (5 /: a)((x,y) => x + y)
             c: Int = 15

    B

      the result type of the binary operator.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this buffer, going left to right with the start value `z` on the left:

                      op(...op(op(z, x1), x2), ..., xn)

      where `x1, ..., xn` are the elements of this buffer.

    Definition Classes
      TraversableOnce → GenTraversableOnce

20. #### def /:\[A1 >: A](z: A1)(op: (A1, A1) ⇒ A1): A1

    A syntactic sugar for out of order folding.

    A syntactic sugar for out of order folding. See `fold`.

    Example:

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = (a /:\ 5)(_+_)
             b: Int = 15

    Definition Classes
      GenTraversableOnce

21. #### def :+(elem: A): Buffer[A]

    [use case]

    [use case]
    elem

      the appended element

    returns

      a new buffer consisting of all elements of this buffer followed by `elem`. @example

                scala> import scala.collection.mutable.LinkedList
                import scala.collection.mutable.LinkedList

                scala> val a = LinkedList(1)
                a: scala.collection.mutable.LinkedList[Int] = LinkedList(1)

                scala> val b = a :+ 2
                b: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)

                scala> println(a)
                LinkedList(1)

    Definition Classes
      SeqLike → GenSeqLike

22. #### def :\[B](z: B)(op: (A, B) ⇒ B): B

    Applies a binary operator to all elements of this buffer and a start value, going right to left.

    Applies a binary operator to all elements of this buffer and a start value, going right to left.

    Note: `:\` is alternate syntax for `foldRight`; `xs :\ z` is the same as `xs foldRight z`.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = (a :\ 5)(_+_)
             b: Int = 15

             scala> val c = (a :\ 5)((x,y) => x + y)
             c: Int = 15

    B

      the result type of the binary operator.

    z

      the start value

    op

      the binary operator

    returns

      the result of inserting `op` between consecutive elements of this buffer, going right to left with the start value `z` on the right:

                      op(x1, op(x2, ... op(xn, z)...))

      where `x1, ..., xn` are the elements of this buffer.

    Definition Classes
      TraversableOnce → GenTraversableOnce

23. #### def <<(cmd: Message[A]): Unit

    Send a message to this scriptable object.

    Send a message to this scriptable object.

    cmd

      the message to send.

    Definition Classes
      BufferLike → Scriptable

24. #### final def ==(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

25. #### final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

    returns

      `true` if the receiver object is equivalent to the argument; `false` otherwise.

    Definition Classes
      Any

26. #### def addString(b: StringBuilder): StringBuilder

    Appends all elements of this buffer to a string builder.

    Appends all elements of this buffer to a string builder. The written text consists of the string representations (w.r.t. the method `toString`) of all elements of this buffer without any separator string.

    Example:

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = new StringBuilder()
             b: StringBuilder =

             scala> val h = a.addString(b)
             b: StringBuilder = 1234

    b

      the string builder to which elements are appended.

    returns

      the string builder `b` to which elements were appended.

    Definition Classes
      TraversableOnce

27. #### def addString(b: StringBuilder, sep: String): StringBuilder

    Appends all elements of this buffer to a string builder using a separator string.

    Appends all elements of this buffer to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method `toString`) of all elements of this buffer, separated by the string `sep`.

    Example:

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = new StringBuilder()
             b: StringBuilder =

             scala> a.addString(b, ", ")
             res0: StringBuilder = 1, 2, 3, 4

    b

      the string builder to which elements are appended.

    sep

      the separator string.

    returns

      the string builder `b` to which elements were appended.

    Definition Classes
      TraversableOnce

28. #### def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

    Appends all elements of this buffer to a string builder using start, end, and separator strings.

    Appends all elements of this buffer to a string builder using start, end, and separator strings. The written text begins with the string `start` and ends with the string `end`. Inside, the string representations (w.r.t. the method `toString`) of all elements of this buffer are separated by the string `sep`.

    Example:

             scala> val a = LinkedList(1,2,3,4)
             a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)

             scala> val b = new StringBuilder()
             b: StringBuilder =

             scala> a.addString(b, "LinkedList(", ", ", ")")
             res1: StringBuilder = LinkedList(1, 2, 3, 4)

    b

      the string builder to which elements are appended.

    start

      the starting string.

    sep

      the separator string.

    end

      the ending string.

    returns

      the string builder `b` to which elements were appended.

    Definition Classes
      TraversableOnce

29. #### def aggregate[B](z: B)(seqop: (B, A) ⇒ B, combop: (B, B) ⇒ B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    This is a more general form of `fold` and `reduce`. It has similar semantics, but does not require the result to be a supertype of the element type. It traverses the elements in different partitions sequentially, using `seqop` to update the result, and then applies `combop` to results from different partitions. The implementation of this operation may operate on an arbitrary number of collection partitions, so `combop` may be invoked an arbitrary number of times.

    For example, one might want to process some elements and then produce a `Set`. In this case, `seqop` would process an element and append it to the list, while `combop` would concatenate two lists from different partitions together. The initial value `z` would be an empty set.

           pc.aggregate(Set[Int]())(_ += process(_), _ ++ _)

    Another example is calculating geometric mean from a collection of doubles (one would typically require big doubles for this).

    B

      the type of accumulated results

    z

      the initial value for the accumulated result of the partition - this will typically be the neutral element for the `seqop` operator (e.g. `Nil` for list concatenation or `0` for summation)

    seqop

      an operator used to accumulate results within a partition

    combop

      an associative operator used to combine results from different partitions

    Definition Classes
      TraversableOnce → GenTraversableOnce

30. #### def andThen[C](k: (A) ⇒ C): PartialFunction[Int, C]

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    C

      the result type of the transformation function.

    k

      the transformation function

    returns

      a partial function with the same domain as this partial function, which maps arguments `x` to `k(this(x))`.

    Definition Classes
      PartialFunction → Function1

31. #### def append(elems: A*): Unit

    Appends the given elements to this buffer.

    Appends the given elements to this buffer.

    elems

      the elements to append.

    Definition Classes
      BufferLike

32. #### def appendAll(xs: TraversableOnce[A]): Unit

    Appends the elements contained in a traversable object to this buffer.

    Appends the elements contained in a traversable object to this buffer.

    xs

      the traversable object containing the elements to append.

    Definition Classes
      BufferLike

33. #### final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type `T0`.

    Cast the receiver object to be of type `T0`.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression `1.asInstanceOf[String]` will throw a `ClassCastException` at runtime, while the expression `List(1).asInstanceOf[List[String]]` will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

      the receiver object.

    Definition Classes
      Any
    Exceptions thrown
      ClassCastException

      if the receiver object is not an instance of the erasure of type `T0`.

34. #### def canEqual(that: Any): Boolean

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    that

      The object with which this buffer should be compared

    returns

      `true`, if this buffer can possibly equal `that`, `false` otherwise. The test takes into consideration only the run-time types of objects but ignores their elements.

    Definition Classes
      IterableLike → Equals

35. #### def clear(): Unit

    Clears the buffer's contents.

    Clears the buffer's contents. After this operation, the buffer is empty.

    Definition Classes
      BufferWrapper → BufferLike → Growable

36. #### def clone(): Buffer[A]

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the `clone` method is platform dependent.

    returns

      a copy of the receiver object.

    Definition Classes
      Cloneable → AnyRef
    Note

      not specified by SLS as a member of AnyRef

37. #### def collect[B](pf: PartialFunction[A, B]): Buffer[B]

    [use case]

    [use case]
    B

      the element type of the returned collection.

    pf

      the partial function which filters and maps the buffer.

    returns

      a new buffer resulting from applying the given partial function `pf` to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
      TraversableLike → GenTraversableLike

38. #### def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

    Finds the first element of the buffer for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the buffer for which the given partial function is defined, and applies the partial function to it.

    pf

      the partial function

    returns

      an option value containing pf applied to the first value for which it is defined, or `None` if none exists.

    Definition Classes
      TraversableOnce
    Example:

    1. `Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)`

39. #### def combinations(n: Int): Iterator[Buffer[A]]

    Iterates over combinations.

    Iterates over combinations.

    returns

      An Iterator which traverses the possible n-element combinations of this buffer.

    Definition Classes
      SeqLike
    Example:

    1. `"abbbc".combinations(2) = Iterator(ab, ac, bb, bc)`

40. #### def companion: GenericCompanion[Buffer]

    The factory companion object that builds instances of class Buffer.

    The factory companion object that builds instances of class Buffer. (or its `Iterable` superclass where class Buffer is not a `Seq`.)

    Definition Classes
      Buffer → Seq → Seq → GenSeq → Iterable → Iterable → GenIterable → Traversable → Traversable → GenTraversable → GenericTraversableTemplate

41. #### def compose[A](g: (A) ⇒ Int): (A) ⇒ A

    Composes two instances of Function1 in a new Function1, with this function applied last.

    Composes two instances of Function1 in a new Function1, with this function applied last.

    A

      the type to which function `g` can be applied

    g

      a function A => T1

    returns

      a new function `f` such that `f(x) == apply(g(x))`

    Definition Classes
      Function1

42. #### def contains(elem: Any): Boolean

    Tests whether this buffer contains a given value as an element.

    Tests whether this buffer contains a given value as an element.

    elem

      the element to test.

    returns

      `true` if this buffer has an element that is is equal (wrt `==`) to `elem`, `false` otherwise.

    Definition Classes
      SeqLike

43. #### def containsSlice[B](that: GenSeq[B]): Boolean

    Tests whether this buffer contains a given sequence as a slice.

    Tests whether this buffer contains a given sequence as a slice.

    that

      the sequence to test

    returns

      `true` if this buffer contains a slice with the same elements as `that`, otherwise `false`.

    Definition Classes
      SeqLike

44. #### def copyToArray(xs: Array[A], start: Int, len: Int): Unit

    [use case]

    [use case]
    xs

      the array to fill.

    start

      the starting index.

    len

      the maximal number of elements to copy.

    Definition Classes
      IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce

45. #### def copyToArray(xs: Array[A]): Unit

    [use case]

    [use case]
    xs

      the array to fill.

    Definition Classes
      TraversableOnce → GenTraversableOnce

46. #### def copyToArray(xs: Array[A], start: Int): Unit

    [use case]

    [use case]
    xs

      the array to fill.

    start

      the starting index.

    Definition Classes
      TraversableOnce → GenTraversableOnce

47. #### def copyToBuffer[B >: A](dest: Buffer[B]): Unit

    Copies all elements of this buffer to a buffer.

    Copies all elements of this buffer to a buffer.

    dest

      The buffer to which elements are copied.

    Definition Classes
      TraversableOnce

48. #### def corresponds[B](that: GenSeq[B])(p: (A, B) ⇒ Boolean): Boolean

    Tests whether every element of this buffer relates to the corresponding element of another sequence by satisfying a test predicate.

    Tests whether every element of this buffer relates to the corresponding element of another sequence by satisfying a test predicate.

    B

      the type of the elements of `that`

    that

      the other sequence

    p

      the test predicate, which relates elements from both sequences

    returns

      `true` if both sequences have the same length and `p(x, y)` is `true` for all corresponding elements `x` of this buffer and `y` of `that`, otherwise `false`.

    Definition Classes
      SeqLike → GenSeqLike

49. #### def count(p: (A) ⇒ Boolean): Int

    Counts the number of elements in the buffer which satisfy a predicate.

    Counts the number of elements in the buffer which satisfy a predicate.

    p

      the predicate used to test elements.

    returns

      the number of elements satisfying the predicate `p`.

    Definition Classes
      TraversableOnce → GenTraversableOnce

50. #### def diff(that: Seq[A]): Buffer[A]

    [use case]

    [use case]
    that

      the sequence of elements to remove

    returns

      a new buffer which contains all elements of this buffer except some of occurrences of elements that also appear in `that`. If an element value `x` appears n times in `that`, then the first n occurrences of `x` will not form part of the result, but any following occurrences will.

    Definition Classes
      SeqLike → GenSeqLike

51. #### def distinct: Buffer[A]

    Builds a new buffer from this buffer without any duplicate elements.

    Builds a new buffer from this buffer without any duplicate elements.

    returns

      A new buffer which contains the first occurrence of every element of this buffer.

    Definition Classes
      SeqLike → GenSeqLike

52. #### def drop(n: Int): Buffer[A]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    n

      the number of elements to drop from this buffer.

    returns

      a buffer consisting of all elements of this buffer except the first `n` ones, or else the empty buffer, if this buffer has less than `n` elements.

    Definition Classes
      IterableLike → TraversableLike → GenTraversableLike

53. #### def dropRight(n: Int): Buffer[A]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    n

      The number of elements to take

    returns

      a buffer consisting of all elements of this buffer except the last `n` ones, or else the empty buffer, if this buffer has less than `n` elements.

    Definition Classes
      IterableLike

54. #### def dropWhile(p: (A) ⇒ Boolean): Buffer[A]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    p

      The predicate used to test elements.

    returns

      the longest suffix of this buffer whose first element does not satisfy the predicate `p`.

    Definition Classes
      TraversableLike → GenTraversableLike

55. #### def endsWith[B](that: GenSeq[B]): Boolean

    Tests whether this buffer ends with the given sequence.

    Tests whether this buffer ends with the given sequence.

    that

      the sequence to test

    returns

      `true` if this buffer has `that` as a suffix, `false` otherwise.

    Definition Classes
      SeqLike → GenSeqLike

56. #### final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (`arg0`) is a reference to the receiver object (`this`).

    Tests whether the argument (`arg0`) is a reference to the receiver object (`this`).

    The `eq` method implements an equivalence relation on non-null instances of `AnyRef`, and has three additional properties:

    - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
    - For any non-null instance `x` of type `AnyRef`, `x.eq(null)` and `null.eq(x)` returns `false`.
    - `null.eq(null)` returns `true`.

    When overriding the `equals` or `hashCode` methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (`o1 eq o2`), they should be equal to each other (`o1 == o2`) and they should hash to the same value (`o1.hashCode == o2.hashCode`).

    returns

      `true` if the argument is a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef

57. #### def equals(that: Any): Boolean

    The equals method for arbitrary sequences.

    The equals method for arbitrary sequences. Compares this sequence to some other object.

    that

      The object to compare the sequence to

    returns

      `true` if `that` is a sequence that has the same elements as this sequence in the same order, `false` otherwise

    Definition Classes
      GenSeqLike → Equals → AnyRef → Any

58. #### def exists(p: (A) ⇒ Boolean): Boolean

    Tests whether a predicate holds for some of the elements of this buffer.

    Tests whether a predicate holds for some of the elements of this buffer.

    p

      the predicate used to test elements.

    returns

      `true` if the given predicate `p` holds for some of the elements of this buffer, otherwise `false`.

    Definition Classes
      IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce

59. #### def filter(p: (A) ⇒ Boolean): Buffer[A]

    Selects all elements of this buffer which satisfy a predicate.

    Selects all elements of this buffer which satisfy a predicate.

    p

      the predicate used to test elements.

    returns

      a new buffer consisting of all elements of this buffer that satisfy the given predicate `p`. The order of the elements is preserved.

    Definition Classes
      TraversableLike → GenTraversableLike

60. #### def filterNot(p: (A) ⇒ Boolean): Buffer[A]

    Selects all elements of this buffer which do not satisfy a predicate.

    Selects all elements of this buffer which do not satisfy a predicate.

    p

      the predicate used to test elements.

    returns

      a new buffer consisting of all elements of this buffer that do not satisfy the given predicate `p`. The order of the elements is preserved.

    Definition Classes
      TraversableLike → GenTraversableLike

61. #### def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the `finalize` method is invoked, as well as the interaction between `finalize` and non-local returns and exceptions, are all platform dependent.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws()
    Note

      not specified by SLS as a member of AnyRef

62. #### def find(p: (A) ⇒ Boolean): Option[A]

    Finds the first element of the buffer satisfying a predicate, if any.

    Finds the first element of the buffer satisfying a predicate, if any.

    p

      the predicate used to test elements.

    returns

      an option value containing the first element in the buffer that satisfies `p`, or `None` if none exists.

    Definition Classes
      IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce

63. #### def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): Buffer[B]

    [use case]

    [use case]
    B

      the element type of the returned collection.

    f

      the function to apply to each element.

    returns

      a new buffer resulting from applying the given collection-valued function `f` to each element of this buffer and concatenating the results.

    Definition Classes
      TraversableLike → GenTraversableLike → FilterMonadic

64. #### def fold[A1 >: A](z: A1)(op: (A1, A1) ⇒ A1): A1

    Folds the elements of this buffer using the specified associative binary operator.

    Folds the elements of this buffer using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

      a type parameter for the binary operator, a supertype of `A`.

    z

      a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., `Nil` for list concatenation, 0 for addition, or 1 for multiplication.)

    op

      a binary operator that must be associative

    returns

      the result of applying fold operator `op` between all the elements and `z`

    Definition Classes
      TraversableOnce → GenTraversableOnce

65. #### def foldLeft[B](z: B)(op: (B, A) ⇒ B): B

    Applies a binary operator to a start value and all elements of this buffer, going left to right.

    Applies a binary operator to a start value and all elements of this buffer, going left to right.

    B

      the result type of the binary operator.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this buffer, going left to right with the start value `z` on the left:

                      op(...op(z, x1), x2, ..., xn)

      where `x1, ..., xn` are the elements of this buffer.

    Definition Classes
      TraversableOnce → GenTraversableOnce

66. #### def foldRight[B](z: B)(op: (A, B) ⇒ B): B

    Applies a binary operator to all elements of this buffer and a start value, going right to left.

    Applies a binary operator to all elements of this buffer and a start value, going right to left.

    B

      the result type of the binary operator.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this buffer, going right to left with the start value `z` on the right:

                      op(x1, op(x2, ... op(xn, z)...))

      where `x1, ..., xn` are the elements of this buffer.

    Definition Classes
      IterableLike → TraversableOnce → GenTraversableOnce

67. #### def forall(p: (A) ⇒ Boolean): Boolean

    Tests whether a predicate holds for all elements of this buffer.

    Tests whether a predicate holds for all elements of this buffer.

    p

      the predicate used to test elements.

    returns

      `true` if the given predicate `p` holds for all elements of this buffer, otherwise `false`.

    Definition Classes
      IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce

68. #### def foreach(f: (A) ⇒ Unit): Unit

    [use case]

    [use case]
    f

      the function that is applied for its side-effect to every element. The result of function `f` is discarded.

    Definition Classes
      IterableLike → TraversableLike → GenTraversableLike → TraversableOnce → GenTraversableOnce → FilterMonadic

69. #### def genericBuilder[B]: Builder[B, Buffer[B]]

    The generic builder that builds instances of Buffer at arbitrary element types.

    The generic builder that builds instances of Buffer at arbitrary element types.

    Definition Classes
      GenericTraversableTemplate

70. #### final def getClass(): Class[_]

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

      a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
      AnyRef → Any
    Note

      not specified by SLS as a member of AnyRef

71. #### def groupBy[K](f: (A) ⇒ K): Map[K, Buffer[A]]

    Partitions this buffer into a map of buffers according to some discriminator function.

    Partitions this buffer into a map of buffers according to some discriminator function.

    Note: this method is not re-implemented by views. This means when applied to a view it will always force the view and return a new buffer.

    K

      the type of keys returned by the discriminator function.

    f

      the discriminator function.

    returns

      A map from keys to buffers such that the following invariant holds:

                          (xs partition f)(k) = xs filter (x => f(x) == k)

      That is, every key `k` is bound to a buffer of those elements `x` for which `f(x)` equals `k`.

    Definition Classes
      TraversableLike → GenTraversableLike

72. #### def grouped(size: Int): Iterator[Buffer[A]]

    Partitions elements in fixed size buffers.

    Partitions elements in fixed size buffers.

    size

      the number of elements per group

    returns

      An iterator producing buffers of size `size`, except the last will be truncated if the elements don't divide evenly.

    Definition Classes
      IterableLike
    See also

      Iterator#grouped

73. #### def hasDefiniteSize: Boolean

    Tests whether this buffer is known to have a finite size.

    Tests whether this buffer is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as `Stream`, the predicate returns `true` if all elements have been computed. It returns `false` if the stream is not yet evaluated to the end.

    Note: many collection methods will not work on collections of infinite sizes.

    returns

      `true` if this collection is known to have finite size, `false` otherwise.

    Definition Classes
      TraversableLike → TraversableOnce → GenTraversableOnce

74. #### def hashCode(): Int

    Hashcodes for Buffer produce a value from the hashcodes of all the elements of the buffer.

    Hashcodes for Buffer produce a value from the hashcodes of all the elements of the buffer.

    returns

      the hash code value for this object.

    Definition Classes
      GenSeqLike → AnyRef → Any

75. #### def head: A

    Selects the first element of this buffer.

    Selects the first element of this buffer.

    returns

      the first element of this buffer.

    Definition Classes
      IterableLike → GenIterableLike → TraversableLike → GenTraversableLike
    Exceptions thrown
      `NoSuchElementException`

      if the buffer is empty.

76. #### def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    returns

      the first element of this buffer if it is nonempty, `None` if it is empty.

    Definition Classes
      TraversableLike

77. #### def indexOf(elem: A, from: Int): Int

    [use case]

    [use case]
    elem

      the element value to search for.

    from

      the start index

    returns

      the index `>= from` of the first element of this buffer that is equal (wrt `==`) to `elem`, or `-1`, if none exists.

    Definition Classes
      GenSeqLike

78. #### def indexOf(elem: A): Int

    [use case]

    [use case]
    elem

      the element value to search for.

    returns

      the index of the first element of this buffer that is equal (wrt `==`) to `elem`, or `-1`, if none exists.

    Definition Classes
      GenSeqLike

79. #### def indexOfSlice[B >: A](that: GenSeq[B], from: Int): Int

    Finds first index after or at a start index where this buffer contains a given sequence as a slice.

    Finds first index after or at a start index where this buffer contains a given sequence as a slice.

    that

      the sequence to test

    from

      the start index

    returns

      the first index `>= from` such that the elements of this buffer starting at this index match the elements of sequence `that`, or `-1` of no such subsequence exists.

    Definition Classes
      SeqLike

80. #### def indexOfSlice[B >: A](that: GenSeq[B]): Int

    Finds first index where this buffer contains a given sequence as a slice.

    Finds first index where this buffer contains a given sequence as a slice.

    that

      the sequence to test

    returns

      the first index such that the elements of this buffer starting at this index match the elements of sequence `that`, or `-1` of no such subsequence exists.

    Definition Classes
      SeqLike

81. #### def indexWhere(p: (A) ⇒ Boolean, from: Int): Int

    Finds index of the first element satisfying some predicate after or at some start index.

    Finds index of the first element satisfying some predicate after or at some start index.

    p

      the predicate used to test elements.

    from

      the start index

    returns

      the index `>= from` of the first element of this buffer that satisfies the predicate `p`, or `-1`, if none exists.

    Definition Classes
      SeqLike → GenSeqLike

82. #### def indexWhere(p: (A) ⇒ Boolean): Int

    Finds index of first element satisfying some predicate.

    Finds index of first element satisfying some predicate.

    p

      the predicate used to test elements.

    returns

      the index of the first element of this buffer that satisfies the predicate `p`, or `-1`, if none exists.

    Definition Classes
      GenSeqLike

83. #### def indices: Range

    Produces the range of all indices of this sequence.

    Produces the range of all indices of this sequence.

    returns

      a `Range` value from `0` to one less than the length of this buffer.

    Definition Classes
      SeqLike

84. #### def init: Buffer[A]

    Selects all elements except the last.

    Selects all elements except the last.

    returns

      a buffer consisting of all elements of this buffer except the last one.

    Definition Classes
      TraversableLike
    Exceptions thrown
      `UnsupportedOperationException`

      if the buffer is empty.

85. #### def inits: Iterator[Buffer[A]]

    Iterates over the inits of this buffer.

    Iterates over the inits of this buffer. The first value will be this buffer and the final one will be an empty buffer, with the intervening values the results of successive applications of `init`.

    returns

      an iterator over all the inits of this buffer

    Definition Classes
      TraversableLike
    Example:

    1. `List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)`

86. #### def insert(n: Int, elems: A*): Unit

    Inserts new elements at a given index into this buffer.

    Inserts new elements at a given index into this buffer.

    n

      the index where new elements are inserted.

    elems

      the traversable collection containing the elements to insert.

    Definition Classes
      BufferLike
    Exceptions thrown
      IndexOutOfBoundsException

      if the index `n` is not in the valid range `0 <= n <= length`.

87. #### def insertAll(n: Int, elems: Traversable[A]): Unit

    Inserts new elements at a given index into this buffer.

    Inserts new elements at a given index into this buffer.

    n

      the index where new elements are inserted.

    elems

      the traversable collection containing the elements to insert.

    Definition Classes
      BufferWrapper → BufferLike
    Exceptions thrown
      IndexOutOfBoundsException

      if the index `n` is not in the valid range `0 <= n <= length`.

88. #### def intersect(that: Seq[A]): Buffer[A]

    [use case]

    [use case]
    that

      the sequence of elements to intersect with.

    returns

      a new buffer which contains all elements of this buffer which also appear in `that`. If an element value `x` appears n times in `that`, then the first n occurrences of `x` will be retained in the result, but any following occurrences will be omitted.

    Definition Classes
      SeqLike → GenSeqLike

89. #### def isDefinedAt(idx: Int): Boolean

    Tests whether this buffer contains given index.

    Tests whether this buffer contains given index.

    The implementations of methods `apply` and `isDefinedAt` turn a `Seq[A]` into a `PartialFunction[Int, A]`.

    idx

      the index to test

    returns

      `true` if this buffer contains an element at position `idx`, `false` otherwise.

    Definition Classes
      GenSeqLike

90. #### def isEmpty: Boolean

    Tests whether the buffer is empty.

    Tests whether the buffer is empty.

    returns

      `true` if the buffer contains no elements, `false` otherwise.

    Definition Classes
      IterableLike → GenIterableLike → TraversableLike → TraversableOnce → GenTraversableOnce

91. #### final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is `T0`.

    Test whether the dynamic type of the receiver object is `T0`.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression `1.isInstanceOf[String]` will return `false`, while the expression `List(1).isInstanceOf[List[String]]` will return `true`. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

      `true` if the receiver object is an instance of erasure of type `T0`; `false` otherwise.

    Definition Classes
      Any

92. #### final def isTraversableAgain: Boolean

    Tests whether this buffer can be repeatedly traversed.

    Tests whether this buffer can be repeatedly traversed.

    returns

      `true`

    Definition Classes
      GenTraversableLike → GenTraversableOnce

93. #### def iterator: Iterator[A]

    Creates a new iterator over all elements contained in this iterable object.

    Creates a new iterator over all elements contained in this iterable object.

    returns

      the new iterator

    Definition Classes
      BufferWrapper → IterableLike → GenIterableLike

94. #### def last: A

    Selects the last element.

    Selects the last element.

    returns

      The last element of this buffer.

    Definition Classes
      TraversableLike
    Exceptions thrown
      NoSuchElementException

      If the buffer is empty.

95. #### def lastIndexOf(elem: A, end: Int): Int

    [use case]

    [use case]
    elem

      the element value to search for.

    end

      the end index.

    returns

      the index `<= end` of the last element of this buffer that is equal (wrt `==`) to `elem`, or `-1`, if none exists.

    Definition Classes
      GenSeqLike

96. #### def lastIndexOf(elem: A): Int

    [use case]

    [use case]
    elem

      the element value to search for.

    returns

      the index of the last element of this buffer that is equal (wrt `==`) to `elem`, or `-1`, if none exists.

    Definition Classes
      GenSeqLike

97. #### def lastIndexOfSlice[B >: A](that: GenSeq[B], end: Int): Int

    Finds last index before or at a given end index where this buffer contains a given sequence as a slice.

    Finds last index before or at a given end index where this buffer contains a given sequence as a slice.

    that

      the sequence to test

    end

      the end index

    returns

      the last index `<= end` such that the elements of this buffer starting at this index match the elements of sequence `that`, or `-1` of no such subsequence exists.

    Definition Classes
      SeqLike

98. #### def lastIndexOfSlice[B >: A](that: GenSeq[B]): Int

    Finds last index where this buffer contains a given sequence as a slice.

    Finds last index where this buffer contains a given sequence as a slice.

    that

      the sequence to test

    returns

      the last index such that the elements of this buffer starting a this index match the elements of sequence `that`, or `-1` of no such subsequence exists.

    Definition Classes
      SeqLike

99. #### def lastIndexWhere(p: (A) ⇒ Boolean, end: Int): Int

    Finds index of last element satisfying some predicate before or at given end index.

    Finds index of last element satisfying some predicate before or at given end index.

    p

      the predicate used to test elements.

    returns

      the index `<= end` of the last element of this buffer that satisfies the predicate `p`, or `-1`, if none exists.

    Definition Classes
      SeqLike → GenSeqLike

100. #### def lastIndexWhere(p: (A) ⇒ Boolean): Int

     Finds index of last element satisfying some predicate.

     Finds index of last element satisfying some predicate.

     p

       the predicate used to test elements.

     returns

       the index of the last element of this buffer that satisfies the predicate `p`, or `-1`, if none exists.

     Definition Classes
       GenSeqLike

101. #### def lastOption: Option[A]

     Optionally selects the last element.

     Optionally selects the last element.

     returns

       the last element of this buffer$ if it is nonempty, `None` if it is empty.

     Definition Classes
       TraversableLike

102. #### def lengthCompare(len: Int): Int

     Compares the length of this buffer to a test value.

     Compares the length of this buffer to a test value.

     len

       the test value that gets compared with the length.

     returns

       A value `x` where

                  x <  0       if this.length <  len
                  x == 0       if this.length == len
                  x >  0       if this.length >  len

       The method as implemented here does not call `length` directly; its running time is `O(length min len)` instead of `O(length)`. The method should be overwritten if computing `length` is cheap.

     Definition Classes
       SeqLike

103. #### def lift: (Int) ⇒ Option[A]

     Turns this partial function into an plain function returning an `Option` result.

     Turns this partial function into an plain function returning an `Option` result.

     returns

       a function that takes an argument `x` to `Some(this(x))` if `this` is defined for `x`, and to `None` otherwise.

     Definition Classes
       PartialFunction
     See also

       Function.unlift

104. #### def map[B](f: (A) ⇒ B): Buffer[B]

     [use case]

     [use case]
     B

       the element type of the returned collection.

     f

       the function to apply to each element.

     returns

       a new buffer resulting from applying the given function `f` to each element of this buffer and collecting the results.

     Definition Classes
       TraversableLike → GenTraversableLike → FilterMonadic

105. #### def max: A

     [use case]

     [use case]
     returns

       the largest element of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

106. #### def maxBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

     Definition Classes
       TraversableOnce → GenTraversableOnce

107. #### def min: A

     [use case]

     [use case]
     returns

       the smallest element of this buffer

     Definition Classes
       TraversableOnce → GenTraversableOnce

108. #### def minBy[B](f: (A) ⇒ B)(implicit cmp: Ordering[B]): A

     Definition Classes
       TraversableOnce → GenTraversableOnce

109. #### def missingCase(x: Int): A

     Attributes
       protected
     Definition Classes
       PartialFunction

110. #### def mkString: String

     Displays all elements of this buffer in a string.

     Displays all elements of this buffer in a string.

     returns

       a string representation of this buffer. In the resulting string the string representations (w.r.t. the method `toString`) of all elements of this buffer follow each other without any separator string.

     Definition Classes
       TraversableOnce → GenTraversableOnce

111. #### def mkString(sep: String): String

     Displays all elements of this buffer in a string using a separator string.

     Displays all elements of this buffer in a string using a separator string.

     sep

       the separator string.

     returns

       a string representation of this buffer. In the resulting string the string representations (w.r.t. the method `toString`) of all elements of this buffer are separated by the string `sep`.

     Definition Classes
       TraversableOnce → GenTraversableOnce
     Example:

     1. `List(1, 2, 3).mkString("|") = "1|2|3"`

112. #### def mkString(start: String, sep: String, end: String): String

     Displays all elements of this buffer in a string using start, end, and separator strings.

     Displays all elements of this buffer in a string using start, end, and separator strings.

     start

       the starting string.

     sep

       the separator string.

     end

       the ending string.

     returns

       a string representation of this buffer. The resulting string begins with the string `start` and ends with the string `end`. Inside, the string representations (w.r.t. the method `toString`) of all elements of this buffer are separated by the string `sep`.

     Definition Classes
       TraversableOnce → GenTraversableOnce
     Example:

     1. `List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"`

113. #### final def ne(arg0: AnyRef): Boolean

     Equivalent to `!(this eq that)`.

     Equivalent to `!(this eq that)`.

     returns

       `true` if the argument is not a reference to the receiver object; `false` otherwise.

     Definition Classes
       AnyRef

114. #### def newBuilder: Builder[A, Buffer[A]]

     The builder that builds instances of type Buffer[A]

     The builder that builds instances of type Buffer[A]

     Attributes
       protected[this]
     Definition Classes
       GenericTraversableTemplate → HasNewBuilder

115. #### def nonEmpty: Boolean

     Tests whether the buffer is not empty.

     Tests whether the buffer is not empty.

     returns

       `true` if the buffer contains at least one element, `false` otherwise.

     Definition Classes
       TraversableOnce → GenTraversableOnce

116. #### final def notify(): Unit

     Wakes up a single thread that is waiting on the receiver object's monitor.

     Wakes up a single thread that is waiting on the receiver object's monitor.

     Definition Classes
       AnyRef
     Note

       not specified by SLS as a member of AnyRef

117. #### final def notifyAll(): Unit

     Wakes up all threads that are waiting on the receiver object's monitor.

     Wakes up all threads that are waiting on the receiver object's monitor.

     Definition Classes
       AnyRef
     Note

       not specified by SLS as a member of AnyRef

118. #### def orElse[A1 <: Int, B1 >: A](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

     Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

     Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

     A1

       the argument type of the fallback function

     B1

       the result type of the fallback function

     that

       the fallback function

     returns

       a partial function which has as domain the union of the domains of this partial function and `that`. The resulting partial function takes `x` to `this(x)` where `this` is defined, and to `that(x)` where it is not.

     Definition Classes
       PartialFunction

119. #### def orElseFast[A1 <: Int, B1 >: A](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

     Definition Classes
       PartialFunction

120. #### def padTo(len: Int, elem: A): Buffer[A]

     [use case]

     [use case]
     len

       the target length

     elem

       the padding value

     returns

       a new buffer consisting of all elements of this buffer followed by the minimal number of occurrences of `elem` so that the resulting buffer has a length of at least `len`.

     Definition Classes
       SeqLike → GenSeqLike

121. #### def par: ParSeq[A]

     Returns a parallel implementation of this collection.

     Returns a parallel implementation of this collection.

     For most collection types, this method creates a new parallel collection by copying all the elements. For these collection, `par` takes linear time. Mutable collections in this category do not produce a mutable parallel collection that has the same underlying dataset, so changes in one collection will not be reflected in the other one.

     Specific collections (e.g. `ParArray` or `mutable.ParHashMap`) override this default behaviour by creating a parallel collection which shares the same underlying dataset. For these collections, `par` takes constant or sublinear time.

     All parallel collections return a reference to themselves.

     returns

       a parallel implementation of this collection

     Definition Classes
       Parallelizable

122. #### def parCombiner: Combiner[A, ParSeq[A]]

     The default `par` implementation uses the combiner provided by this method to create a new parallel collection.

     The default `par` implementation uses the combiner provided by this method to create a new parallel collection.

     returns

       a combiner for the parallel collection of type `ParRepr`

     Attributes
       protected[this]
     Definition Classes
       SeqLike → SeqLike → TraversableLike → Parallelizable

123. #### def partition(p: (A) ⇒ Boolean): (Buffer[A], Buffer[A])

     Partitions this buffer in two buffers according to a predicate.

     Partitions this buffer in two buffers according to a predicate.

     p

       the predicate on which to partition.

     returns

       a pair of buffers: the first buffer consists of all elements that satisfy the predicate `p` and the second buffer consists of all elements that don't. The relative order of the elements in the resulting buffers is the same as in the original buffer.

     Definition Classes
       TraversableLike → GenTraversableLike

124. #### def patch(from: Int, that: GenSeq[A], replaced: Int): Buffer[A]

     [use case]

     [use case]
     from

       the index of the first replaced element

     replaced

       the number of elements to drop in the original buffer

     returns

       a new buffer consisting of all elements of this buffer except that `replaced` elements starting from `from` are replaced by `patch`.

     Definition Classes
       SeqLike → GenSeqLike

125. #### def permutations: Iterator[Buffer[A]]

     Iterates over distinct permutations.

     Iterates over distinct permutations.

     returns

       An Iterator which traverses the distinct permutations of this buffer.

     Definition Classes
       SeqLike
     Example:

     1. `"abb".permutations = Iterator(abb, bab, bba)`

126. #### def prefixLength(p: (A) ⇒ Boolean): Int

     Returns the length of the longest prefix whose elements all satisfy some predicate.

     Returns the length of the longest prefix whose elements all satisfy some predicate.

     p

       the predicate used to test elements.

     returns

       the length of the longest prefix of this buffer such that every element of the segment satisfies the predicate `p`.

     Definition Classes
       GenSeqLike

127. #### def prepend(elems: A*): Unit

     Prepends given elements to this buffer.

     Prepends given elements to this buffer.

     elems

       the elements to prepend.

     Definition Classes
       BufferLike

128. #### def prependAll(xs: TraversableOnce[A]): Unit

     Prepends the elements contained in a traversable object to this buffer.

     Prepends the elements contained in a traversable object to this buffer.

     xs

       the collection containing the elements to prepend.

     Definition Classes
       BufferLike

129. #### def product: A

     [use case]

     [use case]
     returns

       the product of all elements in this buffer of numbers of type `Int`. Instead of `Int`, any other type `T` with an implicit `Numeric[T]` implementation can be used as element type of the buffer and as result type of `product`. Examples of such types are: `Long`, `Float`, `Double`, `BigInt`.

     Definition Classes
       TraversableOnce → GenTraversableOnce

130. #### def readOnly: Seq[A]

     Provide a read-only view of this buffer as a sequence

     Provide a read-only view of this buffer as a sequence

     returns

       A sequence which refers to this buffer for all its operations.

     Definition Classes
       BufferLike

131. #### def reduce[A1 >: A](op: (A1, A1) ⇒ A1): A1

     Reduces the elements of this buffer using the specified associative binary operator.

     Reduces the elements of this buffer using the specified associative binary operator.

     The order in which operations are performed on elements is unspecified and may be nondeterministic.

     A1

       A type parameter for the binary operator, a supertype of `A`.

     op

       A binary operator that must be associative.

     returns

       The result of applying reduce operator `op` between all the elements if the buffer is nonempty.

     Definition Classes
       TraversableOnce → GenTraversableOnce
     Exceptions thrown
       UnsupportedOperationException

       if this buffer is empty.

132. #### def reduceLeft[B >: A](op: (B, A) ⇒ B): B

     Definition Classes
       TraversableOnce

133. #### def reduceLeftOption[B >: A](op: (B, A) ⇒ B): Option[B]

     Optionally applies a binary operator to all elements of this buffer, going left to right.

     Optionally applies a binary operator to all elements of this buffer, going left to right.

     B

       the result type of the binary operator.

     op

       the binary operator.

     returns

       an option value containing the result of `reduceLeft(op)` is this buffer is nonempty, `None` otherwise.

     Definition Classes
       TraversableOnce → GenTraversableOnce

134. #### def reduceOption[A1 >: A](op: (A1, A1) ⇒ A1): Option[A1]

     Reduces the elements of this buffer, if any, using the specified associative binary operator.

     Reduces the elements of this buffer, if any, using the specified associative binary operator.

     The order in which operations are performed on elements is unspecified and may be nondeterministic.

     A1

       A type parameter for the binary operator, a supertype of `A`.

     op

       A binary operator that must be associative.

     returns

       An option value containing result of applying reduce operator `op` between all the elements if the collection is nonempty, and `None` otherwise.

     Definition Classes
       TraversableOnce → GenTraversableOnce

135. #### def reduceRight[B >: A](op: (A, B) ⇒ B): B

     Applies a binary operator to all elements of this buffer, going right to left.

     Applies a binary operator to all elements of this buffer, going right to left.

     B

       the result type of the binary operator.

     op

       the binary operator.

     returns

       the result of inserting `op` between consecutive elements of this buffer, going right to left:

                       op(x,,1,,, op(x,,2,,, ..., op(x,,n-1,,, x,,n,,)...))

       where `x1, ..., xn` are the elements of this buffer.

     Definition Classes
       IterableLike → TraversableOnce → GenTraversableOnce
     Exceptions thrown
       `UnsupportedOperationException`

       if this buffer is empty.

136. #### def reduceRightOption[B >: A](op: (A, B) ⇒ B): Option[B]

     Optionally applies a binary operator to all elements of this buffer, going right to left.

     Optionally applies a binary operator to all elements of this buffer, going right to left.

     B

       the result type of the binary operator.

     op

       the binary operator.

     returns

       an option value containing the result of `reduceRight(op)` is this buffer is nonempty, `None` otherwise.

     Definition Classes
       TraversableOnce → GenTraversableOnce

137. #### def remove(n: Int, count: Int): Unit

     Removes a number of elements from a given index position.

     Removes a number of elements from a given index position.

     n

       the index which refers to the first element to remove.

     count

       the number of elements to remove.

     Definition Classes
       BufferLike
     Exceptions thrown
       IllegalArgumentException

       if `count < 0`.

       IndexOutOfBoundsException

       if the index `n` is not in the valid range `0 <= n <= length - count`.

138. #### def repr: Buffer[A]

     The collection of type buffer underlying this `TraversableLike` object.

     The collection of type buffer underlying this `TraversableLike` object. By default this is implemented as the `TraversableLike` object itself, but this can be overridden.

     Definition Classes
       TraversableLike → GenTraversableLike

139. #### def reverse: Buffer[A]

     Returns new buffer wih elements in reversed order.

     Returns new buffer wih elements in reversed order.

     returns

       A new buffer with all elements of this buffer in reversed order.

     Definition Classes
       SeqLike → GenSeqLike

140. #### def reverseIterator: Iterator[A]

     An iterator yielding elements in reversed order.

     An iterator yielding elements in reversed order.

     Note: `xs.reverseIterator` is the same as `xs.reverse.iterator` but might be more efficient.

     returns

       an iterator yielding the elements of this buffer in reversed order

     Definition Classes
       SeqLike

141. #### def reverseMap[B](f: (A) ⇒ B): Buffer[B]

     [use case] Note: `xs.reverseMap(f)` is the same as `xs.reverse.map(f)` but might be more efficient.

     [use case]

     Note: `xs.reverseMap(f)` is the same as `xs.reverse.map(f)` but might be more efficient.

     B

       the element type of the returned collection.

     f

       the function to apply to each element.

     returns

       a new buffer resulting from applying the given function `f` to each element of this buffer and collecting the results in reversed order.

     Definition Classes
       SeqLike → GenSeqLike

142. #### def reversed: List[A]

     Attributes
       protected[this]
     Definition Classes
       TraversableOnce

143. #### def sameElements(that: GenIterable[A]): Boolean

     [use case]

     [use case]
     that

       the collection to compare with.

     returns

       `true`, if both collections contain the same elements in the same order, `false` otherwise.

     Definition Classes
       IterableLike → GenIterableLike

144. #### def scan[B >: A, That](z: B)(op: (B, B) ⇒ B)(implicit cbf: CanBuildFrom[Buffer[A], B, That]): That

     Computes a prefix scan of the elements of the collection.

     Computes a prefix scan of the elements of the collection.

     Note: The neutral element `z` may be applied more than once.

     B

       element type of the resulting collection

     That

       type of the resulting collection

     z

       neutral element for the operator `op`

     op

       the associative operator for the scan

     cbf

       combiner factory which provides a combiner

     returns

       a new buffer containing the prefix scan of the elements in this buffer

     Definition Classes
       TraversableLike → GenTraversableLike

145. #### def scanLeft[B, That](z: B)(op: (B, A) ⇒ B)(implicit bf: CanBuildFrom[Buffer[A], B, That]): That

     Produces a collection containing cummulative results of applying the operator going left to right.

     Produces a collection containing cummulative results of applying the operator going left to right.

     B

       the type of the elements in the resulting collection

     That

       the actual type of the resulting collection

     z

       the initial value

     op

       the binary operator applied to the intermediate result and the element

     bf

       an implicit value of class `CanBuildFrom` which determines the result class `That` from the current representation type `Repr` and the new element type `B`.

     returns

       collection with intermediate results

     Definition Classes
       TraversableLike → GenTraversableLike

146. #### def scanRight[B, That](z: B)(op: (A, B) ⇒ B)(implicit bf: CanBuildFrom[Buffer[A], B, That]): That

     Produces a collection containing cummulative results of applying the operator going right to left.

     Produces a collection containing cummulative results of applying the operator going right to left. The head of the collection is the last cummulative result.

     Example:

            List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)

     B

       the type of the elements in the resulting collection

     That

       the actual type of the resulting collection

     z

       the initial value

     op

       the binary operator applied to the intermediate result and the element

     bf

       an implicit value of class `CanBuildFrom` which determines the result class `That` from the current representation type `Repr` and the new element type `B`.

     returns

       collection with intermediate results

     Definition Classes
       TraversableLike → GenTraversableLike
     Annotations
       @migration
     Migration

       (Changed in version 2.9.0) The behavior of `scanRight` has changed. The previous behavior can be reproduced with scanRight.reverse.

147. #### def segmentLength(p: (A) ⇒ Boolean, from: Int): Int

     Computes length of longest segment whose elements all satisfy some predicate.

     Computes length of longest segment whose elements all satisfy some predicate.

     p

       the predicate used to test elements.

     from

       the index where the search starts.

     returns

       the length of the longest segment of this buffer starting from index `from` such that every element of the segment satisfies the predicate `p`.

     Definition Classes
       SeqLike → GenSeqLike

148. #### def seq: Seq[A]

     A version of this collection with all of the operations implemented sequentially (i.

     A version of this collection with all of the operations implemented sequentially (i.e. in a single-threaded manner).

     This method returns a reference to this collection. In parallel collections, it is redefined to return a sequential implementation of this collection. In both cases, it has O(1) complexity.

     returns

       a sequential view of the collection.

     Definition Classes
       Seq → Seq → GenSeq → GenSeqLike → Iterable → Iterable → GenIterable → Traversable → Traversable → GenTraversable → Parallelizable → TraversableOnce → GenTraversableOnce

149. #### def size: Int

     The size of this buffer, equivalent to `length`.

     The size of this buffer, equivalent to `length`.

     returns

       the number of elements in this buffer.

     Definition Classes
       SeqLike → GenTraversableLike → TraversableOnce → GenTraversableOnce

150. #### def slice(from: Int, until: Int): Buffer[A]

     Selects an interval of elements.

     Selects an interval of elements. The returned collection is made up of all elements `x` which satisfy the invariant:

            from <= indexOf(x) < until

     from

       the lowest index to include from this buffer.

     until

       the highest index to EXCLUDE from this buffer.

     returns

       a buffer containing the elements greater than or equal to index `from` extending up to (but not including) index `until` of this buffer.

     Definition Classes
       IterableLike → TraversableLike → GenTraversableLike

151. #### def sliding(size: Int, step: Int): Iterator[Buffer[A]]

     Definition Classes
       IterableLike

152. #### def sliding(size: Int): Iterator[Buffer[A]]

     Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.

     Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

     size

       the number of elements per group

     returns

       An iterator producing buffers of size `size`, except the last and the only element will be truncated if there are fewer elements than size.

     Definition Classes
       IterableLike
     See also

       Iterator#sliding

153. #### def sortBy[B](f: (A) ⇒ B)(implicit ord: Ordering[B]): Buffer[A]

     Sorts this Buffer according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

     Sorts this Buffer according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

     B

       the target type of the transformation `f`, and the type where the ordering `ord` is defined.

     f

       the transformation function mapping elements to some other domain `B`.

     ord

       the ordering assumed on domain `B`.

     returns

       a buffer consisting of the elements of this buffer sorted according to the ordering where `x < y` if `ord.lt(f(x), f(y))`.

     Definition Classes
       SeqLike
     Example:

     1.        val words = "The quick brown fox jumped over the lazy dog".split(' ')
               // this works because scala.Ordering will implicitly provide an Ordering[Tuple2[Int, Char]]
               words.sortBy(x => (x.length, x.head))
               res0: Array[String] = Array(The, dog, fox, the, lazy, over, brown, quick, jumped)

     See also

       scala.math.Ordering

154. #### def sortWith(lt: (A, A) ⇒ Boolean): Buffer[A]

     Sorts this buffer according to a comparison function.

     Sorts this buffer according to a comparison function.

     The sort is stable. That is, elements that are equal wrt `lt` appear in the same order in the sorted sequence as in the original.

     lt

       the comparison function which tests whether its first argument precedes its second argument in the desired ordering.

     returns

       a buffer consisting of the elements of this buffer sorted according to the comparison function `lt`.

     Definition Classes
       SeqLike
     Example:

     1.        List("Steve", "Tom", "John", "Bob").sortWith(_.compareTo(_) < 0) =
               List("Bob", "John", "Steve", "Tom")

155. #### def sorted[B >: A](implicit ord: Ordering[B]): Buffer[A]

     Sorts this buffer according to an Ordering.

     Sorts this buffer according to an Ordering.

     The sort is stable. That is, elements that are equal wrt `lt` appear in the same order in the sorted sequence as in the original.

     ord

       the ordering to be used to compare elements.

     returns

       a buffer consisting of the elements of this buffer sorted according to the ordering `ord`.

     Definition Classes
       SeqLike
     See also

       scala.math.Ordering

156. #### def span(p: (A) ⇒ Boolean): (Buffer[A], Buffer[A])

     Splits this buffer into a prefix/suffix pair according to a predicate.

     Splits this buffer into a prefix/suffix pair according to a predicate.

     Note: `c span p` is equivalent to (but possibly more efficient than) `(c takeWhile p, c dropWhile p)`, provided the evaluation of the predicate `p` does not cause any side-effects.

     p

       the test predicate

     returns

       a pair consisting of the longest prefix of this buffer whose elements all satisfy `p`, and the rest of this buffer.

     Definition Classes
       TraversableLike → GenTraversableLike

157. #### def splitAt(n: Int): (Buffer[A], Buffer[A])

     Splits this buffer into two at a given position.

     Splits this buffer into two at a given position. Note: `c splitAt n` is equivalent to (but possibly more efficient than) `(c take n, c drop n)`.

     n

       the position at which to split.

     returns

       a pair of buffers consisting of the first `n` elements of this buffer, and the other elements.

     Definition Classes
       TraversableLike → GenTraversableLike

158. #### def startsWith[B](that: GenSeq[B], offset: Int): Boolean

     Tests whether this buffer contains the given sequence at a given index.

     Tests whether this buffer contains the given sequence at a given index.

     Note: If the both the receiver object `this` and the argument `that` are infinite sequences this method may not terminate.

     that

       the sequence to test

     offset

       the index where the sequence is searched.

     returns

       `true` if the sequence `that` is contained in this buffer at index `offset`, otherwise `false`.

     Definition Classes
       SeqLike → GenSeqLike

159. #### def startsWith[B](that: GenSeq[B]): Boolean

     Tests whether this buffer starts with the given sequence.

     Tests whether this buffer starts with the given sequence.

     that

       the sequence to test

     returns

       `true` if this collection has `that` as a prefix, `false` otherwise.

     Definition Classes
       GenSeqLike

160. #### def stringPrefix: String

     Defines the prefix of this object's `toString` representation.

     Defines the prefix of this object's `toString` representation.

     returns

       a string representation which starts the result of `toString` applied to this set. Unless overridden this is simply `"Buffer"`.

     Definition Classes
       BufferLike → TraversableLike → GenTraversableLike

161. #### def sum: A

     [use case]

     [use case]
     returns

       the sum of all elements in this buffer of numbers of type `Int`. Instead of `Int`, any other type `T` with an implicit `Numeric[T]` implementation can be used as element type of the buffer and as result type of `sum`. Examples of such types are: `Long`, `Float`, `Double`, `BigInt`.

     Definition Classes
       TraversableOnce → GenTraversableOnce

162. #### final def synchronized[T0](arg0: ⇒ T0): T0

     Definition Classes
       AnyRef

163. #### def tail: Buffer[A]

     Selects all elements except the first.

     Selects all elements except the first.

     returns

       a buffer consisting of all elements of this buffer except the first one.

     Definition Classes
       TraversableLike → GenTraversableLike
     Exceptions thrown
       `UnsupportedOperationException`

       if the buffer is empty.

164. #### def tails: Iterator[Buffer[A]]

     Iterates over the tails of this buffer.

     Iterates over the tails of this buffer. The first value will be this buffer and the final one will be an empty buffer, with the intervening values the results of successive applications of `tail`.

     returns

       an iterator over all the tails of this buffer

     Definition Classes
       TraversableLike
     Example:

     1. `List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)`

165. #### def take(n: Int): Buffer[A]

     Selects first n elements.

     Selects first n elements.

     n

       Tt number of elements to take from this buffer.

     returns

       a buffer consisting only of the first `n` elements of this buffer, or else the whole buffer, if it has less than `n` elements.

     Definition Classes
       IterableLike → TraversableLike → GenTraversableLike

166. #### def takeRight(n: Int): Buffer[A]

     Selects last n elements.

     Selects last n elements.

     n

       the number of elements to take

     returns

       a buffer consisting only of the last `n` elements of this buffer, or else the whole buffer, if it has less than `n` elements.

     Definition Classes
       IterableLike

167. #### def takeWhile(p: (A) ⇒ Boolean): Buffer[A]

     Takes longest prefix of elements that satisfy a predicate.

     Takes longest prefix of elements that satisfy a predicate.

     p

       The predicate used to test elements.

     returns

       the longest prefix of this buffer whose elements all satisfy the predicate `p`.

     Definition Classes
       IterableLike → TraversableLike → GenTraversableLike

168. #### def thisCollection: Seq[A]

     The underlying collection seen as an instance of `Buffer`.

     The underlying collection seen as an instance of `Buffer`. By default this is implemented as the current collection object itself, but this can be overridden.

     Attributes
       protected[this]
     Definition Classes
       SeqLike → IterableLike → TraversableLike

169. #### def toArray: Array[A]

     [use case]

     [use case]
     returns

       an array containing all elements of this buffer. A `ClassManifest` must be available for the element type of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

170. #### def toBuffer[B >: A]: Buffer[B]

     Converts this buffer to a mutable buffer.

     Converts this buffer to a mutable buffer.

     returns

       a buffer containing all elements of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

171. #### def toCollection(repr: Buffer[A]): Seq[A]

     A conversion from collections of type `Repr` to `Buffer` objects.

     A conversion from collections of type `Repr` to `Buffer` objects. By default this is implemented as just a cast, but this can be overridden.

     Attributes
       protected[this]
     Definition Classes
       SeqLike → IterableLike → TraversableLike

172. #### def toIndexedSeq: IndexedSeq[A]

     Converts this buffer to an indexed sequence.

     Converts this buffer to an indexed sequence.

     returns

       an indexed sequence containing all elements of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

173. #### def toIterable: Iterable[A]

     Converts this buffer to an iterable collection.

     Converts this buffer to an iterable collection. Note that the choice of target `Iterable` is lazy in this default implementation as this `TraversableOnce` may be lazy and unevaluated (i.e. it may be an iterator which is only traversable once).

     returns

       an `Iterable` containing all elements of this buffer.

     Definition Classes
       IterableLike → TraversableOnce → GenTraversableOnce

174. #### def toIterator: Iterator[A]

     Returns an Iterator over the elements in this buffer.

     Returns an Iterator over the elements in this buffer. Will return the same Iterator if this instance is already an Iterator.

     returns

       an Iterator containing all elements of this buffer.

     Definition Classes
       IterableLike → TraversableLike → GenTraversableOnce

175. #### def toList: List[A]

     Converts this buffer to a list.

     Converts this buffer to a list.

     returns

       a list containing all elements of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

176. #### def toMap[T, U]: Map[T, U]

     [use case]

     [use case]
     returns

       a map of type `immutable.Map[T, U]` containing all key/value pairs of type `(T, U)` of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

177. #### def toSeq: Seq[A]

     Converts this buffer to a sequence.

     Converts this buffer to a sequence.

     Overridden for efficiency.

     returns

       a sequence containing all elements of this buffer.

     Definition Classes
       SeqLike → GenSeqLike → TraversableOnce → GenTraversableOnce

178. #### def toSet[B >: A]: Set[B]

     Converts this buffer to a set.

     Converts this buffer to a set.

     returns

       a set containing all elements of this buffer.

     Definition Classes
       TraversableOnce → GenTraversableOnce

179. #### def toStream: Stream[A]

     Converts this buffer to a stream.

     Converts this buffer to a stream.

     returns

       a stream containing all elements of this buffer.

     Definition Classes
       IterableLike → TraversableLike → GenTraversableOnce

180. #### def toString(): String

     Converts this buffer to a string.

     Converts this buffer to a string.

     returns

       a string representation of this collection. By default this string consists of the `stringPrefix` of this buffer, followed by all elements separated by commas and enclosed in parentheses.

     Definition Classes
       SeqLike → TraversableLike → AnyRef → Any

181. #### def toTraversable: Traversable[A]

     Converts this buffer to an unspecified Traversable.

     Converts this buffer to an unspecified Traversable. Will return the same collection if this instance is already Traversable.

     returns

       a Traversable containing all elements of this buffer.

     Definition Classes
       TraversableLike → TraversableOnce → GenTraversableOnce

182. #### def transform(f: (A) ⇒ A): BufferWrapper.this.type

     Applies a transformation function to all values contained in this sequence.

     Applies a transformation function to all values contained in this sequence. The transformation function produces new values from existing elements.

     f

       the transformation to apply

     returns

       the sequence itself.

     Definition Classes
       SeqLike

183. #### def trimEnd(n: Int): Unit

     Removes the last n elements of this buffer.

     Removes the last n elements of this buffer.

     n

       the number of elements to remove from the end of this buffer.

     Definition Classes
       BufferLike

184. #### def trimStart(n: Int): Unit

     Removes the first n elements of this buffer.

     Removes the first n elements of this buffer.

     n

       the number of elements to remove from the beginning of this buffer.

     Definition Classes
       BufferLike

185. #### def union(that: Seq[A]): Buffer[A]

     [use case]

     [use case]
     that

       the sequence to add.

     returns

       a new buffer which contains all elements of this buffer followed by all elements of `that`.

     Definition Classes
       SeqLike → GenSeqLike

186. #### def unzip[A1, A2](implicit asPair: (A) ⇒ (A1, A2)): (Buffer[A1], Buffer[A2])

     Converts this buffer of pairs into two collections of the first and second half of each pair.

     Converts this buffer of pairs into two collections of the first and second half of each pair.

     asPair

       an implicit conversion which asserts that the element type of this buffer is a pair.

     returns

       a pair buffers, containing the first, respectively second half of each element pair of this buffer.

     Definition Classes
       GenericTraversableTemplate

187. #### def unzip3[A1, A2, A3](implicit asTriple: (A) ⇒ (A1, A2, A3)): (Buffer[A1], Buffer[A2], Buffer[A3])

     Converts this buffer of triples into three collections of the first, second, and third element of each triple.

     Converts this buffer of triples into three collections of the first, second, and third element of each triple.

     asTriple

       an implicit conversion which asserts that the element type of this buffer is a triple.

     returns

       a triple buffers, containing the first, second, respectively third member of each element triple of this buffer.

     Definition Classes
       GenericTraversableTemplate

188. #### def update(n: Int, a: A): Unit

     Replaces element at given index with a new value.

     Replaces element at given index with a new value.

     n

       the index of the element to replace.

     Definition Classes
       BufferWrapper → BufferLike → SeqLike
     Exceptions thrown
       IndexOutOfBoundsException

       if the index is not valid.

189. #### def updated(index: Int, elem: A): Buffer[A]

     [use case]

     [use case]
     index

       the position of the replacement

     elem

       the replacing element

     returns

       a copy of this buffer with the element at position `index` replaced by `elem`.

     Definition Classes
       SeqLike → GenSeqLike

190. #### def view(from: Int, until: Int): SeqView[A, Buffer[A]]

     Creates a non-strict view of a slice of this buffer.

     Creates a non-strict view of a slice of this buffer.

     Note: the difference between `view` and `slice` is that `view` produces a view of the current buffer, whereas `slice` produces a new buffer.

     Note: `view(from, to)` is equivalent to `view.slice(from, to)`

     from

       the index of the first element of the view

     until

       the index of the element following the view

     returns

       a non-strict view of a slice of this buffer, starting at index `from` and extending up to (but not including) index `until`.

     Definition Classes
       SeqLike → IterableLike → TraversableLike

191. #### def view: SeqView[A, Buffer[A]]

     Creates a non-strict view of this buffer.

     Creates a non-strict view of this buffer.

     returns

       a non-strict view of this buffer.

     Definition Classes
       SeqLike → IterableLike → TraversableLike

192. #### final def wait(): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws()

193. #### final def wait(arg0: Long, arg1: Int): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws()

194. #### final def wait(arg0: Long): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws()

195. #### def withFilter(p: (A) ⇒ Boolean): FilterMonadic[A, Buffer[A]]

     Creates a non-strict filter of this buffer.

     Creates a non-strict filter of this buffer.

     Note: the difference between `c filter p` and `c withFilter p` is that the former creates a new collection, whereas the latter only restricts the domain of subsequent `map`, `flatMap`, `foreach`, and `withFilter` operations.

     p

       the predicate used to test elements.

     returns

       an object of class `WithFilter`, which supports `map`, `flatMap`, `foreach`, and `withFilter` operations. All these operations apply to those elements of this buffer which satisfy the predicate `p`.

     Definition Classes
       TraversableLike → FilterMonadic

196. #### def zip[B](that: GenIterable[B]): Buffer[(A, B)]

     [use case]

     [use case]
     B

       the type of the second half of the returned pairs

     that

       The iterable providing the second half of each result pair

     returns

       a new buffer containing pairs consisting of corresponding elements of this buffer and `that`. The length of the returned collection is the minimum of the lengths of this buffer and `that`.

     Definition Classes
       IterableLike → GenIterableLike

197. #### def zipAll[B](that: Iterable[B], thisElem: A, thatElem: B): Buffer[(A, B)]

     [use case]

     [use case]
     B

       the type of the second half of the returned pairs

     that

       The iterable providing the second half of each result pair

     thisElem

       the element to be used to fill up the result if this buffer is shorter than `that`.

     thatElem

       the element to be used to fill up the result if `that` is shorter than this buffer.

     returns

       a new buffer containing pairs consisting of corresponding elements of this buffer and `that`. The length of the returned collection is the maximum of the lengths of this buffer and `that`. If this buffer is shorter than `that`, `thisElem` values are used to pad the result. If `that` is shorter than this buffer, `thatElem` values are used to pad the result.

     Definition Classes
       IterableLike → GenIterableLike

198. #### def zipWithIndex: Buffer[(A, Int)]

     [use case]

     [use case]
     returns

       A new buffer containing pairs consisting of all elements of this buffer paired with their index. Indices start at `0`. @example `List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))`

     Definition Classes
       IterableLike → GenIterableLike

### Inherited from Buffer[A]

### Inherited from BufferLike[A, Buffer[A]]

### Inherited from Subtractable[A, Buffer[A]]

### Inherited from Scriptable[A]

### Inherited from Shrinkable[A]

### Inherited from Growable[A]

### Inherited from Seq[A]

### Inherited from SeqLike[A, Buffer[A]]

### Inherited from Cloneable[Buffer[A]]

### Inherited from Seq[A]

### Inherited from SeqLike[A, Buffer[A]]

### Inherited from GenSeq[A]

### Inherited from GenSeqLike[A, Buffer[A]]

### Inherited from PartialFunction[Int, A]

### Inherited from (Int) ⇒ A

### Inherited from Iterable[A]

### Inherited from IterableLike[A, Buffer[A]]

### Inherited from Equals

### Inherited from GenIterable[A]

### Inherited from GenIterableLike[A, Buffer[A]]

### Inherited from Traversable[A]

### Inherited from Mutable

### Inherited from Traversable[A]

### Inherited from GenTraversable[A]

### Inherited from GenericTraversableTemplate[A, Buffer]

### Inherited from TraversableLike[A, Buffer[A]]

### Inherited from GenTraversableLike[A, Buffer[A]]

### Inherited from Parallelizable[A, ParSeq[A]]

### Inherited from TraversableOnce[A]

### Inherited from GenTraversableOnce[A]

### Inherited from FilterMonadic[A, Buffer[A]]

### Inherited from HasNewBuilder[A, Buffer[A]]

### Inherited from AnyRef

### Inherited from Any