scala.collection.mutable

# LazyBuilder

#### abstract class LazyBuilder[Elem, +To] extends Builder[Elem, To]

A builder that constructs its result lazily. Iterators or iterables to be added to this builder with `++=` are not evaluated until `result` is called.

Elem

  type of the elements for this builder.

To

  type of the collection this builder builds.

Source
  LazyBuilder.scala
Since

  2.8

Linear Supertypes
Builder[Elem, To], Growable[Elem], Clearable, AnyRef, Any
Known Subclasses
StreamBuilder
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Inherited

1. LazyBuilder
2. Builder
3. Growable
4. Clearable
5. AnyRef
6. Any

Implicitly

1. by any2stringadd
2. by any2stringfmt
3. by any2ArrowAssoc
4. by any2Ensuring

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### Instance Constructors

1. #### new LazyBuilder()

### Abstract Value Members

1. #### abstract def result(): To

   Produces a collection from the added elements.

   Produces a collection from the added elements. The builder's contents are undefined after this operation.

   returns

     a collection containing the elements added to this builder.

   Definition Classes
     LazyBuilder → Builder

### 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 +(other: String): String

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to StringAdd performed by method any2stringadd in scala.Predef.
   Definition Classes
     StringAdd

5. #### def ++=(xs: TraversableOnce[Elem]): LazyBuilder.this.type

   adds all elements produced by a TraversableOnce to this growable collection.

   adds all elements produced by a TraversableOnce to this growable collection.

   xs

     the TraversableOnce producing the elements to add.

   returns

     the growable collection itself.

   Definition Classes
     LazyBuilder → Growable

6. #### def +=(x: Elem): LazyBuilder.this.type

   Adds a single element to the builder.

   Adds a single element to the builder.

   returns

     the builder itself.

   Definition Classes
     LazyBuilder → Builder → Growable

7. #### def +=(elem1: Elem, elem2: Elem, elems: Elem*): LazyBuilder.this.type

   adds two or more elements to this growable collection.

   adds two or more elements to this growable collection.

   elem1

     the first element to add.

   elem2

     the second element to add.

   elems

     the remaining elements to add.

   returns

     the growable collection itself

   Definition Classes
     Growable

8. #### def ->[B](y: B): (LazyBuilder[Elem, To], B)

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to ArrowAssoc[LazyBuilder[Elem, To]] performed by method any2ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()

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

   Definition Classes
     AnyRef

10. #### 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

11. #### 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`.

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

    Clears the contents of this builder.

    Clears the contents of this builder. After execution of this method the builder will contain no elements.

    Definition Classes
      LazyBuilder → Builder → Growable → Clearable

13. #### def clone(): AnyRef

    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.

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

      not specified by SLS as a member of AnyRef

14. #### def ensuring(cond: (LazyBuilder[Elem, To]) ⇒ Boolean, msg: ⇒ Any): LazyBuilder[Elem, To]

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
      Ensuring

15. #### def ensuring(cond: (LazyBuilder[Elem, To]) ⇒ Boolean): LazyBuilder[Elem, To]

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
      Ensuring

16. #### def ensuring(cond: Boolean, msg: ⇒ Any): LazyBuilder[Elem, To]

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
      Ensuring

17. #### def ensuring(cond: Boolean): LazyBuilder[Elem, To]

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
      Ensuring

18. #### 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

19. #### def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to `eq`.

    See also `equals` in scala.Any.

    returns

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

    Definition Classes
      AnyRef → Any

20. #### 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[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws()
    Note

      not specified by SLS as a member of AnyRef

21. #### def formatted(fmtstr: String): String

    Returns string formatted according to given `format` string.

    Returns string formatted according to given `format` string. Format strings are as for `String.format` (@see java.lang.String.format).

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

22. #### 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

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

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

      the hash code value for this object.

    Definition Classes
      AnyRef → Any

24. #### 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

25. #### def mapResult[NewTo](f: (To) ⇒ NewTo): Builder[Elem, NewTo]

    Creates a new builder by applying a transformation function to the results of this builder.

    Creates a new builder by applying a transformation function to the results of this builder.

    NewTo

      the type of collection returned by `f`.

    f

      the transformation function.

    returns

      a new builder which is the same as the current builder except that a transformation function is applied to this builder's result.

    Definition Classes
      Builder

26. #### 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

27. #### 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

28. #### 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

29. #### var parts: ListBuffer[TraversableOnce[Elem]]

    The different segments of elements to be added to the builder, represented as iterators

    The different segments of elements to be added to the builder, represented as iterators

    Attributes
      protected

30. #### def sizeHint(coll: TraversableLike[_, _], delta: Int): Unit

    Gives a hint that one expects the `result` of this builder to have the same size as the given collection, plus some delta.

    Gives a hint that one expects the `result` of this builder to have the same size as the given collection, plus some delta. This will provide a hint only if the collection is known to have a cheap `size` method. Currently this is assumed to be the case if and only if the collection is of type `IndexedSeqLike`. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    coll

      the collection which serves as a hint for the result's size.

    delta

      a correction to add to the `coll.size` to produce the size hint.

    Definition Classes
      Builder

31. #### def sizeHint(coll: TraversableLike[_, _]): Unit

    Gives a hint that one expects the `result` of this builder to have the same size as the given collection, plus some delta.

    Gives a hint that one expects the `result` of this builder to have the same size as the given collection, plus some delta. This will provide a hint only if the collection is known to have a cheap `size` method. Currently this is assumed to be the case if and only if the collection is of type `IndexedSeqLike`. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    coll

      the collection which serves as a hint for the result's size.

    Definition Classes
      Builder

32. #### def sizeHint(size: Int): Unit

    Gives a hint how many elements are expected to be added when the next `result` is called.

    Gives a hint how many elements are expected to be added when the next `result` is called. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

      the hint how many elements will be added.

    Definition Classes
      Builder

33. #### def sizeHintBounded(size: Int, boundingColl: TraversableLike[_, _]): Unit

    Gives a hint how many elements are expected to be added when the next `result` is called, together with an upper bound given by the size of some other collection.

    Gives a hint how many elements are expected to be added when the next `result` is called, together with an upper bound given by the size of some other collection. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

      the hint how many elements will be added.

    boundingColl

      the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.

    Definition Classes
      Builder

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

    Definition Classes
      AnyRef

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

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

      a String representation of the object.

    Definition Classes
      AnyRef → Any

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

    Definition Classes
      AnyRef
    Annotations
      @throws()

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

    Definition Classes
      AnyRef
    Annotations
      @throws()

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

    Definition Classes
      AnyRef
    Annotations
      @throws()

39. #### def →[B](y: B): (LazyBuilder[Elem, To], B)

    Implicit information
      This member is added by an implicit conversion from LazyBuilder[Elem, To] to ArrowAssoc[LazyBuilder[Elem, To]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Shadowed Implict Value Members

1. #### val self: Any

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to StringAdd performed by method any2stringadd in scala.Predef.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (lazyBuilder: StringAdd).self

   Definition Classes
     StringAdd

2. #### val self: Any

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to StringFormat performed by method any2stringfmt in scala.Predef.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (lazyBuilder: StringFormat).self

   Definition Classes
     StringFormat

### Deprecated Value Members

1. #### def x: LazyBuilder[Elem, To]

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to ArrowAssoc[LazyBuilder[Elem, To]] performed by method any2ArrowAssoc in scala.Predef.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (lazyBuilder: ArrowAssoc[LazyBuilder[Elem, To]]).x

   Definition Classes
     ArrowAssoc
   Annotations
     @deprecated
   Deprecated

     (Since version 2.10.0) Use `leftOfArrow`instead``

2. #### def x: LazyBuilder[Elem, To]

   Implicit information
     This member is added by an implicit conversion from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]] performed by method any2Ensuring in scala.Predef.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (lazyBuilder: Ensuring[LazyBuilder[Elem, To]]).x

   Definition Classes
     Ensuring
   Annotations
     @deprecated
   Deprecated

     (Since version 2.10.0) Use `resultOfEnsuring`instead``

### Inherited from Builder[Elem, To]

### Inherited from Growable[Elem]

### Inherited from Clearable

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from LazyBuilder[Elem, To] to StringAdd

### Inherited by implicit conversion any2stringfmt from LazyBuilder[Elem, To] to StringFormat

### Inherited by implicit conversion any2ArrowAssoc from LazyBuilder[Elem, To] to ArrowAssoc[LazyBuilder[Elem, To]]

### Inherited by implicit conversion any2Ensuring from LazyBuilder[Elem, To] to Ensuring[LazyBuilder[Elem, To]]

### Ungrouped