scala.xml

Null

object Null extends MetaData with Product with Serializable

Essentially, every method in here is a dummy, returning Zero[T]. It provides a backstop for the unusual collection defined by MetaData, sort of a linked list of tails.

Source
Null.scala
Version

1.0

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Inherited
  1. Null
  2. Product
  3. MetaData
  4. Serializable
  5. Serializable
  6. Equality
  7. AbstractIterable
  8. Iterable
  9. IterableLike
  10. Equals
  11. GenIterable
  12. GenIterableLike
  13. AbstractTraversable
  14. Traversable
  15. GenTraversable
  16. GenericTraversableTemplate
  17. TraversableLike
  18. GenTraversableLike
  19. Parallelizable
  20. TraversableOnce
  21. GenTraversableOnce
  22. FilterMonadic
  23. HasNewBuilder
  24. AnyRef
  25. Any
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Type Members

  1. type Self = collection.Iterable[MetaData]

    The type implementing this traversable

    The type implementing this traversable

    Attributes
    protected[this]
    Definition Classes
    TraversableLike
  2. class WithFilter extends FilterMonadic[A, Repr]

    A class supporting filtered operations.

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 ++[B](that: GenTraversableOnce[B]): collection.Iterable[B]

    [use case] Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand.

    [use case]

    Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the iterable collection is the most specific superclass encompassing the element types of the two operands.

    Example:

    scala> val a = LinkedList(1)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1)
    
    scala> val b = LinkedList(2)
    b: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val c = a ++ b
    c: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    
    scala> val d = LinkedList('a')
    d: scala.collection.mutable.LinkedList[Char] = LinkedList(a)
    
    scala> val e = c ++ d
    e: scala.collection.mutable.LinkedList[AnyVal] = LinkedList(1, 2, a)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new iterable collection which contains all elements of this iterable collection followed by all elements of that.

    Definition Classes
    TraversableLikeGenTraversableLike
    Full Signature

    def ++[B >: MetaData, That](that: GenTraversableOnce[B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

  5. def ++:[B >: MetaData, That](that: collection.Traversable[B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], 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 and the new element type B.

    returns

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

    Definition Classes
    TraversableLike
  6. def ++:[B](that: collection.TraversableOnce[B]): collection.Iterable[B]

    [use case] As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    [use case]

    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)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new iterable collection which contains all elements of this iterable collection followed by all elements of that.

    Definition Classes
    TraversableLike
    Full Signature

    def ++:[B >: MetaData, That](that: collection.TraversableOnce[B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

  7. def /:[B](z: B)(op: (B, MetaData) ⇒ B): B

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

    Applies a binary operator to a start value and all elements of this iterable collection, 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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 iterable collection, going left to right with the start value z on the left:

    op(...op(op(z, x_1), x_2), ..., x_n)

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  8. def :\[B](z: B)(op: (MetaData, B) ⇒ B): B

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

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 iterable collection, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  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. def addString(b: StringBuilder): StringBuilder

    Appends all elements of this iterable collection to a string builder.

    Appends all elements of this iterable collection to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this iterable collection 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
  12. def addString(b: StringBuilder, sep: String): StringBuilder

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

    Appends all elements of this iterable collection 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 iterable collection, 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
  13. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

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

    Appends all elements of this iterable collection 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 iterable collection 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
  14. def aggregate[B](z: B)(seqop: (B, MetaData) ⇒ 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
    TraversableOnceGenTraversableOnce
  15. def append(m: MetaData, scope: NamespaceBinding = TopScope): MetaData

    Updates this MetaData with the MetaData given as argument.

    Updates this MetaData with the MetaData given as argument. All attributes that occur in updates are part of the resulting MetaData. If an attribute occurs in both this instance and updates, only the one in updates is part of the result (avoiding duplicates). For prefixed attributes, namespaces are resolved using the given scope, which defaults to TopScope.

    returns

    a new MetaData instance that contains old, new and updated attributes

    Definition Classes
    NullMetaData
  16. def apply(key: String): Seq[Node]

    Gets value of unqualified (unprefixed) attribute with given key, null if not found

    Gets value of unqualified (unprefixed) attribute with given key, null if not found

    key
    returns

    value as Seq[Node] if key is found, null otherwise

    Definition Classes
    NullMetaData
  17. def apply(namespace: String, scope: NamespaceBinding, key: String): scala.Null

    Gets value of prefixed attribute with given key and namespace, null if not found

    Gets value of prefixed attribute with given key and namespace, null if not found

    returns

    value as Seq[Node] if key is found, null otherwise

    Definition Classes
    NullMetaData
  18. final def apply(namespace_uri: String, owner: Node, key: String): Seq[Node]

    convenience method, same as apply(namespace, owner.scope, key).

    convenience method, same as apply(namespace, owner.scope, key).

    namespace_uri

    namespace uri of key

    owner

    the element owning this attribute list

    key

    the attribute key

    Definition Classes
    MetaData
  19. def asAttrMap: Map[String, String]

    Returns a Map containing the attributes stored as key/value pairs.

    Returns a Map containing the attributes stored as key/value pairs.

    Definition Classes
    MetaData
  20. 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.

  21. def basisForHashCode: Seq[Any]

    Attributes
    protected
    Definition Classes
    NullMetaDataEquality
  22. def buildString(sb: StringBuilder): StringBuilder

    Definition Classes
    NullMetaData
  23. def canEqual(other: Any): Boolean

    We insist we're only equal to other xml.Equality implementors, which heads off a lot of inconsistency up front.

    We insist we're only equal to other xml.Equality implementors, which heads off a lot of inconsistency up front.

    returns

    true if this instance can possibly equal that, otherwise false

    Definition Classes
    MetaDataEqualityIterableLikeEquals
  24. 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

  25. def collect[B](pf: PartialFunction[A, B]): collection.Iterable[B]

    [use case] Builds a new collection by applying a partial function to all elements of this iterable collection on which the function is defined.

    [use case]

    Builds a new collection by applying a partial function to all elements of this iterable collection on which the function is defined.

    B

    the element type of the returned collection.

    pf

    the partial function which filters and maps the iterable collection.

    returns

    a new iterable collection 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
    TraversableLikeGenTraversableLike
    Full Signature

    def collect[B, That](pf: PartialFunction[MetaData, B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

  26. def collectFirst[B](pf: PartialFunction[MetaData, B]): Option[B]

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

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

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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)

  27. def companion: GenericCompanion[collection.Iterable]

    The factory companion object that builds instances of class Iterable.

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

    Definition Classes
    IterableGenIterableTraversableGenTraversableGenericTraversableTemplate
  28. def copy(next: MetaData): MetaData

    returns a copy of this MetaData item with next field set to argument.

    returns a copy of this MetaData item with next field set to argument.

    Definition Classes
    NullMetaData
  29. def copyToArray(xs: Array[A], start: Int, len: Int): Unit

    [use case] Copies elements of this iterable collection to an array.

    [use case]

    Copies elements of this iterable collection to an array. Fills the given array xs with at most len elements of this iterable collection, starting at position start. Copying will stop once either the end of the current iterable collection is reached, or the end of the array is reached, or len elements have been copied.

    Note: will not terminate for infinite-sized collections.

    xs

    the array to fill.

    start

    the starting index.

    len

    the maximal number of elements to copy.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: MetaData](xs: Array[B], start: Int, len: Int): Unit

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

    [use case] Copies values of this iterable collection to an array.

    [use case]

    Copies values of this iterable collection to an array. Fills the given array xs with values of this iterable collection. Copying will stop once either the end of the current iterable collection is reached, or the end of the array is reached.

    Note: will not terminate for infinite-sized collections.

    xs

    the array to fill.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: MetaData](xs: Array[B]): Unit

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

    [use case] Copies values of this iterable collection to an array.

    [use case]

    Copies values of this iterable collection to an array. Fills the given array xs with values of this iterable collection, beginning at index start. Copying will stop once either the end of the current iterable collection is reached, or the end of the array is reached.

    Note: will not terminate for infinite-sized collections.

    xs

    the array to fill.

    start

    the starting index.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: MetaData](xs: Array[B], start: Int): Unit

  32. def copyToBuffer[B >: MetaData](dest: Buffer[B]): Unit

    Copies all elements of this iterable collection to a buffer.

    Copies all elements of this iterable collection to a buffer.

    Note: will not terminate for infinite-sized collections.

    dest

    The buffer to which elements are copied.

    Definition Classes
    TraversableOnce
  33. def count(p: (MetaData) ⇒ Boolean): Int

    Counts the number of elements in the iterable collection which satisfy a predicate.

    Counts the number of elements in the iterable collection which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    TraversableOnceGenTraversableOnce
  34. def drop(n: Int): collection.Iterable[MetaData]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this iterable collection.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  35. def dropRight(n: Int): collection.Iterable[MetaData]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    The number of elements to take

    returns

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

    Definition Classes
    IterableLike
  36. def dropWhile(p: (MetaData) ⇒ Boolean): collection.Iterable[MetaData]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the longest suffix of this iterable collection whose first element does not satisfy the predicate p.

    Definition Classes
    TraversableLikeGenTraversableLike
  37. 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
  38. def equals(other: Any): Boolean

    The universal equality method defined in AnyRef.

    The universal equality method defined in AnyRef.

    returns

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

    Definition Classes
    EqualityEquals → AnyRef → Any
  39. def exists(p: (MetaData) ⇒ Boolean): Boolean

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

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

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  40. def filter(f: (MetaData) ⇒ Boolean): MetaData

    filters this sequence of meta data

    filters this sequence of meta data

    returns

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

    Definition Classes
    NullMetaDataTraversableLikeGenTraversableLike
  41. def filterNot(p: (MetaData) ⇒ Boolean): collection.Iterable[MetaData]

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

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

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    TraversableLikeGenTraversableLike
  42. 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( classOf[java.lang.Throwable] )
    Note

    not specified by SLS as a member of AnyRef

  43. def find(p: (MetaData) ⇒ Boolean): Option[MetaData]

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

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

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  44. def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): collection.Iterable[B]

    [use case] Builds a new collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

    [use case]

    Builds a new collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

    For example:

    def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

    The type of the resulting collection is guided by the static type of iterable collection. This might cause unexpected results sometimes. For example:

    // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
    def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)
    
    // lettersOf will return a Set[Char], not a Seq
    def lettersOf(words: Seq[String]) = words.toSet flatMap (word => word.toSeq)
    
    // xs will be a an Iterable[Int]
    val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)
    
    // ys will be a Map[Int, Int]
    val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)
    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

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

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def flatMap[B, That](f: (MetaData) ⇒ GenTraversableOnce[B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

  45. def flatten[B]: collection.Iterable[B]

    [use case] Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.

    [use case]

    Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.

    The resulting collection's type will be guided by the static type of iterable collection. For example:

    val xs = List(Set(1, 2, 3), Set(1, 2, 3))
    // xs == List(1, 2, 3, 1, 2, 3)
    
    val ys = Set(List(1, 2, 3), List(3, 2, 1))
    // ys == Set(1, 2, 3)
    B

    the type of the elements of each traversable collection.

    returns

    a new iterable collection resulting from concatenating all element iterable collections.

    Definition Classes
    GenericTraversableTemplate
    Full Signature

    def flatten[B](implicit asTraversable: (MetaData) ⇒ GenTraversableOnce[B]): collection.Iterable[B]

  46. def fold[A1 >: MetaData](z: A1)(op: (A1, A1) ⇒ A1): A1

    Folds the elements of this iterable collection using the specified associative binary operator.

    Folds the elements of this iterable collection 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
    TraversableOnceGenTraversableOnce
  47. def foldLeft[B](z: B)(op: (B, MetaData) ⇒ B): B

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 iterable collection, going left to right with the start value z on the left:

    op(...op(z, x_1), x_2, ..., x_n)

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  48. def foldRight[B](z: B)(op: (MetaData, B) ⇒ B): B

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 iterable collection, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
  49. def forall(p: (MetaData) ⇒ Boolean): Boolean

    Tests whether a predicate holds for all elements of this iterable collection.

    Tests whether a predicate holds for all elements of this iterable collection.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  50. def foreach(f: (MetaData) ⇒ Unit): Unit

    [use case] Applies a function f to all elements of this iterable collection.

    [use case]

    Applies a function f to all elements of this iterable collection.

    Note: this method underlies the implementation of most other bulk operations. Subclasses should re-implement this method if a more efficient implementation exists.

    f

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

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLikeTraversableOnceGenTraversableOnceFilterMonadic
    Full Signature

    def foreach[U](f: (MetaData) ⇒ U): Unit

  51. def genericBuilder[B]: Builder[B, collection.Iterable[B]]

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

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

    Definition Classes
    GenericTraversableTemplate
  52. final def get(uri: String, scope: NamespaceBinding, key: String): Option[Seq[Node]]

    gets value of qualified (prefixed) attribute with given key.

    gets value of qualified (prefixed) attribute with given key.

    uri

    namespace of key

    scope

    a namespace scp (usually of the element owning this attribute list)

    key

    to be looked fore

    returns

    value as Some[Seq[Node]] if key is found, None otherwise

    Definition Classes
    MetaData
  53. final def get(uri: String, owner: Node, key: String): Option[Seq[Node]]

    same as get(uri, owner.

    same as get(uri, owner.scope, key)

    Definition Classes
    MetaData
  54. final def get(key: String): Option[Seq[Node]]

    Gets value of unqualified (unprefixed) attribute with given key, None if not found

    Gets value of unqualified (unprefixed) attribute with given key, None if not found

    key
    returns

    value in Some(Seq[Node]) if key is found, None otherwise

    Definition Classes
    MetaData
  55. 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

  56. def getNamespace(owner: Node): scala.Null

    if owner is the element of this metadata item, returns namespace

    if owner is the element of this metadata item, returns namespace

    Definition Classes
    NullMetaData
  57. def groupBy[K](f: (MetaData) ⇒ K): Map[K, collection.Iterable[MetaData]]

    Partitions this iterable collection into a map of iterable collections according to some discriminator function.

    Partitions this iterable collection into a map of iterable collections 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 iterable collection.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to iterable collections 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 iterable collection of those elements x for which f(x) equals k.

    Definition Classes
    TraversableLikeGenTraversableLike
  58. def grouped(size: Int): collection.Iterator[collection.Iterable[MetaData]]

    Partitions elements in fixed size iterable collections.

    Partitions elements in fixed size iterable collections.

    size

    the number of elements per group

    returns

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

    Definition Classes
    IterableLike
    See also

    scala.collection.Iterator, method grouped

  59. def hasDefiniteSize: Boolean

    Tests whether this iterable collection is known to have a finite size.

    Tests whether this iterable collection 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
    TraversableLikeTraversableOnceGenTraversableOnce
  60. def hasNext: Boolean

    Definition Classes
    NullMetaData
  61. def hashCode(): Int

    It's be nice to make these final, but there are probably people out there subclassing the XML types, especially when it comes to equals.

    It's be nice to make these final, but there are probably people out there subclassing the XML types, especially when it comes to equals. However WE at least can pretend they are final since clearly individual classes cannot be trusted to maintain a semblance of order.

    returns

    the hash code value for this object.

    Definition Classes
    Equality → AnyRef → Any
  62. def head: MetaData

    Selects the first element of this iterable collection.

    Selects the first element of this iterable collection.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this iterable collection.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
    Exceptions thrown
    `NoSuchElementException`

    if the iterable collection is empty.

  63. def headOption: Option[MetaData]

    Optionally selects the first element.

    Optionally selects the first element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this iterable collection if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  64. def init: collection.Iterable[MetaData]

    Selects all elements except the last.

    Selects all elements except the last.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    a iterable collection consisting of all elements of this iterable collection except the last one.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    `UnsupportedOperationException`

    if the iterable collection is empty.

  65. def inits: collection.Iterator[collection.Iterable[MetaData]]

    Iterates over the inits of this iterable collection.

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

    returns

    an iterator over all the inits of this iterable collection

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  66. def isEmpty: Boolean

    Tests whether this iterable collection is empty.

    Tests whether this iterable collection is empty.

    returns

    true if the iterable collection contain no elements, false otherwise.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  67. 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
  68. def isPrefixed: Boolean

    Definition Classes
    NullMetaData
  69. final def isTraversableAgain: Boolean

    Tests whether this iterable collection can be repeatedly traversed.

    Tests whether this iterable collection can be repeatedly traversed.

    returns

    true

    Definition Classes
    TraversableLikeGenTraversableLikeGenTraversableOnce
  70. def iterator: collection.Iterator[Nothing]

    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
    NullIterableLikeGenIterableLike
  71. def key: scala.Null

    returns key of this MetaData item

    returns key of this MetaData item

    Definition Classes
    NullMetaData
  72. def last: MetaData

    Selects the last element.

    Selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    The last element of this iterable collection.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    NoSuchElementException

    If the iterable collection is empty.

  73. def lastOption: Option[MetaData]

    Optionally selects the last element.

    Optionally selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the last element of this iterable collection$ if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  74. def length(i: Int): Int

    Definition Classes
    NullMetaData
  75. def length: Int

    Definition Classes
    NullMetaData
  76. def map[B](f: (A) ⇒ B): collection.Iterable[B]

    [use case] Builds a new collection by applying a function to all elements of this iterable collection.

    [use case]

    Builds a new collection by applying a function to all elements of this iterable collection.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

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

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def map[B, That](f: (MetaData) ⇒ B)(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

  77. def max: A

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

    the largest element of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def max[B >: MetaData](implicit cmp: Ordering[B]): MetaData

  78. def maxBy[B](f: (MetaData) ⇒ B)(implicit cmp: Ordering[B]): MetaData

    Definition Classes
    TraversableOnceGenTraversableOnce
  79. def min: A

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

    the smallest element of this iterable collection

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def min[B >: MetaData](implicit cmp: Ordering[B]): MetaData

  80. def minBy[B](f: (MetaData) ⇒ B)(implicit cmp: Ordering[B]): MetaData

    Definition Classes
    TraversableOnceGenTraversableOnce
  81. def mkString: String

    Displays all elements of this iterable collection in a string.

    Displays all elements of this iterable collection in a string.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
  82. def mkString(sep: String): String

    Displays all elements of this iterable collection in a string using a separator string.

    Displays all elements of this iterable collection in a string using a separator string.

    sep

    the separator string.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  83. def mkString(start: String, sep: String, end: String): String

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

    Displays all elements of this iterable collection 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 iterable collection. 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 iterable collection are separated by the string sep.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  84. 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
  85. def newBuilder: Builder[MetaData, collection.Iterable[MetaData]]

    The builder that builds instances of type Iterable[A]

    The builder that builds instances of type Iterable[A]

    Attributes
    protected[this]
    Definition Classes
    GenericTraversableTemplateHasNewBuilder
  86. def next: scala.Null

    returns Null or the next MetaData item

    returns Null or the next MetaData item

    Definition Classes
    NullMetaData
  87. def nonEmpty: Boolean

    Tests whether the iterable collection is not empty.

    Tests whether the iterable collection is not empty.

    returns

    true if the iterable collection contains at least one element, false otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  88. 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

  89. 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

  90. def par: ParIterable[MetaData]

    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
  91. def parCombiner: Combiner[MetaData, ParIterable[MetaData]]

    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
    TraversableLikeParallelizable
  92. def partition(p: (MetaData) ⇒ Boolean): (collection.Iterable[MetaData], collection.Iterable[MetaData])

    Partitions this iterable collection in two iterable collections according to a predicate.

    Partitions this iterable collection in two iterable collections according to a predicate.

    p

    the predicate on which to partition.

    returns

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

    Definition Classes
    TraversableLikeGenTraversableLike
  93. def prefixedKey: String

    Returns a String containing "prefix:key" if the first key is prefixed, and "key" otherwise.

    Returns a String containing "prefix:key" if the first key is prefixed, and "key" otherwise.

    Definition Classes
    MetaData
  94. def product: A

    [use case] Multiplies up the elements of this collection.

    [use case]

    Multiplies up the elements of this collection.

    returns

    the product of all elements in this iterable collection 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 iterable collection and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def product[B >: MetaData](implicit num: Numeric[B]): B

  95. def reduce[A1 >: MetaData](op: (A1, A1) ⇒ A1): A1

    Reduces the elements of this iterable collection using the specified associative binary operator.

    Reduces the elements of this iterable collection 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 iterable collection is nonempty.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Exceptions thrown
    UnsupportedOperationException

    if this iterable collection is empty.

  96. def reduceLeft[B >: MetaData](op: (B, MetaData) ⇒ B): B

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this iterable collection, going left to right:

    op( op( ... op(x_1, x_2) ..., x_{n-1}), x_n)

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    TraversableOnce
    Exceptions thrown
    `UnsupportedOperationException`

    if this iterable collection is empty.

  97. def reduceLeftOption[B >: MetaData](op: (B, MetaData) ⇒ B): Option[B]

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
  98. def reduceOption[A1 >: MetaData](op: (A1, A1) ⇒ A1): Option[A1]

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

    Reduces the elements of this iterable collection, 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
    TraversableOnceGenTraversableOnce
  99. def reduceRight[B >: MetaData](op: (MetaData, B) ⇒ B): B

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this iterable collection, going right to left:

    op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))

    where x1, ..., xn are the elements of this iterable collection.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
    Exceptions thrown
    `UnsupportedOperationException`

    if this iterable collection is empty.

  100. def reduceRightOption[B >: MetaData](op: (MetaData, B) ⇒ B): Option[B]

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
  101. def remove(namespace: String, scope: NamespaceBinding, key: String): Null.type

    Definition Classes
    NullMetaData
  102. def remove(key: String): Null.type

    Definition Classes
    NullMetaData
  103. final def remove(namespace: String, owner: Node, key: String): MetaData

    Definition Classes
    MetaData
  104. def repr: collection.Iterable[MetaData]

    The collection of type iterable collection underlying this TraversableLike object.

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

    Definition Classes
    TraversableLikeGenTraversableLike
  105. def reversed: List[MetaData]

    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  106. def sameElements(that: GenIterable[A]): Boolean

    [use case] Checks if the other iterable collection contains the same elements in the same order as this iterable collection.

    [use case]

    Checks if the other iterable collection contains the same elements in the same order as this iterable collection.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: will not terminate for infinite-sized collections.

    that

    the collection to compare with.

    returns

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

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def sameElements[B >: MetaData](that: GenIterable[B]): Boolean

  107. def scan[B >: MetaData, That](z: B)(op: (B, B) ⇒ B)(implicit cbf: CanBuildFrom[collection.Iterable[MetaData], 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 iterable collection containing the prefix scan of the elements in this iterable collection

    Definition Classes
    TraversableLikeGenTraversableLike
  108. def scanLeft[B, That](z: B)(op: (B, MetaData) ⇒ B)(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 and the new element type B.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
  109. def scanRight[B, That](z: B)(op: (MetaData, B) ⇒ B)(implicit bf: CanBuildFrom[collection.Iterable[MetaData], B, That]): That

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

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

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 and the new element type B.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
    Annotations
    @migration
    Migration

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

  110. def seq: collection.Iterable[MetaData]

    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
    IterableGenIterableTraversableGenTraversableParallelizableTraversableOnceGenTraversableOnce
  111. def size: Int

    The size of this iterable collection.

    The size of this iterable collection.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this iterable collection.

    Definition Classes
    NullGenTraversableLikeTraversableOnceGenTraversableOnce
  112. def slice(from: Int, until: Int): collection.Iterable[MetaData]

    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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  113. def sliding(size: Int, step: Int): collection.Iterator[collection.Iterable[MetaData]]

    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

    step

    the distance between the first elements of successive groups (defaults to 1)

    returns

    An iterator producing iterable collections 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

    scala.collection.Iterator, method sliding

  114. def sliding(size: Int): collection.Iterator[collection.Iterable[MetaData]]

    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 iterable collections 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

    scala.collection.Iterator, method sliding

  115. def span(p: (MetaData) ⇒ Boolean): (collection.Iterable[MetaData], collection.Iterable[MetaData])

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

    Splits this iterable collection 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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

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

    Definition Classes
    TraversableLikeGenTraversableLike
  116. def splitAt(n: Int): (collection.Iterable[MetaData], collection.Iterable[MetaData])

    Splits this iterable collection into two at a given position.

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the position at which to split.

    returns

    a pair of iterable collections consisting of the first n elements of this iterable collection, and the other elements.

    Definition Classes
    TraversableLikeGenTraversableLike
  117. def strict_!=(other: Equality): Boolean

    Definition Classes
    Equality
  118. def strict_==(other: Equality): Boolean

    Definition Classes
    NullMetaDataEquality
  119. 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 iterable collection. By default the string prefix is the simple name of the collection class iterable collection.

    Definition Classes
    TraversableLikeGenTraversableLike
  120. def sum: A

    [use case] Sums up the elements of this collection.

    [use case]

    Sums up the elements of this collection.

    returns

    the sum of all elements in this iterable collection 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 iterable collection and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def sum[B >: MetaData](implicit num: Numeric[B]): B

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

    Definition Classes
    AnyRef
  122. def tail: collection.Iterable[MetaData]

    Selects all elements except the first.

    Selects all elements except the first.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    a iterable collection consisting of all elements of this iterable collection except the first one.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    `UnsupportedOperationException`

    if the iterable collection is empty.

  123. def tails: collection.Iterator[collection.Iterable[MetaData]]

    Iterates over the tails of this iterable collection.

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

    returns

    an iterator over all the tails of this iterable collection

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  124. def take(n: Int): collection.Iterable[MetaData]

    Selects first n elements.

    Selects first n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take from this iterable collection.

    returns

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

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  125. def takeRight(n: Int): collection.Iterable[MetaData]

    Selects last n elements.

    Selects last n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take

    returns

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

    Definition Classes
    IterableLike
  126. def takeWhile(p: (MetaData) ⇒ Boolean): collection.Iterable[MetaData]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the longest prefix of this iterable collection whose elements all satisfy the predicate p.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  127. def thisCollection: collection.Iterable[MetaData]

    The underlying collection seen as an instance of Iterable.

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

    Attributes
    protected[this]
    Definition Classes
    IterableLikeTraversableLike
  128. def to[Col[_]]: Col[A]

    [use case] Converts this iterable collection into another by copying all elements.

    [use case]

    Converts this iterable collection into another by copying all elements.

    Note: will not terminate for infinite-sized collections.

    Col

    The collection type to build.

    returns

    a new collection containing all elements of this iterable collection.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
    Full Signature

    def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, MetaData, Col[MetaData]]): Col[MetaData]

  129. def toArray: Array[A]

    [use case] Converts this iterable collection to an array.

    [use case]

    Converts this iterable collection to an array.

    Note: will not terminate for infinite-sized collections.

    returns

    an array containing all elements of this iterable collection. An ClassTag must be available for the element type of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toArray[B >: MetaData](implicit arg0: ClassTag[B]): Array[B]

  130. def toBuffer[B >: MetaData]: Buffer[B]

    Converts this iterable collection to a mutable buffer.

    Converts this iterable collection to a mutable buffer.

    Note: will not terminate for infinite-sized collections.

    returns

    a buffer containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  131. def toCollection(repr: collection.Iterable[MetaData]): collection.Iterable[MetaData]

    A conversion from collections of type Repr to Iterable objects.

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

    Attributes
    protected[this]
    Definition Classes
    IterableLikeTraversableLike
  132. def toIndexedSeq: collection.immutable.IndexedSeq[MetaData]

    Converts this iterable collection to an indexed sequence.

    Converts this iterable collection to an indexed sequence.

    Note: will not terminate for infinite-sized collections.

    returns

    an indexed sequence containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  133. def toIterable: collection.Iterable[MetaData]

    Converts this iterable collection to an iterable collection.

    Converts this iterable collection 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).

    Note: will not terminate for infinite-sized collections.

    returns

    an Iterable containing all elements of this iterable collection.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
  134. def toIterator: collection.Iterator[MetaData]

    Returns an Iterator over the elements in this iterable collection.

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

    Note: will not terminate for infinite-sized collections.

    returns

    an Iterator containing all elements of this iterable collection.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  135. def toList: List[MetaData]

    Converts this iterable collection to a list.

    Converts this iterable collection to a list.

    Note: will not terminate for infinite-sized collections.

    returns

    a list containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  136. def toMap[T, U]: Map[T, U]

    [use case] Converts this iterable collection to a map.

    [use case]

    Converts this iterable collection to a map. This method is unavailable unless the elements are members of Tuple2, each ((T, U)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.

    Note: will not terminate for infinite-sized collections.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toMap[T, U](implicit ev: <:<[MetaData, (T, U)]): Map[T, U]

  137. def toSeq: collection.Seq[MetaData]

    Converts this iterable collection to a sequence.

    Converts this iterable collection to a sequence. As with toIterable, it's lazy in this default implementation, as this TraversableOnce may be lazy and unevaluated.

    Note: will not terminate for infinite-sized collections.

    returns

    a sequence containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  138. def toSet[B >: MetaData]: Set[B]

    Converts this iterable collection to a set.

    Converts this iterable collection to a set.

    Note: will not terminate for infinite-sized collections.

    returns

    a set containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  139. def toStream: collection.immutable.Stream[MetaData]

    Converts this iterable collection to a stream.

    Converts this iterable collection to a stream.

    Note: will not terminate for infinite-sized collections.

    returns

    a stream containing all elements of this iterable collection.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  140. def toString(): String

    Converts this iterable collection to a string.

    Converts this iterable collection to a string.

    returns

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

    Definition Classes
    NullMetaDataTraversableLike → AnyRef → Any
  141. def toString1(): String

    Attributes
    protected
    Definition Classes
    NullMetaData
  142. def toString1(sb: StringBuilder): Unit

    Attributes
    protected
    Definition Classes
    NullMetaData
  143. def toTraversable: collection.Traversable[MetaData]

    Converts this iterable collection to an unspecified Traversable.

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

    Note: will not terminate for infinite-sized collections.

    returns

    a Traversable containing all elements of this iterable collection.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
  144. def toVector: Vector[MetaData]

    Converts this iterable collection to a Vector.

    Converts this iterable collection to a Vector.

    Note: will not terminate for infinite-sized collections.

    returns

    a vector containing all elements of this iterable collection.

    Definition Classes
    TraversableOnceGenTraversableOnce
  145. def transpose[B](implicit asTraversable: (MetaData) ⇒ GenTraversableOnce[B]): collection.Iterable[collection.Iterable[B]]

    Transposes this iterable collection of traversable collections into a iterable collection of iterable collections.

    Transposes this iterable collection of traversable collections into a iterable collection of iterable collections.

    B

    the type of the elements of each traversable collection.

    asTraversable

    an implicit conversion which asserts that the element type of this iterable collection is a Traversable.

    returns

    a two-dimensional iterable collection of iterable collections which has as nth row the nth column of this iterable collection.

    Definition Classes
    GenericTraversableTemplate
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.

    Exceptions thrown
    `IllegalArgumentException`

    if all collections in this iterable collection are not of the same size.

  146. def unzip[A1, A2](implicit asPair: (MetaData) ⇒ (A1, A2)): (collection.Iterable[A1], collection.Iterable[A2])

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

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

    A1

    the type of the first half of the element pairs

    A2

    the type of the second half of the element pairs

    asPair

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

    returns

    a pair iterable collections, containing the first, respectively second half of each element pair of this iterable collection.

    Definition Classes
    GenericTraversableTemplate
  147. def unzip3[A1, A2, A3](implicit asTriple: (MetaData) ⇒ (A1, A2, A3)): (collection.Iterable[A1], collection.Iterable[A2], collection.Iterable[A3])

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

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

    A1

    the type of the first member of the element triples

    A2

    the type of the second member of the element triples

    A3

    the type of the third member of the element triples

    asTriple

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

    returns

    a triple iterable collections, containing the first, second, respectively third member of each element triple of this iterable collection.

    Definition Classes
    GenericTraversableTemplate
  148. def value: scala.Null

    returns value of this MetaData item

    returns value of this MetaData item

    Definition Classes
    NullMetaData
  149. def view(from: Int, until: Int): IterableView[MetaData, collection.Iterable[MetaData]]

    Creates a non-strict view of a slice of this iterable collection.

    Creates a non-strict view of a slice of this iterable collection.

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 iterable collection, starting at index from and extending up to (but not including) index until.

    Definition Classes
    IterableLikeTraversableLike
  150. def view: IterableView[MetaData, collection.Iterable[MetaData]]

    Creates a non-strict view of this iterable collection.

    Creates a non-strict view of this iterable collection.

    returns

    a non-strict view of this iterable collection.

    Definition Classes
    IterableLikeTraversableLike
  151. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  152. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  153. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  154. def wellformed(scope: NamespaceBinding): Boolean

    Definition Classes
    NullMetaData
  155. def withFilter(p: (MetaData) ⇒ Boolean): FilterMonadic[MetaData, collection.Iterable[MetaData]]

    Creates a non-strict filter of this iterable collection.

    Creates a non-strict filter of this iterable collection.

    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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 iterable collection which satisfy the predicate p.

    Definition Classes
    TraversableLikeFilterMonadic
  156. final def xml_!=(other: Any): Boolean

    Definition Classes
    Equality
  157. final def xml_==(other: Any): Boolean

    Definition Classes
    Equality
  158. def zip[B](that: GenIterable[B]): collection.Iterable[(A, B)]

    [use case] Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 iterable collection containing pairs consisting of corresponding elements of this iterable collection and that. The length of the returned collection is the minimum of the lengths of this iterable collection and that.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zip[A1 >: MetaData, B, That](that: GenIterable[B])(implicit bf: CanBuildFrom[collection.Iterable[MetaData], (A1, B), That]): That

  159. def zipAll[B](that: collection.Iterable[B], thisElem: A, thatElem: B): collection.Iterable[(A, B)]

    [use case] Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 iterable collection is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this iterable collection.

    returns

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

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipAll[B, A1 >: MetaData, That](that: GenIterable[B], thisElem: A1, thatElem: B)(implicit bf: CanBuildFrom[collection.Iterable[MetaData], (A1, B), That]): That

  160. def zipWithIndex: collection.Iterable[(A, Int)]

    [use case] Zips this iterable collection with its indices.

    [use case]

    Zips this iterable collection with its indices.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    A new iterable collection containing pairs consisting of all elements of this iterable collection paired with their index. Indices start at 0.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipWithIndex[A1 >: MetaData, That](implicit bf: CanBuildFrom[collection.Iterable[MetaData], (A1, Int), That]): That

    Example:
    1. List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))

Deprecated Value Members

  1. def /:\[A1 >: MetaData](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
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) use fold instead

Inherited from Product

Inherited from MetaData

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from Equality

Inherited from AbstractIterable[MetaData]

Inherited from collection.Iterable[MetaData]

Inherited from Equals

Inherited from GenIterable[MetaData]

Inherited from AbstractTraversable[MetaData]

Inherited from GenTraversable[MetaData]

Inherited from GenTraversableOnce[MetaData]

Inherited from HasNewBuilder[MetaData, Iterable[scala.xml.MetaData] @scala.annotation.unchecked.uncheckedVariance]

Inherited from AnyRef

Inherited from Any

Ungrouped