scala
trait Collection

[source: `scala/Collection.scala`]

`` `trait` Collection[+A]
  `extends` Iterable[A]

  Variant of `Iterable` used to describe collections with a finite number of elements. Basically, this trait just adds size and toString to Iterable, as most of the methods in Iterable already assume finite-ness.

Author
  Sean McDirmid

Direct Known Subclasses:
  CollectionProxy, Seq, Map, Set, MutableIterable, History, MetaData

Method Summary
`abstract def` | size : Int Returns the number of elements in this collection.
`protected def` | stringPrefix : String Defines the prefix of this object's `toString` representation.
`def` | toArray [B >: A] : Array[B] Converts this iterable to a fresh Array with elements.
`override def` | toString : String

Methods inherited from Iterable
elements (abstract), concat, ++, map, flatMap, filter, takeWhile, dropWhile, take, drop, foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, toList, mkString, mkString, addString, addString, copyToArray, isEmpty, projection, hasDefiniteSize

Methods inherited from AnyRef
getClass, hashCode, equals, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized

Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf

Method Details

`abstract` `def` size : Int

  Returns the number of elements in this collection.

Returns
  number of collection elements.

@deprecated
`` `def` toArray[B >: A] : Array[B]

  Converts this iterable to a fresh Array with elements.

Deprecated
  This method is broken for BitSet. BitSet.toArray will be updated to new behavior in a future release.

`override` `def` toString : String

`protected` `def` stringPrefix : String

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