diff options
Diffstat (limited to 'src/library/scalax/collection/generic/Addable.scala')
-rwxr-xr-x | src/library/scalax/collection/generic/Addable.scala | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/library/scalax/collection/generic/Addable.scala b/src/library/scalax/collection/generic/Addable.scala new file mode 100755 index 0000000000..40a4f60e6e --- /dev/null +++ b/src/library/scalax/collection/generic/Addable.scala @@ -0,0 +1,64 @@ +/* __ *\ +** ________ ___ / / ___ Scala API ** +** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL ** +** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** +** /____/\___/_/ |_/____/_/ | | ** +** |/ ** +\* */ + +// $Id: Iterable.scala 15188 2008-05-24 15:01:02Z stepancheg $ + +package scalax.collection.generic + +/** This class represents collections that can be augmented using a += operator. + * + * @autor Martin Odersky + * @owner Martin Odersky + * @version 2.8 + */ +trait Addable[+C <: Addable[C, A], A] { + + protected def thisCC: C + + /** Adds a single element to this collection and returns + * either the collection itself (if it is mutable), or a new collection + * with the added element. + * + * @param elem the element to add. + */ + def +(elem: A): C + + /** Adds two or more elements to this collection and returns + * either the collection itself (if it is mutable), or a new collection + * with the added elements. + * + * @param elem1 the first element to add. + * @param elem2 the second element to add. + * @param elems the remaining elements to add. + */ + def +(elem1: A, elem2: A, elems: A*): C = + thisCC + elem1 + elem2 ++ elems.asInstanceOf[Iterable[A]] // !@! + + /** Adds a number of elements provided by an iterable object + * via its <code>elements</code> method and returns + * either the collection itself (if it is mutable), or a new collection + * with the added elements. + * + * @param iter the iterable object. + */ + def ++(iter: Iterable[A]): C = (thisCC /: iter) (_ + _) + + /** Adds a number of elements provided by an iterator + * via its <code>elements</code> method and returns + * either the collection itself (if it is mutable), or a new collection + * with the added elements. + * + * @param iter the iterator + */ + def ++(iter: Iterator[A]): C = (thisCC /: iter) (_ + _) + +} + + + + |