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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2011, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.collection
package mutable
import generic._
/** The canonical builder for collections that are addable, i.e. that support an efficient `+` method
* which adds an element to the collection.
*
* Collections are built from their empty element using this `+` method.
* @param empty the empty element of the collection.
* @tparam Elem the type of elements that get added to the builder.
* @tparam To the type of the built collection.
*
* @note "efficient `+`" is not idle talk. Do not use this on mutable collections or any others
* for which `+` may perform an unshared copy! See GrowingBuilder comments for more.
*
* @author Martin Odersky
* @version 2.8
* @since 2.8
*/
@deprecated("Will be removed after scala 2.9", "2.8.0")
class AddingBuilder[Elem, To <: Addable[Elem, To] with collection.Iterable[Elem] with collection.IterableLike[Elem, To]](empty: To)
extends Builder[Elem, To] {
protected var elems: To = empty
def +=(x: Elem): this.type = { elems = elems + x; this }
def clear() { elems = empty }
def result: To = elems
}
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