Ruby 1.9.2 リファレンスマニュアル > ライブラリ一覧 > 組み込みライブラリ > Arrayクラス > select!

instance method Array#select!

select! {|item| block } -> self | nil

select! -> Enumerator

Invokes the block passing in successive elements from <i>array</i>, deleting elements for which the block returns a false value. but returns <code>nil</code> if no changes were made. Also see <code>Array#keep_if</code>

[SEE_ALSO] Array#keep_if