/* * call-seq: * dvector.reject! {|x| block } -> dvector or nil * * Equivalent to <code>Dvector#delete_if</code>, deleting elements from * _dvector_ for which the block evaluates to true, but returns * <code>nil</code> if no changes were made. Also see * <code>Enumerable#reject</code>. */ VALUE dvector_reject_bang(VALUE ary) {