Scalar::Util - A selection of general-utility scalar subroutines Scalar::Util - 一般的に有用なスカラサブルーチン集 概要¶ use Scalar::Util qw(blessed dualvar isweak readonly refaddr reftype tainted weaken isvstring looks_like_number set_prototype); # and other useful utils appearing below 説明¶ Scalar::Util contains a selection of subroutines that people have expressed would be nice to have in the perl core, but the us