$PREMATCH -> String | nil[permalink][rdoc][edit] [added by English]-
$` の別名
require "English" str = 'hoge,foo,bar,hee,hoo' /foo/ =~ str p $PREMATCH #=> "hoge,"
$PREMATCH -> String | nil[permalink][rdoc][edit] [added by English]
$` の別名
require "English" str = 'hoge,foo,bar,hee,hoo' /foo/ =~ str p $PREMATCH #=> "hoge,"