perlrecharclass - Perl 正規表現文字クラス - perldoc.jpThis manual page discusses the syntax and use of character classes in Perl Regular Expressions. A character class is a way of denoting a set of characters, in such a way that one character of the set is matched. It's important to remember that matching a character class consumes exactly one character in the source string. (The source string is the string the regular expression is matched against.)
