Character Class « Regular Expression « Perl

1.Character Class: Alternative Characters
2.Character Class: Anchored Characters
3.Character Class: Miscellaneous Characters
4.Character Class: Remembered Characters
5.Character Class: Repeated Characters
6.Character Class: Whitespace Characters
7.Match any number of alphanumerics followed by a single space character
8.Match at least one alphanumeric followed by a single space character
9.Posix and Unicode Classes

10.The bracket metacharacters and negation
11.The bracketed character class