|Perl Language Reference Manual|
by Larry Wall and others
Paperback (6"x9"), 724 pages
RRP £29.95 ($39.95)
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13 perlrecharclass: Perl Regular Expression Character Classes
The top level documentation about Perl regular expressions is found in 11.
This chapter 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.)
There are three types of character classes in Perl regular expressions: the dot, backslashed sequences, and the form enclosed in square brackets. Keep in mind, though, that often the term "character class" is used to mean just the bracketed form. This is true in other Perl documentation.
|ISBN 9781906966027||Perl Language Reference Manual||See the print edition|