Regular expression metacharacters : Pattern matching « Regular Expression « Perl






  1. Perl
  2. Regular Expression
  3. Pattern matching

Regular expression metacharacters

    

METACHARACTER     PURPOSE


\                 accept as a regular character; 

~                 Matches the beginning of the string, unless /m is used to modify the expression.

.                 Matches any character except a new-line character, unless /s is used to modify the expression.

$                 Matches the end of the string, unless /m is used to modify the expression.

|                 Expresses alternation. 

( )               Groups expressions to assist in alternation and back referencing.

[ ]               Looks for a set of characters.








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