Regular expression examples: Difference between revisions

Revision as of 20:06, 31 January 2007

Revision as of 13:25, 31 March 2007

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</pre><B>'''Output:</B>'''<pre>

99 is the first number in '99 bottles of beer on the wall.'

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The 'm' in the above regular expressions, for example m/[^abc]/, is not required in order for perl to recognize the expression as a 'match' (cf. 'substitute': s/a/b/); /[^abc]/ could just as easily be used without the preceding 'm'. The 'm' operator can be used to alter the delimiting character; for example, m{/} may be used to enhance the legibility of patterns such as /\//. See '[http://perldoc.perl.org/perlre.html perldoc perlre]' for more details.

[[Category:Perl]]

[[Category:Pattern matching]]

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