RegExp - settle a bet Post: 302186490

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Top Forums UNIX for Dummies Questions & Answers RegExp - settle a bet Post 302186490 by gkalangi on Thursday 17th of April 2008 10:53:29 AM

04-17-2008

Registered User

Quote:

Originally Posted by earnstaf

A couple co-workers have a disagreement. Can you guys please settle this?

One co-worker says regular expressions can inherently search and replace. His argument is that he can do a s/ regexp / replace in perl (and many other languages).

The other says that by definition regular expressions is just pattern matching and that is an outside function doing the replacing.

Thoughts?

Regular Expressions are just patterns...They do not perform any functions...It is the commands like sed or tr that we use along with the regular expression performs the functions like substitute/translate the pattern matched.

Its just my thought!

gkalangi

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LEARN ABOUT MOJAVE

ppi::token::regexp::match

PPI::Token::Regexp::Match(3)				User Contributed Perl Documentation			      PPI::Token::Regexp::Match(3)

NAME

       PPI::Token::Regexp::Match - A standard pattern match regex

INHERITANCE

	 PPI::Token::Regexp::Match
	 isa PPI::Token::Regexp
	     isa PPI::Token
		 isa PPI::Element

SYNOPSIS

	 $text =~ m/match regexp/;
	 $text =~ /match regexp/;

DESCRIPTION

       A "PPI::Token::Regexp::Match" object represents a single match regular expression. Just to be doubly clear, here are things that are and
       aren't considered a match regexp.

	 # Is a match regexp
	 /This is a match regexp/;
	 m/Old McDonald had a farm/eieio;

	 # These are NOT match regexp
	 qr/This is a regexp quote-like operator/;
	 s/This is a/replace regexp/;

METHODS

       There are no methods available for "PPI::Token::Regexp::Match" beyond those provided by the parent PPI::Token::Regexp, PPI::Token and
       PPI::Element classes.

       Got any ideas for methods? Submit a report to rt.cpan.org!

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.18.2							    2011-02-25					      PPI::Token::Regexp::Match(3)