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Usage of avriables with special charachters in regexp

by ISAI student (Scribe)
on Oct 24, 2011 at 11:27 UTC ( #933360=perlquestion: print w/ replies, xml ) Need Help??
ISAI student has asked for the wisdom of the Perl Monks concerning the following question:

Hello all. The code below issues an error. How can I get it to work (check if variable $str has the chrachter value)? code is:

#!/usr/bin/perl -w #1 line checker #use strict; $m='('; print $m,"\n"; $str="Hello\(\n"; $true=($str=~m/$m/); print $true , "\n";
And the PERL engine error is:
liord@analog4 188 > ~/linecheck.pl ( Unmatched ( in regex; marked by <-- HERE in m/( <-- HERE / at /users/l +iord/linecheck.pl line 7. Exit 9

The following code works, but it is not parametric, and of no added value:

#!/usr/bin/perl -w #1 line checker #use strict; $m='('; print $m,"\n"; $str="Hello\(\n"; $true=($str=~m/\(/); print $true , "\n";

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Re: Usage of variables with special characters in regexp
by moritz (Cardinal) on Oct 24, 2011 at 11:40 UTC
      It works. Thanks!

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