Bowen, Bruce am Sonntag, 12. Februar 2006 22.31: > I have a text string = "^0176 ^0176" > > I have set $a = "^0176 ^0176"; > I have set $b = "^0176 "; > > I'm using text =~ s/$a/$b/g; > > And the text string doesn't change. I expected it to come out as "^0176 " > after the substitution. What is wrong with my logic?
Not shure if it's clear now after Tom's and Michael's posts. Compared to the '\^'-solution, Tom's advice is generic (meaning that you have not to know which meta characters - there are more than the caret - are in $a and dont have to handle them explicitly). It's also more readable. So it's the preferred way to do it. perldoc perlre explains all in full detail. === #!/usr/bin/perl use strict; # don't forget use warnings; # those two my $a='^0176 ^0176'; # note the my $b='^0176 '; # single quotes my $text='some text ^0176 ^0176 here ^0176 ^0176 and there'; (my $temp=$text)=~s/\Q$a\E/$b/gs; print "a) $temp\n"; my $a1=quotemeta($a); (my $temp=$text)=~s/$a1/$b/gs; print "b) $temp\n"; === Hope $text does not contain votes ;-) hth, joe -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
