Rexexp on part of a string
virtuallysue at gmail.com
Tue Feb 19 11:21:40 GMT 2008
Mike Whitaker wrote:
> On 19 Feb 2008, at 06:35, Andrew Black wrote:
>> I would like to restrict the part of a string a regexp is allowed to
>> operate on, For example I would like to ignore comments.
>> I would like
>> $x = " andrew andrew # andrew " ;
>> $x =~ s/andrew/black/g ;
>> to produce " black black # andrew "
> TMTOWDTI :)
> you could simply split() on #, s/andrew/black/g and rejoin
> or use a lookahead
If I split on # then what happens if $x contains 'print "==#andrew#andrew#===\n" # more andrew'?
Maybe the data would never look like that, but calling them comments and using the '#' to delineate
them makes you wonder.
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