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Re: reg. expr. multiple substitutions

by dulwar (Monk)
on May 17, 2012 at 16:53 UTC ( [id://971117]=note: print w/replies, xml ) Need Help??


in reply to reg. expr. multiple substitutions

Use a hash:

my %subs = ( tag1 => 'subst1', tag2 => 'subst2', ... ); my $pattern = join('|', keys %subs); $str =~ s/($pattern)/$subs{$1}/g;

It would be a good idea to simplify $pattern if there is some common pattern to the tags.

By the way, you need to use the g modifier to replace all occurrences of each tag if it can occur more than once in the string, also if you are substituting each tag separately.

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