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Re: Uer Perl Variable in file

by choroba (Abbot)
on Aug 06, 2012 at 13:57 UTC ( #985726=note: print w/ replies, xml ) Need Help??


in reply to Uer Perl Variable in txt file

Using a hash instead of variables is safer (no eval needed). Something like this:

#!/usr/bin/perl use warnings; use strict; my %replace = (name => 'Joe', fun => 'a game'); while (<DATA>) { for my $key (keys %replace) { s/\$$key/$replace{$key}/g; } print; } __DATA__ Hullo $name, are you ready for $fun?
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ


Comment on Re: Uer Perl Variable in file
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Re^2: Uer Perl Variable in file
by moritz (Cardinal) on Aug 06, 2012 at 13:59 UTC
      my $search_for = join '|', map quotemeta, keys %replace; ... s/\$($search_for)/$replace{$1}/g;
      Additionally:
      when doing things like this and you have two hash keys "foo" and "foobar", either use \b in the regex if possible, or sort the hash keys for length before joining. otherwise $foobar could be replaced with the value of $replace{foo}.
      s/\$($search_for)\b/$replace{$1}/g;

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