I'd be inclined to use a lookup for the text to be replaced then use a regex driven substitution to do the heavy lifting:

#!/usr/bin/perl
use strict;
use warnings;

my %edits = (foo => 'bar', bar => 'foo');
my $value = 'This string is all barfoo, but a little Perl should swap 
+the foos and bars';
my $match = '(' . join ('|', keys %edits) . ')';

$value =~ s/$match/$edits{$1}/g;

print $value;

[download]

Prints:

This string is all foobar, but a little Perl should swap the bars and 
+foos

[download]
True laziness is hard work

In reply to Re: Swap foo and bar in text? by GrandFather
in thread Swap foo and bar in text? by Cody Fendant

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