I'm trying to build a hash of possible substitutes for a given word or regex. So, I came up with this. 
#!/usr/bin/perl

use strict;

my $test = 'The brown fox int(10) over float(200) fence.';

my %dict = ( 'brown'      => 'yellow',
             /int(\d+)/   => 'int',
             /float(\d+)/ => 'float',
           );

for my $i (keys %dict) {
    $test =~ s/($i)/$dict{$i}/gi;
}

print "$test\n";

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This is the output. 
The yellow fox float(10) over float(200) fence.

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My expected output is something like this. 
The yellow fox int over float fence.

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So, I'm not sure if I can put regex in the keys of my hash and use that to check for possible substitutes. Also, why did int(10) become float(10) in the output??

In reply to Hash of Regex by bichonfrise74

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