I agree with Dave that line 6 has a problem, the solution being to put the 512_x64 in single quotes like you did for the hash definition. This code works fine: 
#!/usr/bin/perl

use warnings;
use strict;

my %h = ( '512_x64' => '24', 'world' => 'hello');

print $h{world}, "\n";   # line 5
print $h{'512_x64'}, "\n"; # line 6

[download]
So you can use a key that starts with a digit!
HTH,
SSF

In reply to Re: Hash keys not DWIMming by sflitman
in thread Hash keys not DWIMming by syphilis

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