You can just stick a 'sort' in front of your keys and it will do what you want (with that naming convention). Well, you'll want to numeric sort (so you don't get 1, 10, 11 ..., 2, 20 kinds of sorting.) 
foreach $key (sort {$a <=> $b} keys %presentations) {

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In reply to Re: Help creating a data structure by kirbyk
in thread Help creating a data structure by neilwatson

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