Well, first of all you can't really sort a hash. A hash is always unsorted. Also, you're sorting the hash keys and values together, which is probably not what you want. If you want to process the hash values in a sorted order, do this: 
foreach $value (sort by_date values %H) {
  # ...
}

[download]

If you need the keys, sorted by their corresponding values: 

foreach $key (sort { by_date($H{$a},$H{$b}) } keys %H) {

}

[download]
If it still doesn't work, try showing some of the input and expected output of your code.

By the way, code can be much easier formatted using <code> tags.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: sorting a hash by its values, date by Joost
in thread sorting a hash by its values, date by levbao

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