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If you can then ditch the unsortable date format. Otherwise just transform the date before the sort and use the ISO format internally. Using non ISO compliant dates in computer software is inherently evil so doing this will be a net improvement (IMO) to your code. The sooner these regional date formats go the way of the steam engine the better. Something like the following regex should do it:


With this representation used internally you can use lexicographical sorting on the keys of the hash. Ie:

my @sorted=sort keys %hash;

Alhough even here you are introducing year 10000 incompatibilities. If that worries you then you should use some other technique like the Swartzian Transform. Me, I tend to think that if they are still using my code 7000 years from now they deserve what they get.


In reply to Re: Sorting Dates by demerphq
in thread Sorting Dates by josephjohn

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