Re: How can one change the keys of a hash to an alternative set of keys?

$input_hash_ref->{alt_key1} = $input_hash_ref->{key1};
delete $input_hash_ref->{key1};
$input_hash_ref->{alt_key2} = $input_hash_ref->{key2};
delete $input_hash_ref->{key2};
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Re^2: How can one change the keys of a hash to an alternative set of keys? by LanX (Saint) on Feb 04, 2015 at 22:20 UTC
No that's too dangerous! If old and new key set overlap you'll get ugly bugs. Defensive programming!!! Cheers Rolf PS: Je suis Charlie!	[reply]
Re^3: How can one change the keys of a hash to an alternative set of keys? by tkguifan (Scribe) on Feb 05, 2015 at 05:36 UTC
This is a special case, because for some reason the two set of keys are guaranteed to uniquely identify the data structures behind them ( they are alternative descriptions of the same data ). They are constructed in such a way, that there can be no overlap ( in fact this takes quite a bit of effort, but ultimately it is done in a foolproof way ). It depends on the circumstances which set of keys is more convenient to access the data elements.	[reply]
Re^3: How can one change the keys of a hash to an alternative set of keys? by pme (Monsignor) on Feb 05, 2015 at 07:47 UTC
This is true in general. But here I gave a specific comment on a specific question.	[reply]