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

in reply to How can one change the keys of a hash to an alternative set of keys?

See each to iterate thru key/value pairs of a hash.

Copy to new hash in loop with changed key.

update

To answer the tread title, you can't. Keys are immutable. They can be deleted or created but they can't be changed.

Cheers Rolf

PS: Je suis Charlie!

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

Replies are listed 'Best First'.
Re^2: How can one change the keys of a hash to an alternative set of keys? by choroba (Cardinal) on Feb 04, 2015 at 22:18 UTC
Read also Do not use each. لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply]
Re^3: How can one change the keys of a hash to an alternative set of keys? by LanX (Saint) on Feb 04, 2015 at 22:23 UTC
IIRC is each safe as long as you don't try to call any routines in the loop! Copying to a new hash is hardly a threat. Cheers Rolf PS: Je suis Charlie!	[reply]
Re^4: How can one change the keys of a hash to an alternative set of keys? by Anonymous Monk on Feb 04, 2015 at 23:32 UTC
IIRC is each safe as long as you don't try to call any routines in the loop!Copying to a new hash is hardly a threat. But TheDamian says, sometimes in the future, a more clueless maintainer is going to break it dangerously, so avoid it .... might as well avoid perl	[reply]
Re^5: How can one change the keys of a hash to an alternative set of keys? by LanX (Saint) on Feb 04, 2015 at 23:38 UTC

In Section Seekers of Perl Wisdom