Re3: Perl Idioms Explained - keys %{{map{$_=>1}@list}}

[dragonchild]

in reply to Re^2: Perl Idioms Explained - keys %{{map{$_=>1}@list}}
in thread Perl Idioms Explained - keys %{{map{$_=>1}@list}}

Of course, if you're fiddling with objects which cannot be compared for equity by stringification, it is still broken.

Well, so is every uniquification based on the keys of a hash! The point still stands that grep is faster than the original idiom presented, by orders of magnitude, if still as memory-hungry.

------
We are the carpenters and bricklayers of the Information Age.

The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.

[Aristotle]

I didn't dispute that. :) I just pointed out some of the more subtle points to keep in mind here.

Makeshifts last the longest.