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Re^2: Why does 'keys' need a named hash?

by vrk (Chaplain)
on May 22, 2017 at 08:45 UTC ( #1190845=note: print w/replies, xml ) Need Help??


in reply to Re: Why does 'keys' need a named hash?
in thread Why does ‘keys’ need a named hash?

I just noticed there are functions for this in List::Util: pairkeys and pairvalues. For example:

use v5.14; use List::Util qw(pairkeys pairvalues); my @a = qw(a b c d e f); say "keys = ", join ", ", pairkeys @a; say "values = ", join ", ", pairvalues @a; my %h = @a; say "keys = ", join ", ", keys %h; say "values = ", join ", ", values %h;

The obvious difference to keys and values of a hash is that pairkeys doesn't remove duplicates and it keeps the original array order.

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