Re^3: can I change hash keys or values directly


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Re^3: can I change hash keys or values directly

by choroba (Cardinal)

on Jan 29, 2021 at 22:44 UTC ( [id://11127664]=note: print w/replies, xml )

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in reply to Re^2: can I change hash keys or values directly
in thread can I change hash keys or values directly

> perhaps keys also worked that way

No, it means you can write

#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

use Syntax::Construct qw{ keys-array };  # More explicit than 5.012.

my @array = qw( abc def );

my @keys = keys @array;      # 0, 1
my @values = values @array;  # abc, def
while (my ($index, $value) = each @array) {
    say "$index $value";     # 0 abc, 1 def
}
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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]