Re: Using a hash with the @ sigil

It's so called "hash slice".

use warnings;
use strict;

use Data::Dumper;

my @arr = qw( a b c );
my %h;
@h{@arr} = (3, 4, 5);  # @hash{keys} = values
print Dumper(\%h);

__END__
Output:
$VAR1 = {
          'c' => 5,
          'b' => 4,
          'a' => 3
        };
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Comment on Re: Using a hash with the @ sigil Download Code

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Re^2: Using a hash with the @ sigil by 1nickt (Canon) on Jul 25, 2015 at 01:05 UTC
Thanks choroba and all the other monks who replied... The way forward always starts with a minimal test.	[reply] [d/l]
Re^2: Using a hash with the @ sigil by Anonymous Monk on Jul 25, 2015 at 14:25 UTC
Hash slices are useful, but assigning a scalar to them is less useful. Perl could warn in that case, but I don't know that it should. `@hash{@array} = 'foo'; # converted to a 1-element list @hash{@array} = ('foo'); # equivalent @hash{@array} = ('foo', undef, undef); # equivalent @hash{@array} = ('foo', 'foo', 'foo'); # arguably should be equivalent` [download]	[reply] [d/l]