use strict;
use warnings;
my %h = ('a', ['A', 'B'], 'b', 'B','a b', 'A B');
print join('-', keys %h) . "\n\n";
print join('-', values %h) . "\n\n";
print "@{$h{'a'}}\n\n";
print "$_ => $h{$_}\n" for keys %h;
print "\n";
use Data::Dumper;
print Dumper(\%h);
Output:
a-a b-b
ARRAY(0x1801180)-A B-B
A B
a => ARRAY(0x1801180)
a b => A B
b => B
$VAR1 = {
'a' => [
'A',
'B'
],
'a b' => 'A B',
'b' => 'B'
};
Note that hashes do not retain order, so the elements may display in a different order from the order you defined them.
Personally, I prefer this format if I'm creating a hash, just makes things a lot more clear:
my %h = ( 'a' => ['A', 'B'], 'b' => 'B', 'a b' => 'A B' );
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