Assigning a hash to another hash

Sat, 22 Mar 2014 10:37:50 -0400

A hash can be assigned to a key of another hash using hash reference.

For a hash %HASH, it’s reference is obtained by \%HASH.

In the below example, the %fruit_colors and %veg_colors are assigned to the %food_colors hash.

use Data::Dumper;

my %food_colors = (
 Fruits => undef,
 Vegetables => undef
 );

my %fruit_colors = (
 Apple => "red",
 Banana => "yellow"
 );

my %veg_colors = (
 "Green pepper" => "green",
 Potato => "white"
 );
print Dumper(\%food_colors);
print Dumper(\%fruit_colors);
print Dumper(\%veg_colors);

$food_colors{Fruits} = \%fruit_colors;
$food_colors{Vegetables} = \%veg_colors;
print Dumper(\%food_colors);

hash on A Scripter's Notes

Assigning a hash to another hash