Is there a way to define a default value for a hash?
I do not know. But, you could create a function to see if a key exists:
use warnings;
use strict;
my %description = (
a => 'a vowel',
b => 'a consonant'
);
print 'a is ', check(\%description, 'a'), "\n";
print 'b is ', check(\%description, 'b'), "\n";
print '~ is ', check(\%description, '~'), "\n";
sub check {
my ($href, $key) = @_;
return (exists $href->{$key}) ? $href->{$key} : 'not in the alphab
+et';
}
prints:
a is a vowel
b is a consonant
~ is not in the alphabet
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