Hellow fellow Monks,
I recently came up with a really weird way to use perl's
hashes. Maybe someone tried it before and found it
usefull or maybe I just came up with the most usless
thing ever ;)
Here is the example code: 
#!/usr/bin/perl
use warnings;
use strict;

my %options = (
        one => \&one,
        two => \&two,
        three => \&three,
);
my $ret; # return code from the sub
while(chomp(my $opt = <STDIN>)){
        if(exists $options{$opt}) {
                $ret = &{$options{$opt}};
                last if $ret == 0;
        }
        else { default(); }
}

sub one {
print "one\n";
return 1;
}

sub two {
print "two\n";
return 1;
}

sub three {
print "three and break the loop\n";
return 0;
}

sub default {
print "Default\n";
}

[download]
I thought of it as a method to avoid a really long list of
if-elsif-elsif-elsif-elsif-else chain, and as Perlmonks
is full of people that understand perl much better than
I do so I decided to contribute this idea, and would
really like to know your honest opinions on such a weird
hash usage.

Here are the questions:
a) Is it worth using?
b) Is this will be taken as a 'bad style' example?
c) Is if-elsif-elsif-elsif-else chain more efficient than this?

Thank you all for taking the time to read this node.
Regards,
Mulander

In reply to Hash option/menu loop wierd or usefull? by mulander

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