Re: fun with hashes!

"A. Pagaltzis" <[email protected]> Sat, 24 Nov 2007 16:10:17 +0100
Newsgroups gmane.comp.lang.perl.fun
Message-ID <20071124151017.GH20669@klangraum>
* David Landgren <[email protected]> [2007-11-24 10:45]:
> Uri Guttman writes:
>>>>>>> "AP" == A Pagaltzis <[email protected]> writes:
>>   AP> * Jerrad Pierce <[email protected]> [2007-11-23 22:50]:
>>   >> exists( $dispatch{$sub} ) ? $dispatch{$sub}->() :
>>   >> warn "Key <$sub> does not exist in the dispatch table";
>>   AP>     ( $dispatch{$sub} || sub { warn "no such action '$sub'" } )->();
>> some variations on that:
>> 	my $sub = $dispatch{$key} or die "trying to call missing code" ;
>> 	$sub->() ;
>> or:
>
> [...]
>
>> or:
>> 	my $sub = $dispatch{ $key } || $dispatch{ 'default' } ;
>
> Why stop there? Assuming $key never evaluates to 0:
>
>   my $sub = $dispatch{ $key || 'default' };

Your dispatch table has keys for all nonzero strings?

That’s one big hash.

Regards,
-- 
Aristotle Pagaltzis // <http://plasmasturm.org/>