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Subroutine accessible as

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Contributed by damian1301 on Oct 27, 2000 at 05:34 UTC
Q&A  > subroutines


How is it done?!

Answer: Subroutine accessible as
contributed by chromatic

Jellybean is based on this idea.

The easiest thing to do is to create a hash of code refs. Pull out the query string or URL information or whatever, then use that data as the hash key.

If there's a valid code ref there, call that subroutine. If not, show an error or do a default sub.

For example, you could write:

my %sub_refs = ( foo => \&do_this, bar => \&do_that, ); my $request = $ENV{QUERY_STRING}; if (defined(my $action = $sub_refs{$request})) { $action->(); } else { default(); }
I'd do something more sophisticated in place of the query string scheme, as it's not terribly brilliant.
Answer: Subroutine accessible as
contributed by merlyn

See Apache::Dispatch. Yup. The normal answer: "There's a CPAN module that does this." {grin}

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