Weren't there a whole pile of warnings about using source filters at one point?
Yes. The Switch module mistakenly escaped into Perl 5.8. Do not use it. The Switch module was deprecated in Perl 5.10 and removed in Perl 5.14.

Notice that in Categorized Damian Modules, the Switch module is categorized by its author as "Damian modules you shouldn't use in production because their purpose is to explore and prototype future core language features".

See also: stackoverflow question on why the Switch module is deprecated.

In reply to Re^3: If conditional checks by eyepopslikeamosquito
in thread If conditional checks by kitkit201

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