Perl Style: Learn to Switch with for

Though Perl has no built-in switch statement, this is not a hardship but an opportunity.

It's easy to build one. The word `for' is sometimes pronounced `switch'.

   SWITCH: for ($where) {
               /In Card Names/     && do { push @flags, '-e'; last; };
               /Anywhere/          && do { push @flags, '-h'; last; };
               /In Rulings/        && do {                    last; };
               die "unknown value for form variable where: `$where'";
           }

Like a series of elsifs, a switch should always have a default case, even if the default case `can't happen'.

Forward to Switch by Using do{} Creatively
Back to Closures
Up to index