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
elsif
s, 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
Copyright © 1998, Tom Christiansen All rights reserved.
Tags
Feedback
Something wrong with this article? Help us out by opening an issue or pull request on GitHub