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Hello fionbarr, When I use 'given/when' I get the message 'given is experimental' and the program will not compile. Are you using a very old version of Perl? According to perlexperiment, the smartmatch feature was introduced in Perl 5.10.0, so unless your version is older than that, the program should compile OK — but emit warnings — as long as you remember to use feature 'switch':
The warnings can be turned off with this pragma:
But if you’re going to use when, you should still replace the topicaliser given with its more prosaic alternative for, as explained by brian_d_foy in his article “Use for() instead of given().” However, even the use of when is not recommended for production code. For other switch options, begin with How-do-I-create-a-switch-or-case-statement of perlfaq7. And if a dispatch table doesn’t meet your particular needs, what’s wrong with if/elsif/.../else, anyway? :-) Hope that helps,
In reply to Re: switch statement
by Athanasius
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