SPUG: Hashes and subroutines
Simon Wilcox
essuu at ourshack.com
Tue Jan 6 00:13:23 PST 2009
Christopher Howard wrote:
> I've got this situation where I execute a certain subroutine based on
> the value of a variable, like so:
>
> if($var eq 'play') { sub1() }
> elsif($var eq 'that') { sub2() }
> elsif($var eq 'funky') { sub3() }
> elsif($var eq 'music') { sub4() }
> ...
>
> Is there some way to do this with a hash instead?
As others have said, dispatch tables are what you're looking for. I've
always thought this article to be a really good introduction:
https://db.usenix.org/publications/login/2002-06/pdfs/turoff.pdf
Simon.
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