On Fri, Jul 04, 2003 at 06:03:55PM -0400, Casey West wrote:
> It was Friday, July 04, 2003 when David Storrs took the soap box, saying:
> : I've got a function that takes several arguments, the first of which
> : should be a scalar (specifically, a string). I'd like to have a
> : precondition to verify that the argument is, in fact, a scalar. Is
> : there a way to do that (preferably without using modules--I'm trying
> : to write an entirely self-contained script).
>
> Provided that you really have a function, that you're calling as a
> function, you can use prototypes. They are documented in perlsub, and
> have the following syntax.
>
> sub function($) {
>
> }
>
> This will require the first argument to be scalar. If the first
> argument is mandatory, follow the dollar sign ($) with a semi-colon
> (;).
Thanks Casey,
I was trying to avoid prototypes, because I wanted people to be able
to pass the arguments in as function(@args), but maybe this is the way
to go. Or maybe I just won't worry about it. Thanks.
--Dks
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