Thanks I'll do that.
>
> From: "Dan Muey" <[EMAIL PROTECTED]>
> > Here's something I've been wondering....
> >
> > What kind of performance issues are there if you do a 'use' on the
> > same module in the same script twice or more?
>
> Depends.
> This can be verry different for different modules.
>
> use Module;
> does two things:
> 1. it loads, parses and compiles a module
> 2. it calls it's import() function
>
> While the first action is only been done the very first time the
> module is use()d anywhere in your script, the import() will be called
> each time you use the module.
>
> Try this:
>
> #file Foo.pm
> package Foo;
> sub import {
> print "Import called\n";
> }
> 1;
>
> #file foo.pl
> use Foo;
> use Foo;
> use Foo;
> print "ENDE\n";
>
>
> The import() function usualy just import some functions or variables
> into the calling package in which you use()d the module, but there
> are some modules that do a lot more. They usualy do take care they do
> not do that twice though.
>
> > Before you go ' Well that's stupid, why would you do that? ' let me
> > explain :
> >
> > Script one has
> >
> > use CGI;
> > ...
> > If it does cause perfance issues is there a way to check and see if
> > the module's already been 'use'd and then if it hasn't then do use ?
> >
> > EG if(??????) { use CGI; }
>
> if (!exists $INC{'CGI.pm'}) {
> eval "use CGI";
> }
>
> > What if you already did
> >
> > Use CGI params; and in the sub routine you only need say use CGI
> > self_url; ? Or if you did use CGI param earlier and the sin
> does use
> > CGI;
>
> I'm afraid you'll have to try this and see.
>
> Jenda
> ===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz =====
> When it comes to wine, women and song, wizards are allowed
> to get drunk and croon as much as they like.
> -- Terry Pratchett in Sourcery
>
>
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