> >>>>> "Dan" == Dan Muey <[EMAIL PROTECTED]> writes:
>
> >> I want to be able to return a true or false value from a
> >> function in a module and populate the $! variable with the
> >> specific errors. Is this possible? Is there documentation on
> >> how to do this? I can find docs on how to use $! but not how to
> >> set it. Thanks for any help -Ken
>
> Dan> Did anyone ever reply to this post? I couldn't find it in
> Dan> the archives and I thinnk it's a pretty good question.
>
> Dan> For instance would it be 'safe' and 'proper', and 'ok',
> Dan> etc... to do somethign like:
>
> Dan> sub whatever { my $foo = shift; undef $!; if($foo eq 'bar') {
> Dan> return 1; } else { $! = "Foo must equal bar";return 0; } }
>
> $! is for system-call-related errors that can be mapped to
> errno return values. I don't see "Foo must equal bar" fits
> that definition. Perhaps you want to look at the "Exception" module.
>
> Having said that, you can set $! to a numeric value, and
> it'll return that number in a numeric context, and the
> appropriate error text in a string context. Rememeber that
> $! is just a thin wrapper over errno though, so any
> system-call-related activity will change it.
>
> --
Thanks for the info, very helpful!
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