>>>>> "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.
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