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Re^3: Error Handling with Packages

by Forsaken (Friar)
on May 23, 2005 at 20:17 UTC ( #459697=note: print w/replies, xml ) Need Help??

in reply to Re^2: Error Handling with Packages
in thread Error Handling with Packages

Yeah, you're right, looks like I got them the wrong way around . As for talking to the end-user from a module, I think using carp for that is an elegant solution, especially when it's something that can be toggled on and off using a flag. For example:
package Foo; use strict; use warnings; sub new { my($class, $debug) = @_; my $self = {}; bless($self, $class); if($debug) { $self->{'Debug'} = 1; } return $self; } sub bar { my($self, $hashref, @arguments) = @_; unless(ref($hashref) eq 'HASH') { if($debug) { carp "ERROR: first argument to \'bar\' must be a hashref"; } return; } #insert code here return $result; }
I find carp most useful for these cases. Personally I feel a module should never die on its own, that's my decision...

Remember rule one...

Replies are listed 'Best First'.
Re^4: Error Handling with Packages
by salva (Canon) on May 23, 2005 at 20:44 UTC
    to allow your module users to activate/deactivate warnings you can use warnings::register and warnings::enabled() instead of a custom aproach.

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