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Re: List Wrapper for Object Methods.

by Arunbear (Parson)
on Dec 03, 2004 at 10:06 UTC ( #412078=note: print w/ replies, xml ) Need Help??

in reply to List Wrapper for Object Methods.

You can use AUTOLOAD to do that

our $AUTOLOAD; sub AUTOLOAD { my $self = shift; my $method = $AUTOLOAD; $method =~ s/.*://; # strip out Package:: foreach my $anything (@{$self}) { die "method $method not supported" unless $anything->can($method); $anything->$method(@_); } }
Though this does smell like it would benefit from the composite design pattern.

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Re^2: List Wrapper for Object Methods.
by pelagic (Curate) on Dec 03, 2004 at 11:25 UTC
    Thanks a lot Arunbear this works nicely.
    There's just one thing left for me:
    I see that my AUTOLOAD method now also "catches" calls for DESTROY and I don't know exactly what's happening then. Isn't the AUTOLOAD method a litte too generic?

      To get around that you can add the line
      return if $AUTOLOAD =~ /::DESTROY$/;
      at the beginning of the AUTOLOAD sub, or define a do-nothing DESTROY method (assuming you really don't have any cleanup to do). Perl calls the DESTROY method when it does garbage collection, even if you haven't defined a DESTROY method.

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