I know that i have the code for this somewhere, but I seem to have forgotten how to do this.

I have a constructor for one class, and I want to pass the reference to another subroutine to it. Let's say that I have a Collection, and I want to create it with a specified Sorter.

my $collection = Collection->new({ 'sorter' => Sort::mysorter });

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Collection->new() has the following: 

sub new
{
  my ($self, $options) = @_;
  .  .  .
  $self->{sorter} = /&{$options->{sorter}};
}

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Now, $self->{sorter} is a CODEREF.

Then, when you want to invoke the subroutine you do: 

$self->{sorter}($mystuffToSort);

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I get an "undefined subroutine" error whenever the subroutine lives outside the calling class. Can you help a forgetful old man?

DrSax

In reply to Passing a reference to a subroutine in a constructor by DrSax

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