You might want to pass in a code ref instead of a hash ref, and then in your function you can say: 
my $signature = $custom_coderef ? $custom_coderef->() : default_sig();

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The code ref itself can require any modules it needs, eg: 
my $coderef = sub{
  require Foo::Bar;
  my $signature = "blah";
  return $signature;
}

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In reply to Re^3: How do you say, in Perl.... by oxone
in thread How do you say, in Perl.... by willymacoy

Title:
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