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Re: 'require/use' scoping

by brian_d_foy (Abbot)
on Jan 29, 2008 at 15:26 UTC ( #664910=note: print w/replies, xml ) Need Help??

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  1. or download this
    use Foo;
    
    ...
        require Foo;
        Foo->import;
        }
    
  2. or download this
    use MODULE qw(import list);
    
    ...
        require MODULE;
        MODULE->import(import list);
        }
    
  3. or download this
    use MODULE ();
    
    BEGIN {
        require MODULE;
        }
    
  4. or download this
    require "lib/Foo.pm"; # no @INC searching!
    
  5. or download this
    sub require {
      my ($filename) = @_;
    ...
          return $result;
      }
    }
    

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[choroba]: Good morning, Monks!
[Corion]: And a good daypart to you as well, Lady_Aleena !
[robby_dobby]: Hey monkeys, do you ever get the realization that you're all waking up to chaos? I suppose not :P
[Lady_Aleena]: Good morning Corion, I hope you have a wonderful day as well. 8)
[Corion]: Yesterday I encountered an interesting data structure problem. I have a remote program that emits events, and my client listens for these events with one-shot callbacks, that is, I register the callback and if the event gets generated that callback ...
[Lady_Aleena]: robby_dobby, every day. Chaos is my life with few controls.
[Corion]: ... gets called once. The data structure for that is just a hash of arrays, mapping the event type to a queue of registered one-shots, and the first one-shot from the queue gets removed and called.
[Corion]: But now I want to register a one-shot for two events, of which only one will arrive, so my data structure doesn't work anymore...
[Lady_Aleena]: Corion, ouchy.
[Corion]: (maybe I should write this up as a SoPW) - currently, the "most efficient" data structure I come up with is a single array which I scan for the first fitting one-shot. Not efficient but I don't expect more than five outstanding one-shots anyway

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