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Re^2: perl inheritance

by Anonymous Monk
on Mar 23, 2012 at 18:38 UTC ( #961283=note: print w/replies, xml ) Need Help??

in reply to Re: perl inheritance
in thread perl inheritance

This is *very* interesting... Thank you! Would this be invoked in the constructor of the derived class?


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Re^3: perl inheritance
by JavaFan (Canon) on Mar 23, 2012 at 19:10 UTC
    Would this be invoked in the constructor of the derived class?
    Of course not! This is something you need to be done once, and on class level. So, you'd do it outside of any method. That way, it get executed when you use the module.
      This smells like a good place for an import method.. What do you think? thanks!

        No, I wouldn't put it in an import module. A BEGIN block would be better. If you put it in import, you have no guarantee that the import method will ever actually be called. It's quite easy to load a module without ever calling the import method. Conversely, it's very easy for the import method to get called multiple times.

        I actually do something pretty similar to the technique being discussed in XML::LibXML::Augment.

        perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'
        Sounds like a bad idea to me. Why do you think that's a good idea?

      this smells like it should go in an import method? What do you think ?

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