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Re: Why callbacks?

by exussum0 (Vicar)
on Mar 30, 2007 at 17:51 UTC ( #607553=note: print w/replies, xml ) Need Help??


in reply to Why callbacks?

Callbacks are great for injecting behaviour into something - ruby calls them mixins.

Instead of having variables referenced within the function, outward, to something lexically scoped or globally is really weird. I would expect the callback retaining the data and you querying it for the result. Hrm..

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Re^2: Why callbacks?
by Joost (Canon) on Mar 30, 2007 at 17:56 UTC
      You can do mixins in Perl as well, by using Exporter to import methods into an OO class. CGI::Application uses this technique to add methods via plugins.
      Right right, was using the wrong terminology for what i meant. tnx.
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