in reply to Why are closures cool, continued?

Ok how about this: true or false (the author of the very first example in this thread and I were talking thru what constitutes this) ...

"A closure is different from an anonymous subroutine in that (instead of having private variables) it -saves- the variables passed into it in its scope!"

This seems like a reasonable enough and perfectly clear statement, but to be honest anytime I think something is reasonable and clear, that's when I'm about to start being REALLY wrong! :)

-mr.dunstan

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Re: Re: Why are closures cool, continued?
by perrin (Chancellor) on Jan 19, 2002 at 06:36 UTC
    Closure and anonymous sub -- two totally different things! An anonymous sub is a ref to a sub without a name. A closure is any sub (named or not) that refers to lexical variables defined outside of its scope.
      Nearly. An anonymous sub is a sub without a name that can only be accessed via a reference (to that sub).

      --
      g r i n d e r
      print@_{sort keys %_},$/if%_=split//,'= & *a?b:e\f/h^h!j+n,o@o;r$s-t%t#u';