1. #3, I believe that, exactly because $a and $b are globals, closing over them doesn't make much sense.

    Yes. I musta been getting punch drunk when I said "It's perfectly possible to close over package globals in other instances,".

    'Closing' over a global, just means referencing a global. You just get whatever value it currently has, if any. In this case none, because the reduce code localises it.

  2. As an aside, I've never used assignment to $a in reduce - I thought the assignment was implicit

    You might be surprised at the other things I tried before getting it to work in 5.8.8 :)

    The affect is the same either way. reduce{ $a + $b }... and reduce{ $a += $b }... both end up with $a = $a + $b after each iteration.

    The latter just makes it a little clearer to the casual observer maybe?

  3. that second inner block, .... On 5.8.5, I get a "deep recursion" in the call to $combo if I remove that second block.

    Recursion? There shouldn't be any recursion.

    But hey! If we could work out what is going on and formalise it, we'd have achieved the Y Combinator without all those messy duplicate anonymous subs and extra parameters :)

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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In reply to Re^2: Bugs? Or only in my expectations? by BrowserUk
in thread Bugs? Or only in my expectations? by BrowserUk

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