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Re: Algebraic Hash Configuration via Delayed Closure?by btrott (Parson) |
on Mar 06, 2001 at 23:36 UTC ( [id://62559]=note: print w/replies, xml ) | Need Help?? |
It's not a closure that you're using, because a closure "binds" to
lexical variables that exist *when the closure is created*. As
you said, $W doesn't exist then; it exists *later*. So what you should probably do instead is just something like this: And then do: In other words, pass $W and $H as args rather than rely on them being set when the sub is executed. If it were a closure, this would work; but it's not, bceause you're relying on the lexicals existing when you *execute* the subref, not when you *define* it. String eval might be another way of accomplishing your goal, but I think you'd be better off just passing args.
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