In addition to the post above, I would think that just copying one scalar is not that big a deal. Remember that you're copying only the hash reference, not the complete %data hash.

In fact, if you use $_[3] a lot in the same function, it might even be slower than copying it to a lexical variable, because of the array indexing that needs to be done. (haven't benchmarked this at all, so I might be wrong)

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Trying to optimize de-referenced hash slice without scope variables... by Joost
in thread Trying to optimize de-referenced hash slice without scope variables... by monsieur_champs

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