If there is a good reason, (and I cannot think of one), then given the not insignificant difference in performance:

I don't know about good, but I think I've seen this scenario with callbacks, POE/LWP/Tk.... sometimes the first arg is large object, or large string, and you wish to avoid $_[0] or $_[CONSTANT] etc etc

In reply to Re^2: Is undef list assignment a no-op? by Anonymous Monk
in thread Is undef list assignment a no-op? by repellent

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