Hmm ... as far as I understood dave, copying to an rvalue doesn't help, because the array has already been "prepared" for later modification without taking care about any rvalue context !(?)

so calling with arg @a-1 is always the fastest alternative.

Cheers Rolf

In reply to Re^10: Does @{ } copy arrays? by LanX
in thread Does @{ } copy arrays? by tford

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