Sorry I misunderstood your question (see update in meantime), but it can still be the same effect that for tries to be clever and iterates @a, while map is flattening.

Output with perl -MO=Terse seems to indicate this...

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)

PS: Je suis Charlie!

In reply to Re^3: map vs for\foreach. by LanX
in thread map vs for\foreach. by builat

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