Cool. Accessing $a[$i] isn't enough to vivify (otherwise your defined test would do it).

So we don't actually need the defined test in your map and can get away with:

# This *doesn't* vivify $a[3,4,5]
@b = map { $a[$_] } (0..5);

[download]

Thanks.

In reply to Re^2: Avoiding vivification with array slice by jbert
in thread Avoiding vivification with array slice by jbert

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