Very strange indeed. And it doesn't even have to be a state variable, i.e.

my $c = 0;
my @partitions = map { [$c, $c += $_] } @widths;

[download]

gives the same result.

Whereas [$c+0, $c += $_] produces

[0, 2]
[2, 8]
[8, 13]
[13, 20]

[download]
and so does [my $tmp = $c, $c += $_]

In reply to Re: Why does the first $c evaluate to the incremented value in [$c, $c += $_] ? by hazylife
in thread Why does the first $c evaluate to the incremented value in [$c, $c += $_] ? by smls

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