Well, but what about this? It does not look like your third example worked... 
$ perl -wlE 'my $x=1; my @A=($x, $x++); say join $/, @A;'
2
1

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In reply to Re^2: Why does the first $c evaluate to the incremented value in [$c, $c += $_] ? by linuxer
in thread Why does the first $c evaluate to the incremented value in [$c, $c += $_] ? by smls

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