I’m running this one-liner from the command line:
perl -MList::Util=sum -E 'my $x = 0; say sum(++$x, ++$x)'
Why does it say "4" instead of "3"?
I’m running this one-liner from the command line: perl -MList::Util=sum -E ‘my $x =
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I’m running this one-liner from the command line:
perl -MList::Util=sum -E 'my $x = 0; say sum(++$x, ++$x)'
Why does it say "4" instead of "3"?
You are modifying
$xtwice in the same statement. According to the docs, Perl will not guarantee what the result of this statements is. So it may quite be"2"or"0".