Re^4: Pre vs Post Incrementing variables

[JavaFan]

The fact that f( ++$n, ++$n ) passes an alias to $n, rather than the value resulting from the preincrement, is just another broken behaviour.

Note that this behaviour isn't unique to ++.

    sub f {say "@_"}
    my $n = 1;
    f $n += 2, $n += 2;
    __END__
    5 5

[ikegami]

grep, values and lvalue subs also return lvalues. substr, pos and keys can also return lvalues.