Idiomatic? Needlessly obfuscated, I'd say, without even a gain
in keystrokes. $|=1 takes four keystrokes, $|++ as well, but has more shifted keys. And it gives the false impression that you can turn buffering off by doing
$| -- as often as you've given $| ++.
$| = 0;
$| ++; $| ++; $| --; $| --;
print $|; # prints 1, not 0!
If I were to code review production code, someone writing
$| ++ instead of $| = 1 better have a pretty damn good reason for doing so.
Abigail
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