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Postings from January 2022
On Friday, 21 January 2022, 17:49:47 CET, Ovid via perl5-porters <perl5-porters@perl.org> wrote:
> I knew my 3VL discussion went over like a lead balloon, but I couldn't resist being cheeky ...
>
> use Unknown::Values;
>
> sub foo ($bar = unknown) {
> say is_unknown $bar ? "unknown" : "known";
> }
>
> foo();
>
> That prints "unknown", so if someone passed in `undef`, it will print "known" because
> someone explicitly assigned to it.
Er ... because someone "didn't" explicitly assign to it. (Damned typos (sic))
Best,
Ovid
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