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Postings from December 2021
Op 19-12-2021 om 11:48 schreef Darren Duncan:
>
> Well the other reasonable solution is to treat the pair as "if the
> expression result is true" and "if the expression result is anything
> else". I actually thought of proposing that and then I didn't.
>
> This also means a ternary expression does NOT result in unknown if the
> test expression is unknown, rather it returns the "else" expression.
>
> However, doing that means these 2 things will behave differently in
> the presence of unknown where they wouldn't otherwise:
>
> if ($x) {
> foo();
> }
> else {
> bar();
> }
>
> if ($x) {
> foo();
> }
> if (!$x) {
> bar();
> }
>
> Now that may be less surprising and more ideal in the presence of
> unknown.
>
> What do you think of this alternative?
>
I like it from a conceptual point of view. It feels right. It feels
correct. But only for new code that is written with this 3VL in mind.
Otherwise I think it will open a can of bugs in existing code, so that
probably should still die.
HTH,
M4
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