четверг, 3 мая 2018 г., 11:25:34 UTC+3 пользователь rog написал:
>
> FWIW, the thing I miss sometimes is the equivalent of C's:
>
> while((x = next()) != nil) {
> something()
> }
>
> In Go you need to do either:
>
> for x = next(); x != nil; x = next() {
> something()
> }
>
> which duplicates the per-iteration expression, or:
>
> for {
> x = next()
> if x == nil {
> break
> }
> something()
> }
>
> which is 4 lines longer and the invariant is inverted.
>
> A two-part for statement could potentially do that:
>
> for x = next; x != nil {
> something()
> }
>
> but it's too subtly different from the normal form to be a good language
> change.
>
Two-part for statement - that is exactly what I suggested couple years ago,
and core-team
already rejected that.
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