> On May 10, 2016, at 12:39 AM, Xiaodi Wu via swift-evolution
> <[email protected]> wrote:
>
> On Tue, May 10, 2016 at 2:27 AM, Nicholas Maccharoli via swift-evolution
> <[email protected] <mailto:[email protected]>> wrote:
> Swift Evolution Community,
>
> Currently writing an infinite loop in swift looks either something like this:
>
> while true {
> if ... { break }
> //...
> }
>
> Or this:
>
> repeat {
> if ... { break }
> //...
> } while true
>
> But I think it might be best to change the syntax / behaviour of `repeat` to
> loop
> indefinitely if no trailing while clause is present:
>
> repeat {
> if ... { break }
> //...
> }
>
> while still allowing a trailing `while` clause as in:
>
> repeat {
> foo += bar
> } while foo.count < limit
>
> What is your motivation for this change?
>
> I also want to propose that it should be a compile time error to use single
> `Bool` constants as while loop conditions, so no more `while true { ... }` it
> would become `repeat { ... }`
>
> What problems are solved by forbidding `while true`?
I don’t think the proposal is forbidding it, but rather making it optional. So
that
repeat {
}
is equivalent to
repeat {
} while true
>
> I was thinking of drafting a short proposal if there was enough positive
> feedback.
>
> How does it sound?
>
> - Nick
>
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