[swift-evolution] Change `repeat` to loop indefinitely if no while clause is present

[Tyler Cloutier]

> On May 10, 2016, at 1:10 PM, Austin Zheng via swift-evolution <swift-evolution at swift.org> wrote:
> 
> Agreed. I'm not convinced that this actually prevents any more errors than it might cause (forgot to finish writing my "repeat" block, and now my app is unresponsive), and I don't think there's enough of an expressivity win to add another keyword.

Certainly it’s not adding a new keyword, however it is changing the meaning of a keyword.

> 
> Austin
> 
> On Tue, May 10, 2016 at 1:04 PM, Haravikk via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> 
>> On 10 May 2016, at 08:27, Nicholas Maccharoli via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
>> 
>> 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 }
>>         //...
>>     }
> 
> -1 from me on both counts; the thing I like about while true is that it’s explicit about what I meant, whereas a repeat block with no while clause is indistinguishable from me forgetting to include one, or me wanting an infinite loop.
> 
> An alternative could be to add a new “forever” keyword or something similar, replacing while true wherever applicable, but personally I don’t think it’s that important.
> 
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