> Am 10.06.2016 um 17:22 schrieb Erica Sadun via swift-evolution 
> <[email protected]>:
> 
> 
>> On Jun 10, 2016, at 8:02 AM, Xiaodi Wu via swift-evolution 
>> <[email protected]> wrote:
>> 
>> On Fri, Jun 10, 2016 at 7:18 AM, Haravikk <[email protected]> 
>> wrote:
>>>> * The word "where" does not consistently imply `break` or `continue`. In 
>>>> current Swift, `where` implies `break` in the context of a `while` loop 
>>>> and `continue` in the context of a `for` loop. Some users intuitively 
>>>> guess the correct meaning in each context, while others guess the wrong 
>>>> meaning. Therefore, the only way to learn for sure what `where` means in 
>>>> any context is to read the rulebook. That, by definition, means that this 
>>>> is unintuitive.
>>> 
>>> This is an argument for renaming the where keyword on for loops to be more 
>>> clear, or to somehow integrate continue/break to be more explicit about 
>>> what the developer intends for it to do.
>> 
>> Sure: I conclude that the keyword should be *either* removed *or* reformed; 
>> both outcomes could address the issue.
> 
> This is my stance as well and I reserve the right to flit between both 
> choices until we've fully talked it through.
> 
> One more data point. 
> 
> In the standard library there are just under 950 uses of "for in loops". 
> There are 3 uses of "for in while" :

How many of the 950 "for in loops" use a guard with continue? Only these can be 
compard with the "for in where loops".

-Thorsten 

> 
> private/StdlibUnittest/StdlibUnittest.swift.gyb:    for j in 
> instances.indices where i != j {
> public/core/Algorithm.swift:  for value in rest where value < minValue {
> public/core/Algorithm.swift:  for value in rest where value >= maxValue {
> 
> -- Erica
> 
> _______________________________________________
> swift-evolution mailing list
> [email protected]
> https://lists.swift.org/mailman/listinfo/swift-evolution
_______________________________________________
swift-evolution mailing list
[email protected]
https://lists.swift.org/mailman/listinfo/swift-evolution

Reply via email to