> On May 10, 2016, at 2:13 PM, Harlan Haskins via swift-evolution
> <[email protected]> wrote:
>
> You could always do your control flow with goto’s anyway…
>
> func foo() {
> var i = 0
> func goto(_ label: String = "entry") {
> switch label {
> case "entry":
> print("beginning loop…")
> goto("cond")
> case "cond":
> goto(i < 10 ? "body" : "end")
> case "body":
> i += 1
> print("\(i)")
> goto("cond")
> case "end":
> break
> default: break
> }
> }
> goto()
> }
>
> Apologies,
> Harlan
And isn’t this the point really. Yes there are many different ways of doing
something, but there should be one obvious way. IMHO, there is nothing more
obvious than just
repeat {
}
It’s very clear. It’s not about adding complex control flow, it’s about
simplifying current syntax. I don’t think anyone is arguing that it’s more
powerful than what while loops currently offer.
>
>> On May 10, 2016, at 2:05 PM, Taras Zakharko via swift-evolution
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> When I need a loop with complex control flow that does not fit into the
>> classical while {} or repeat {} while structure, I use this:
>>
>> do_stuff: do {
>> …
>> continue do_stuff
>> }
>>
>> This pattern explicit and allows very complex control flow patterns without
>> the drawbacks of the unrestricted goto construct.
>>
>> Therefore I don’t see utility with having a repeat {} without while clause.
>>
>> Best,
>>
>> Taras
>>
>>
>>> On 10 May 2016, at 22:39, Dominik Pich via swift-evolution
>>> <[email protected] <mailto:[email protected]>> wrote:
>>>
>>>
>>>>> On May 10, 2016, at 3:30 PM, Tyler Cloutier via swift-evolution
>>>>> <[email protected] <mailto:[email protected]>> wrote:
>>>>>
>>>>> Secondly it’s a very simple way of introducing new programmers to loops.
>>>>> It’s IMHO more clear to a new programmer that repeat will just repeat
>>>>> indefinitely vs while true.
>>>>
>>>> This point seems strange to me - why teach a new programmer about loops by
>>>> first showing them a looping construct they should probably never use in
>>>> actual practice until they really know what they’re doing?
>>> totally agree… it would be a bad first introduction, id say :)
>>>
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