[swift-evolution] [Pitch] Add an all algorithm to Sequence

[David Hart]

> On 1 Apr 2017, at 11:32, Rien <Rien at Balancingrock.nl> wrote:
> 
> 
>> On 01 Apr 2017, at 10:47, Xiaodi Wu via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> On Sat, Apr 1, 2017 at 3:40 AM, David Hart via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>>> On 1 Apr 2017, at 09:50, Brandon Trussell <brandon2k3 at gmail.com> wrote:
>>> 
>>> I agree that based on the method name, I thought a collection would be returned.  
>> 
>> Now that I think more about it, I think you're right. It is confusing. Perhaps:
>> 
>> allAre(equalTo: )
>> allAre(matching: )
>> 
>> Well, if we're going to go full stdlib naming guidelines, shouldn't they be--
>> 
>> ```
>> areAll(equalTo:)
>> areAll(matching:)
>> ```
> 
> 
> thatAre(equalTo: )
> thatAre(matching: )

That would be confusing again. You'd get the impression that the functions are returning elements of the Sequence, not a Bool.

> Regards,
> Rien
> 
> Site: http://balancingrock.nl
> Blog: http://swiftrien.blogspot.com
> Github: http://github.com/Balancingrock
> Project: http://swiftfire.nl
> 
> 
>> 
>>> On Sat, Apr 1, 2017 at 12:36 AM, David Hart via swift-evolution <swift-evolution at swift.org> wrote:
>>> 
>>> 
>>>> On 1 Apr 2017, at 06:02, Will Stanton via swift-evolution <swift-evolution at swift.org> wrote:
>>>> 
>>>> +1 to adding, but the name `all` suggests (to me) the return of another sequence, not a Bool.
>>> 
>>> I'm not too concerned because the mandatory labels makes it clear.
>>> 
>>>> Perhaps the function name should be question-like?
>>>> 
>>>> Suggesting: `membersSatisfy(condition:)` or `allSatisfy(condition:)` or maybe even just `satisfies(condition:)`
>>>> The question-like modifier/verb is necessary to suggest a Bool and IMO not a needless word.
>>>> 
>>>> Regards,
>>>> Will Stanton
>>>> 
>>>>> On Mar 31, 2017, at 11:28, Ben Cohen via swift-evolution <swift-evolution at swift.org> wrote:
>>>>> 
>>>>> Hopefully non-controversial, aside from the naming of the method and arguments, about which controversy abounds
>>>> 
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>>> 
>>> -- 
>>> Brandon
>> 
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