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

[Rien]

> On 02 Apr 2017, at 07:51, Karl Wagner via swift-evolution <swift-evolution at swift.org> wrote:
> 
> Given the relationship to contains, why not keep it simple and go with:
> 
> onlyContains(_ element:)
> onlyContains(_ matching:)
> 
> [9, 9, 9, 9, 9].onlyContains(9) // true
> [1, 2, 3, 2, 3].onlyContains { $0 < 3 } // false
> 
> - Karl

IMO, we have a winner!

Rien.

> 
>> On 1 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:)
>> ```
>> 
>>> 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
>>> >
>>> > _______________________________________________
>>> > swift-evolution mailing list
>>> > swift-evolution at swift.org
>>> > https://lists.swift.org/mailman/listinfo/swift-evolution
>>> 
>>> _______________________________________________
>>> swift-evolution mailing list
>>> swift-evolution at swift.org
>>> https://lists.swift.org/mailman/listinfo/swift-evolution
>>> 
>>> 
>>> 
>>> -- 
>>> Brandon
>> 
>> _______________________________________________
>> swift-evolution mailing list
>> swift-evolution at swift.org
>> https://lists.swift.org/mailman/listinfo/swift-evolution
>> 
>> 
>> _______________________________________________
>> swift-evolution mailing list
>> swift-evolution at swift.org
>> https://lists.swift.org/mailman/listinfo/swift-evolution
> 
> _______________________________________________
> swift-evolution mailing list
> swift-evolution at swift.org
> https://lists.swift.org/mailman/listinfo/swift-evolution