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

[Ricardo Parada]

Yep, I like those too.  I think it would be very clear if they were named that.


> On Apr 3, 2017, at 3:57 PM, Adam Bridge <abridge at mac.com> wrote:
> 
> Perhaps
> 
> allMembersMatch()
> 
> or
> 
> everyMemberMatches()
> 
> This reads well in use.
> 
> On 2017-04-02, 6:18 PM, "Ricardo Parada via swift-evolution" <swift-evolution-bounces at swift.org on behalf of swift-evolution at swift.org> wrote:
> 
>    or perhaps containsOnly()
>    or maybe allMatch()
>    or membersMatch()
> 
>    :-)
> 
>    Sent from my iPhone
> 
>> On Apr 2, 2017, at 1:57 AM, Rien via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> 
>>> 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
>>>>>> 
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>>>>> 
>>>>> 
>>>>> -- 
>>>>> Brandon
>>>> 
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>>>> 
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