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

[Ricardo Parada]

I agree. 

> On Mar 31, 2017, at 5:32 PM, Robert Bennett via swift-evolution <swift-evolution at swift.org> wrote:
> 
> I'm don't think we need all(equal:).
> 1) For a host of reasons, having a single signature for a function name is better than having multiple signatures when the single signature is capable enough.
> 2) A list containing a single distinct element is not a special enough case to check for to warrant its own function signature.
> 
> all(equal:) can be replicated easily enough with nums.all { $0 == 9 }. Unlike all(equals:), this is extendible to non-Equatable types with equatable members.
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