[swift-evolution] [Pitch] Rename `index(of:)` and `index(where:)` to `firstIndex(of:)` and `firstIndex(where:)` respectively

[Tim Vermeulen]

Great! A +1 from me for that proposal then :)

> > On Jul 24, 2016, at 2:58 AM, Tim Vermeulen via swift-evolution<swift-evolution at swift.org>wrote:
> > 
> > `firstIndex` is completely unambiguous, whereas with `index` people might wonder which index is returned. Also, if `lastIndex` methods ever get added to the standard library, they will be a lot more consistent with `firstIndex` than with `index`.
> > 
> > On the other hand, `index` is short and simple, and people might not care whether it is the first index that matches or a different one. Still I think `firstIndex` is more in line with the naming guidelines.
> > 
> > Thoughts?
> Working on it! https://github.com/brentdax/swift-evolution/blob/09be1007c5138be2370f33d761b05b8b6700a9a3/proposals/NNNN-sequence-end-ops.md
> 
> --
> Brent Royal-Gordon
> Architechies
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