[swift-evolution] [Proposal] More lenient subscript methods over Collections

[Brent Royal-Gordon]

> It sounds good, thanks for you suggestions @Vladimir, @Patrick and @Brent.
> 
> I've just updated the proposal: 
> https://github.com/luish/swift-evolution/blob/more-lenient-subscripts/proposals/nnnn-more-lenient-collections-subscripts.md#detailed-design
> 
> - Luis

Hmm. If you're going with `checking` for one of them, perhaps the other should be `clamping` (for the analogous method on `Range`, which you might want to use in the implementation of that subscript). That would create a nicely matched pair:

	array[checking: 0..<10]
	array[clamping: 0..<10]

-- 
Brent Royal-Gordon
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