Had fun making a type-safe value-oriented collection view data source in Swift today.
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At least it's reusable, unlike most CV / TV data sources. But yeah, dude, I'm with you.
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I think you want countElements; it counts random-access collections in O(1) and others in O(N).
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Oh dang! Lovely.
But what if I want to implement my own collection, for which there's a reasonable O(1) count()? :/
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Although in practice, the CollectionType I'm passing to these things will probably be lazy, which would want ref semantics.
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Interesting! It's a great solution to the "Swift challenge" we did a few weeks ago @ where I work gist.github.com/Thomvis/db69e0
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this is great. How would you go about adding a delegate (e.g. delegate:didSomethingWithItem:) to it?
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Composition; that's another thing.
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