on Mon Jan 30 2017, Jaden Geller <jaden.geller-AT-gmail.com> wrote: >> On Jan 30, 2017, at 11:35 AM, Dave Abrahams via swift-evolution >> <swift-evolution@swift.org> wrote: >> >> Why should that be out-of-bounds? Whether it is out-of-bounds would >> depend on what items is. If it's an array, that should be equivalent to >> >> let x = items[items.startIndex..<items.endIndex] > > It seems to me that `items[0…]` would be equivalent to > `items[0…Int.max]` if we’re going to treat `0…` as an “infinite" > range, no? Otherwise, we’re either giving subscript of InfiniteRange > types special behavior or we’re making subscript ignore past-the-end > indices; `”hello”.characters[0…10]` would need to return the same as > “hello”.characters[0…4]` to be consistent.
What is it they say about “a foolish consistency?” ;-) More seriously, I think you may be viewing these ranges the wrong way around. 0... is not a range with an upper bound of infinity (which is, after all, not a number!); it's a range with *no* upper bound. When you use the range for slicing, the collection substitutes its own upper bound. HTH, -- -Dave _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution