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August 29, 2015 14:03
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This function creates an index/element tuple generator that actually uses the right indices, but it fails with a *really* weird error.
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| func realEnumerate<C: Swift.Collection>(collection: C) -> GeneratorOf<(C.IndexType, C.GeneratorType.Element)> { | |
| var i: C.IndexType = collection.startIndex | |
| return GeneratorOf() { | |
| if i < collection.endIndex { | |
| // 'i' is flagged in comparison with "'C.IndexType' is not convertible to 'CString'". Whuh? | |
| let value = (i, collection[i]) | |
| i = i.successor() | |
| return value | |
| } | |
| else { | |
| return nil | |
| } | |
| } | |
| } |
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Answer on that one: IndexType is not Comparable, which is impossible to tell because most of Collection's definition is missing. Yay for betas!