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[stdlib] Eradicate IndexDistance associated type (#12641)

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* Eradicate IndexDistance associated type, replacing with Int everywhere

* Consistently use Int for ExistentialCollection’s IndexDistance type.

* Fix test for IndexDistance removal

* Remove a handful of no-longer-needed explicit types

* Add compatibility shims for non-Int index distances

* Test compatibility shim

* Move IndexDistance typealias into the Collection protocol
This commit is contained in:
Ben Cohen
2017-12-08 12:00:23 -08:00
committed by GitHub
parent ddac6ab1b9
commit 4ddac3fbbd
60 changed files with 268 additions and 302 deletions
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stdlib/public/core/StringCharacterView.swift
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@@ -211,7 +211,6 @@ extension String._CharacterView : BidirectionalCollection {
}
public typealias Index = String.Index
public typealias IndexDistance = Int
/// The position of the first character in a nonempty character view.
///