Swift字符串比较使用什么样的规范化？ [英] What kind of normalization is used by Swift string comparisons?

问题描述

在其他地方，我看到它告诉 Swift的比较使用NFD规范化。

Elsewhere I've seen it told that Swift's comparisons use NFD normalization.

但是，在iSwift操场中运行，我发现

print("\u{0071}\u{0307}\u{0323}" == "\u{0071}\u{0323}\u{0307}");

给予 false http://unicode.org/reports/tr15/#Canonical_Equivalence_Figure =nofollow>这是直接来自规范等同标准的示例， Swift的文档声明遵循。

gives false, despite this being an example straight from the standard of "Canonical Equivalence", which Swift's documentation claims to follow.

所以，什么样的规范是由Swift执行的，这是一个错误吗？

So, what kind of canonicalization is performed by Swift, and is this a bug?

推荐答案

看起来这是在Swift中的错误，已经修复。使用Swift 3和Xcode 8.0，

It seems that this was in bug in Swift that has since been fixed. With Swift 3 and Xcode 8.0,

print("\u{0071}\u{0307}\u{0323}" == "\u{0071}\u{0323}\u{0307}")

现在打印 true 。

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