如何使用“distanceTo"、“advancedBy"在 Xcode7 beta6 中处理字符串

问题描述

我有一个 String 扩展，它在 Xcode7 beta5 上运行良好.但是，我昨天升级到了 beta 6.Swift 语法似乎有一些变化.编译我的代码时出现一些错误.

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是的.它显示了我应该使用哪些方法，还可以在苹果网站上找到一些信息.

解决方案

发生的事情是全局函数 distance 和 advance 已被实例方法取代 distanceTo 和 advancedBy.

I have an extension on String, it works fine on Xcode7 beta5.However, I upgraded to beta 6 yesterday. It seems Swift syntax has some changes. There are some errors while compiling my code.

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Yes. it shows which methods I should use and also finds some information on apple website. https://developer.apple.com/library/prerelease/ios/releasenotes/General/iOS81APIDiffs/modules/Swift.html

When I change the "distance" => "distanceTo". I got the error "Use of unresolved identifier 'distance to'". Does anyone know how to use "distanceTo", "advancedBy" exactly ??

解决方案

What's happened is that the global functions distance and advance have been replaced by instance methods distanceTo and advancedBy.

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