Xcode 8中没有'advancedBy' [英] 'advancedBy' is unavailable in Xcode 8

问题描述

当前，我一直在使用XCode 8并在线使用

Currently, I've been using XCode 8 and on the line

let range = key.startIndex...key.startIndex.advancedBy(0)

我得到了错误:

错误:"advancedBy"不可用:要使索引前进n个步骤，请在生成索引的CharacterView实例上调用"index(_:offsetBy :)".

error: 'advancedBy' is unavailable: To advance an index by n steps call 'index(_:offsetBy:)' on the CharacterView instance that produced the index.

我该如何解决?

以下是错误的屏幕截图:

A screenshot of the error is below:

推荐答案

advancedBy(_:)在Swift v3中已被弃用，并由index(_:offsetBy:)代替.有关更多信息，请参阅Apple的迁移指南.

advancedBy(_:) has been deprecated in Swift v3 and replaced by index(_:offsetBy:). Refer to Apple's migration guide for more info.

错误的解决方法:

let range = key.startIndex...key.index(key.startIndex, offsetBy: 0)

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