使用未解决的标识符countElements [英] Use of unresolved identifier countElements

问题描述

let newLength = countElements(textField.text) + countElements(string) - range.length;

当我运行我的应用程序时，它突然显示未解决的标识符错误.

When i'm running my app, it suddenly shows the error of unresolved identifier.

推荐答案

似乎您正在尝试在更高版本的Swift中使用Swift 1.0代码. countElements在iOS 8.3(与Swift 1.2)中已删除-您需要登录才能查看

It appears you are attempting to use Swift 1.0 code in a later version of Swift. countElements was removed in iOS 8.3 (with Swift 1.2) -- you need to be logged in to see the release notes

在Swift 2.0中，现在是str.characters.count

in Swift 2.0, it is now str.characters.count

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