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Swift 的可选型枚举 | Swift 教程 - Swift 语言学习 - Swift code - SwiftGG 翻译组 -...

 5 years ago
source link: https://swift.gg/2018/05/17/enums-and-optionals/?
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作者:Soroush Khanlou,原文链接,原文日期:2018-04-11译者:ennisk;校对:numbbbbb;定稿:CMB 去年我写了一篇关于在类中添加普通可选型属性使扩展功能变得更简单的文章,但是从长远来看会对代码库造成一定的损害,本文接上一篇内容。 假设你正在设计 App 中的认证流程,而且知道这个流程不是简单的线性执行代码,所以想写一些测试代码。

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