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“In an if statement, the conditional must be a Boolean expression—this means that code such as if score { ... } is an error, not an implicit comparison to zero.” 译文中 “not an implicit comparison to zero”未做翻译。
Swift 编程语言
Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。
感谢您的阅读。