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kotlin - 处理这种情况的最佳方法是 "smart cast is imposible"

我想知道处理这种情况的最佳方法是什么classPerson(varname:String?=null,varage:Int?=null){funtest(){if(name!=null&&age!=null)doSth(name,age)//smartcastimposible}fundoSth(someValue:String,someValue2:Int){}}调用doSth方法并确保name和age为ntnull的最简单方法是什么?我正在寻找一些简单的东西,比如我会简单地使用let的可变场景name?.let{doSth(it)} 最佳答案

swift - Xcode 8 with legacy Swift 2.3 : SourceKit imposes Swift 3. 0 rules & shows phantom errors

Xcode似乎在被动地鼓励我切换到Swift3.0。在我键入代码和调用构建时,会出现与Swift3.0语法相关的各种警告和错误,只有在编译完成后才会消失。“左手”的动态增量编译设置似乎与“右手”的静态实际编译设置无关。这很让人分心。这是XcodeGM8.1。有没有其他人遇到过这种情况并找到了解决方法? 最佳答案 它正在测试您的内在力量2.3与3.0知识。您必须保持坚定,并坚持使用昔日的语法。考虑一下生活中的挑战之一。不要屈服于3.0的挑衅。因为如果你表现出一瞬间的弱点并屈服,就会有撤消更改以使其与2.3一起编译。保持坚强。还有更多f

Sanctions against Russia Are Being Imposed by Global Tech Giants

Severaldaysago,JetBrainsannouncedonitsofficialblogthatitwouldsupportUkrainepubliclyandsuspenditssalesinRussiaandBelarusindefinitely.ThecompanyisbestknownforitsproductIntelliJIDEA,whichisanintegrateddevelopmentenvironmentforJavaprogramming.InthecurrentconflictbetweenRussiaandUkraine,itisnotuncommonfo

Sanctions against Russia Are Being Imposed by Global Tech Giants

Severaldaysago,JetBrainsannouncedonitsofficialblogthatitwouldsupportUkrainepubliclyandsuspenditssalesinRussiaandBelarusindefinitely.ThecompanyisbestknownforitsproductIntelliJIDEA,whichisanintegrateddevelopmentenvironmentforJavaprogramming.InthecurrentconflictbetweenRussiaandUkraine,itisnotuncommonfo