Cannot find an initializer for type '[(String)]' that accepts an argument list of type '(LazyForward

概述Swift编译错误: Cannot find an initializer for type '[(String)]' that accepts an argument list of type '(LazyForwardCollection<MapCollectionView<Dictionary<Int, String>, Int>>)' 错误代码:         var dict = [1

Swift编译错误:Cannot find an initializer for type '[(String)]' that accepts an argument List of type '(LazyForwardCollection<MapCollectionVIEw<Dictionary<Int,String>,Int>>)'

错误代码:

var dict = [1: "m",2: "i",3: "i",4: "s"]

let dictKeysArray = [String](dict.keys)

根据字典字面量推断,该字典的类型是<Int: String>.即key为Int类型.错误的原因就是你用Int类型的初始化了key,现在又用String类型的取.所以会报该编译错误.

正确写法:

let dictKeysArray = dict.keys

或者将String改成Int. 总结

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