Swift 转义块声明

Question

我有以下代码：

typealias queryCompletionBlock = (_ finished:Bool) -> Void

func queryForParams(@escaping completion:queryCompletionBlock)

但我收到一个错误

Attribute can only be applied to types, not declarations

问题是函数需要块才能转义。如何使用转义块声明上述函数？

Answer 1

func queryForParams(completion: @escaping queryCompletionBlock)