Swift-尾随闭包语法 [英] Swift - Trailing Closure Syntax

问题描述

我正在研究Apple的Swift lang，使用尾随闭包语法会遇到一些问题，例如:

I'm diving into Swift lang by Apple and have some problems using the trailing closure syntax, example:

func test(txt: String, resolve: (name: String) -> Void) {
   resolve(name: "Dodo")
}

// Errors here complaining on resolve param
test("hello", (name: String) {
   println("callback")
})

如何解决?

推荐答案

您使用了错误的闭包语法

you have the wrong closure syntax

test("hello", {(name: String) in 
    println("callback")
})

或

test("hello", {
   println("callback: \($0)")
})

或

test("hello") {(name: String) in 
    println("callback")
}

或

test("hello") {
   println("callback: \($0)")
}

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