Swift 变量名

问题描述

是否有可能找出变量名，我叫它什么，而变量有一个值?

Is it possible to find out the variable name, what I called it, while the variable has a value?

所以我的意思是:

var varName: Int
...
if ((varName == "varName") && (varName == 6)) {
...
}

这可能吗?

---

Is this possible?

推荐答案

看看下面 Swift 示例中的 Reflection

take a look about Reflection in Swift example below

struct Car  {

let type: CarType
let name: String

init(_ type: CarType, name: String) {
    self.type = type
    self.name = name
}
}

enum CarType {
    case Sport
    case Economics
}

let bmw = Car(CarType.Sport, name: "BMW")

let bmwMirror = Mirror(reflecting: bmw)

let children = bmwMirror.children

print("car properties: \(children.count)") //2

var generator = children.generate()
let type = generator.next()
print(type!.label) // type Optional
print(type!.value) //Sport
let name = generator.next()
print(name!.label) // name Optional
print(name!.value) //BMW

注意:我在 Swift 1.2 中使用 Swift 2.0 Xcode beta 7 使用 let bmwMirror = reflect(bmw)并且您可以访问属性 bmwMirror.[indexOfProperty].1(.value or label)

Note : I am using Swift 2.0 Xcode beta 7 in Swift 1.2 use let bmwMirror = reflect(bmw)and you can access the properties bmwMirror.[indexOfProperty].1(.value or label)

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