iOS / Swift：syntax返回闭包中的自定义对象

Question

I would like to place some JSON obtained asynchronously in an object and return in a closure. My code however is giving an error.

func postToWebSwervice (aString:String,completion:@escaping (_ response:Array<Any>)->(MyObject)){
//get some JSON from web
let myObject = MyObject()
//parse JSON
myObject.title = "Palo Alto"
myObject.temp = 62

DispatchQueue.main.async {//open async
                       completion( myObject )
                    }
}

I am getting an error: 'Cannot convert object of type myObject to closure result type Void (aka ())

I gather you cannot 'return' object. But what would correct syntax be to make it available to calling method upon completion?

Thanks for any suggestions.

Answer 1

Replace Array<Any> with MyObject (you need to change your completion block syntax like thi)

func postToWebSwervice (aString:String,completion:@escaping (_ response: MyObject)-> Void){
    //get some JSON from web
    let myObject = MyObject()
    //parse JSON
    myObject.title = "Palo Alto"
    myObject.temp = 62

    DispatchQueue.main.async {//open async
        completion( myObject )
    }
}