swift直接赋值与引用赋值都会触发willSet

class baseGoo{

    var isScannerRunning = false

    {

        willSet{

            print(newValue)

        }

    }

    var desp:String = ""

    {

        willSet{

            print(newValue)

        }

    }

    func testFun()->(){

        desp = "bgggg"

    }

}

let base = baseGoo()

base.desp = "egggg"

base.testFun()

swift直接赋值与引用赋值都会触发willSet

原文：https://www.cnblogs.com/feng9exe/p/10430282.html