swift 在swift中实现动态运行时对象，类似于javascript

Posted 2021-05-19

//dynamic runtime object
struct OblValue {
    var fn:((inout arg:OblValue) ->())?
    var int:Int?
    var string:String?
    var bool:Bool?
    var list:[OblValue]?
    var map:[String:OblValue]?
}


let f = {(inout arg:OblValue) in arg.int! += 1}

var test = OblValue()
test.int = 7
test.fn = f
print(test.int!)
//7

//closure property can call on itself
test.fn!(arg: &test)
print(test.int!)
//8