swift3 set value for keypath

optimize

//: Playground - noun: a place where people can play

import UIKit

var str = "Hello, playground"


fileprivate func _setDictionary( dict:inout [String: Any], value: Any, forKeys: ArraySlice<String>) {
    guard forKeys.count > 1 else {
        dict[forKeys.first!] = value
        return
    }
    if var subdict = dict[forKeys.first!] as? [String: Any] {
        print("lala")
        _setDictionary(dict: &subdict, value: value, forKeys: forKeys[1..<forKeys.count])
        dict[forKeys.first!] = subdict
    }
}

func setDictionary( dict:inout [String: Any], value: Any, forKey: String) {
    let keypaths = forKey.components(separatedBy: ".")
    
    _setDictionary(dict: &dict, value: value, forKeys: keypaths[0..<keypaths.count])
}

var tester = ["hahah": [
    "id":"123213",
    "fuck": "tsetest"
]] as [String: Any]


setDictionary(dict: &tester, value: "444", forKey: "hahah.id")
print(tester)