Swift KVC Assignment

1 when defining a model property, if it is an object, it is usually optional (create it when needed, avoid writing the constructor, simplify the code)

2 If it is a basic data type, cannot be set to optional, and to set the initial value, otherwise KVC will crash

3 You need to call Super.init () before using the KVC method to ensure that the object instantiation is complete

4 You must add @objcmembers before the class (or add @objc before each property), otherwise KVC will crash

Import UIKit

@objcMembers class Person:nsobject {

var name:string?

The base data type must be required and you need to set a default value

var age:int = 0

Init (dict: [String:anyobject]) {

Super.init ()

Setvaluesforkeys (Dict)

}

}

Swift KVC Assignment