Reflection in Swift Swift

Swift's reflection mechanism is implemented based on a struct called Mirror, which has the following properties and methods inside it:

Let Children:children   //child nodes of the object. DisplayStyle:Mirror.DisplayStyle?   object's presentation style let SubjectType:Any.Type   //Object type Func superclassmirror (), Mirror?   The mirror of the object's parent class

Use the sample:

Example 1: The class name of the output entity object, the number of attributes, and the property names and property values of all properties. First define a user class:

User class Class {    var name:string = ""  //Name    var nickname:string?  Nickname    var age:int?   Age    var emails:[string]?  Mail address}

It then creates a user object and obtains information about the object through reflection:

Create a user instance object let User1 = User () user1.name = "Hangge" user1.age = 100user1.emails = ["[Email protected]", "[email protected ] "]         //reflect the user object let Hmirror = Mirror (reflecting:user1)         print (" Object type: \ (hmirror.subjecttype) ") Print (" The number of child elements of the object: \ (HMirror.children.count) ")         print ("---the property names and property values of the child elements of the object as follows---") for case let (label?, value) in Hmirror.children {    Print ("Property: \ (Label)     value: \ (Value)")}

The console output information is as follows: Original: http://www.hangge.com/blog/cache/detail_976.html

Reflection in Swift Swift