Go quick-12-method

This is a creation in Article, where the information may have evolved or changed.

Directory

• • Method
    • Concept
    • Define Method
    • Use Method
    • To add a method to a type alias

Summary

Receiver, defining methods, using methods (2 forms), adding methods for type aliases

Method

Concept

• A method is a function that contains a hidden parameter (receiver).
• Method can only be defined for a type in the same package
• ReceiverRefers to the subject of method dependencies
• ReceiverCan be a value or a pointer
• No method overloads exist

Define Method

typestruct {    string}//为 person 结构定义了一个 methodfuncprint() {    fmt.Println("person")}

The above "P" is receiver, the body of the method

Note that because Go has no method overloads, the following methods are illegal

funcprint() {    fmt.Println("person")}funcprintint) {    fmt.Println("person")}

Use Method

The first way

"Jane"}p.print()

The second way

"Jane"}person.print(p)

To add a method to a type alias

type  number int  func  (n number) Add10 () number {return  n * ten }var  N number =  5  var  m = n.add10 () fmt. Println ( "n" , N) //n 5  FMT. Println ( "M" , m) //m