Explore the principles of methods with the same name in Golang

Golang is an open source compiled programming language developed by Google to improve programmer productivity. Methods are an important concept in Golang that allow functions to be defined on specific types. These functions are called methods. In Golang, methods can be defined on structures (structs), interfaces (interfaces) and specific types. When defining methods in a structure or interface, you can use methods with the same name. That is, in the same type, you can define multiple methods with the same name but different receiver types.

In order to better understand the mechanism of the method with the same name in Golang, we will illustrate it through specific code examples. First, we define a structure Person and define two methods with the same name ShowInfo, but their receiver types are Person and ## respectively. #*Person:

package main

import "fmt"

type Person struct {
    Name string
    Age  int
}

func (p Person) ShowInfo() {
    fmt.Printf("Name: %s, Age: %d
", p.Name, p.Age)
}

func (p *Person) ShowInfo() {
    fmt.Printf("Name: %s, Age: %d
", p.Name, p.Age)
}

func main() {
    person1 := Person{Name: "Alice", Age: 25}
    person2 := &Person{Name: "Bob", Age: 30}

    person1.ShowInfo()
    person2.ShowInfo()
}

Person structure and two methods with the same name ShowInfo, respectively func (p Person) ShowInfo() and func (p *Person) ShowInfo(). In the main function, we created two person objects person1 and person2, which are Person type and *Person respectively. types, and then called their ShowInfo methods respectively.

person1.ShowInfo(), the value receiver's method will be called, while for person2.ShowInfo(), the pointer receiver's method will be called.

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