golang method assignment

Go language is a language that supports object-oriented programming. In object-oriented programming, an object contains properties and methods. When we define a structure, we can not only define attribute types, but also assign methods to the structure to give the structure more functions. This article will introduce how to assign values ​​to structures in Go language.

Define the structure

In the Go language, we use the keyword type to define the structure. For example, we define a student structure:

type Student struct {
    Name    string
    Age     int
    Address string
    Phone   string
}

This structure contains the student's name, age, address and phone number.

Define method

The format of the method is as follows:

func (s Student) methodName() {
    // 方法实现
}

Among them, func represents the function definition, and s Student in parentheses indicates that this method belongs to the Student structure; methodName is the method name , the method name should start with a capital letter, indicating that it is a public method; the implementation content of the method is in curly brackets.

Now, we define a method display() in the student structure to display student information:

func (s Student) display() {
    fmt.Printf("Name: %s
Age: %d
Address: %s
Phone: %s
", s.Name, s.Age, s.Address, s.Phone)
}

In this method, we use the Printf function to output the student's name, age, and address and phone number. Note that the properties of the structure can be used directly in the method.

Assigning methods to structures

After we define the structure and methods, we can assign the methods to the structure. In Go language, you can use the type keyword and func keyword to define methods for structure types. For example, we assign the display() method to the Student structure:

type Student struct {
    Name    string
    Age     int
    Address string
    Phone   string
}

func (s Student) display() {
    fmt.Printf("Name: %s
Age: %d
Address: %s
Phone: %s
", s.Name, s.Age, s.Address, s.Phone)
}

The code here is the same as the previous code, except that the structure definition and method definition are merged together. Now, we create a variable s of type Student and call its display() method:

s := Student{"Tom", 18, "Beijing, China", "123456789"}
s.display()

The code here creates a student object named s and calls its display() method. When running this line of code, the console will output the following:

Name: Tom
Age: 18
Address: Beijing, China
Phone: 123456789

Structure methods can access the properties of the structure, which makes it easier for them to process the structure's data. I hope this article can give you a deeper understanding of the concept and application of Golang method assignment.

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