How to write golang naming

In Golang, naming rules are very important because they directly affect the reading, writing and maintainability of the code. Therefore, writing good naming in Golang is important, it can make the code easier to read, understand and maintain. This article will introduce the rules and best practices of naming in Golang.

Naming of functions, variables and constants

In Golang, functions, variables and constants should be named using camel case (CamelCase), that is, the first letter of the first word is lowercase, and the others are lowercase. Capitalize the first letter of a word. In addition to this, variables should be named descriptively, clearly expressing their purpose. For example:

func calculateSum(x int, y int) int {
    return x + y
}

var firstName string = "John"
var lastName string = "Doe"

const Pi = 3.14159

Note: It is not recommended to use underscores (_) as variable or function names in Golang, but it is recommended to use camel case naming. However, if you want to implement some special functions, underscores may be used to ignore unnecessary return values.

Structure and type naming

In Golang, structure and type naming should use PascalCase, that is, the first letter of each word should be capitalized. Likewise, structure and type names should be descriptive and clearly indicate their role and characteristics. For example:

type Person struct {
    Name string
    Age int
    Gender string
}

In the above example, we defined a structure type named Person, which contains three fields: Name, Age and Gender. The name directly expresses the role of this type (a "person").

Interface naming

Similar to structure and type names, in Golang, the naming of interfaces should follow PascalCase. At the same time, the interface name should end with "er" to clearly indicate its main function. For example:

type Reader interface {
    Read(p []byte) (n int, err error)
}

type Writer interface {
    Write(p []byte) (n int, err error)
}

type Closer interface {
    Close() error
}

In the above example, we defined three interfaces: Reader, Writer and Closer. These names all end with "er" and clearly express the main role of the interface.

Package name naming

In Golang, the package name should be a short, descriptive name that can clearly indicate the role of the code it contains. It is recommended to use lowercase letters and avoid uppercase letters. For example:

package utils

import "fmt"

func SayHello() {
    fmt.Println("Hello, world!")
}

In the above example, we created a package called utils. This package contains the SayHello function. When this function is called, the "Hello, world!" message will be printed on the console.

Summary

In Golang, naming rules have an extremely important impact on the readability and maintainability of the code. This article explains the rules and best practices for writing good names in Golang. Whether you are writing functions, variables and constants, or defining structures, types and interfaces, you should follow the above naming rules and try to make your code easier to understand, maintain and extend.

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