Explore best practices for indentation in Go

In the Go language, good indentation is the key to code readability. When writing code, a unified indentation style can make the code clearer and easier to understand. This article will explore the best practices for indentation in the Go language and provide specific code examples.

1. Use spaces instead of tabs
   In Go language, it is recommended to use spaces instead of tabs for indentation. This can avoid typesetting problems caused by inconsistent tab widths in different editors.
2. Number of spaces for indentation
   Go language officially recommends using 4 spaces as the number of spaces for indentation. This allows the code to be displayed consistently in different editors and helps the hierarchical structure of the code block to be clear.
3. Indentation in control statements
   In control statements (such as if statements, for loops, switch statements, etc.), code blocks should be indented one level, for example:

packagemain

import "fmt"

func main() {
    for i := 0; i < 5; i {
        if i%2 == 0 {
            fmt.Println("Even number:", i)
        } else {
            fmt.Println("Odd number:", i)
        }
    }
}

4. Indentation inside the function
   In the code block inside the function, 4 spaces are also used for indentation to ensure the readability and clear hierarchy of the code block, for example:

package main

import "fmt"

func add(a, b int) int {
    return a b
}

func main() {
    sum := add(3, 5)
    fmt.Println("3 5 =", sum)
}

5. Indentation of structures and methods
   When defining structures and methods, you also need to pay attention to the unified indentation style, for example:

package main

import "fmt"

type Person struct {
    Name string
    Age int
}

func (p *Person) SayHello() {
    fmt.Printf("Hello, my name is %s and I am %d years old.
", p.Name, p.Age)
}

func main() {
    p := &Person{Name: "Alice", Age: 25}
    p.SayHello()
}

Through the above examples, we can see that the best practice for indentation in the Go language is to use 4 spaces as the number of indented spaces to keep the hierarchical structure of the code block clear and unified. A good indentation style not only helps others read and understand the code, but also improves your own coding efficiency and code quality. Therefore, in daily code writing, we should always follow unified indentation specifications to improve the maintainability and readability of the code.

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