Code style specifications for golang functions

Go's functional code style specification follows best practices to ensure code readability and maintainability, including: function names begin with a lowercase letter and words are separated by underscores. Parameter types precede parameter names, separated by commas. The return type is declared before the function body. Code snippets are short and readable, separated by blank lines. Write clear comments explaining the intent of the code. Variable names start with a lowercase letter and are named in camel case. Constant names are in all capital letters, with underscores separating words. Interface names start with the "I" prefix.

Go Functional Code Style Specification

The Go language provides a clear and concise syntax that encourages writing code that is easy to understand and maintain. Following a consistent coding style guideline is critical to ensuring code is readable and maintainable. This article introduces the best practices of Go functional coding style and provides a practical case.

Function declaration

• Function names should start with a lowercase letter and use underscores to separate words.
• Parameter types should be declared before parameter names and separated by commas.
• The return value type should be declared before the function body.

Code Snippets

• Each code snippet should be kept short and readable, avoid exceeding 10 lines.
• Use blank lines to separate related code segments to improve readability.
• Write clear and descriptive comments that explain the intent of the code.

Naming Convention

• Variable names should start with a lowercase letter and use camelCase notation.
• Constant names should be in all uppercase letters, with underscores separating words.
• Interface names should start with the "I" prefix.

Practical case

package main

import (
    "fmt"
    "strconv"
)

// convertToInt converts a string to an integer.
func convertToInt(s string) (int, error) {
    // Check if the string is empty.
    if s == "" {
        return 0, fmt.Errorf("empty string")
    }

    // Convert the string to an integer.
    i, err := strconv.Atoi(s)
    if err != nil {
        return 0, fmt.Errorf("invalid number: %v", err)
    }

    // Return the integer.
    return i, nil
}

func main() {
    // Convert a string to an integer.
    i, err := convertToInt("123")
    if err != nil {
        fmt.Println(err)
        return
    }

    // Print the integer.
    fmt.Println(i) // Output: 123
}

In this example, we define a function named convertToInt, which converts a string Convert to an integer. Functions follow the Go function coding style guide, including:

• Clear and concise function declaration
• Short and readable function body
• Descriptive code comments
• Use recommended naming conventions

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