How does golang function naming follow naming conventions and style guidelines?

Function naming in Go follows conventions and style guides to ensure consistency, clarity, and purpose in function names. Naming conventions include prefixes, verb-noun, Pascal nomenclature, while style guides emphasize brevity (20-30 characters), capital letters, avoidance of underscores, and abbreviations. In the actual case, the error handling function follows the naming convention (GetUserDetails) and style guide (short, uppercase), and the type conversion function also follows similar principles (ConvertToInt).

Go function naming: follow conventions and style guides

In Go programming, function naming is crucial because it is straightforward Affects code readability and maintainability. Following naming conventions and style guides ensures consistency, clarity, and purpose in function names.

Naming convention

Prefix

Add a prefix to identify the package or module to which the function belongs. For example:

func myPackageFunc() {
    // ...
}

verb-noun

Use a combination of verb and noun to describe the behavior and effect of the function. For example:

func FindUserByID(id string) (*User, error) {
    // ...
}

Pascal nomenclature

Using Pascal nomenclature, the first letter of each word is capitalized. For example:

func ParseStringToInt(s string) (int, error) {
    // ...
}

Style Guide

Length

Function names should be short and informative. Typically, function names should be limited to 20-30 characters in length.

uppercase letters

Avoid using ALL CAPS names.

Underscore

Do not use underscores to separate words unless it is an explicit Go convention (for example, _ in a variable name).

Abbreviations

Try to avoid using abbreviations unless they are well-known (e.g., URL).

Practical case

Error handling

func GetUserDetails(id string) (*UserDetails, error) {
    // 查询用户详细信息
    details, err := db.QueryUserDetails(id)
    if err != nil {
        return nil, fmt.Errorf("error getting user details: %w", err)
    }
    return details, nil
}

Type conversion

func ConvertToInt(s string) (int, error) {
    // 将字符串转换为整数
    number, err := strconv.Atoi(s)
    if err != nil {
        return 0, fmt.Errorf("error converting string to integer: %w", err)
    }
    return number, nil
}

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