What is the naming convention for interfaces in Go language?

Interface naming convention in Go language: start with a capital letter, use the "I" prefix to indicate the interface, and provide a descriptive name, such as IReader to indicate the reader interface.

The naming convention of interfaces in Go language

The naming of interfaces in Go language follows the following rules:

• Use capital letters to start: Interface names start with capital letters, which is consistent with the naming convention of other identifiers in the Go language.
• Use I prefix: In order to clarify the nature of the interface, it is recommended to use the "I" prefix before the interface name. For example, the Reader interface could be named IReader.
• Descriptive name: The interface name should clearly describe the functionality or behavior it represents. For example, if the interface allows reading data, you can name it IDataReader.

Practical Case

Consider the following example:

// 定义一个表示读取器的接口
type IReader interface {
    Read() ([]byte, error)
}

// 定义一个实现 IReader 接口的结构体
type FileReader struct {
    file *os.File
}

// FileReader 实现 Read() 方法
func (f *FileReader) Read() ([]byte, error) {
    return ioutil.ReadAll(f.file)
}

In this example, the IReader interface is in uppercase letters beginning, and use the "I" prefix to indicate the interface. FileReader implements this interface, which also follows the naming convention of the interface.

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