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结构体 Struct

Definition​

type authenticationInfo struct {
    username string
    password string
}

Nested Struct​

type Address struct {
    City, State string
}

type Person struct {
    Name    string
    Address Address // 嵌套Address结构体
}

func main() {
    p := Person{
        Name: "Jane Doe",
        Address: Address{
            City:  "Los Angeles",
            State: "CA",
        },
    }

    fmt.Println(p.Name)        // Jane Doe
    fmt.Println(p.Address.City) // Los Angeles
}

Embedded Struct​

type Address struct {
    City, State string
}

type Person struct {
    Name    string
    Address // 嵌入Address结构体
}

func main() {
    p := Person{
        Name: "John Doe",
        Address: Address{
            City:  "New York",
            State: "NY",
        },
    }

    fmt.Println(p.Name)        // John Doe
    fmt.Println(p.City)        // New York (通过嵌入的Address访问)
    fmt.Println(p.Address.City) // New York (通过Address字段访问)
}