如何初始化嵌套结构? [英] How to initialize a nested struct?

问题描述

我不知道如何初始化嵌套结构.在此处查找示例: http://play.golang.org/p/NL6VXdHrjh

I cannot figure out how to initialize a nested struct. Find an example here: http://play.golang.org/p/NL6VXdHrjh

package main

type Configuration struct {
    Val   string
    Proxy struct {
        Address string
        Port    string
    }
}

func main() {

    c := &Configuration{
        Val: "test",
        Proxy: {
            Address: "addr",
            Port:    "80",
        }
    }

}

推荐答案

那么，是否有不使Proxy成为其自身结构的特定原因?

Well, any specific reason to not make Proxy its own struct?

无论如何，您有2个选择:

Anyway you have 2 options:

正确的方法是，只需将代理移动到其自己的结构中，例如:

The proper way, simply move proxy to its own struct, for example:

type Configuration struct {
    Val string
    Proxy Proxy
}

type Proxy struct {
    Address string
    Port    string
}

func main() {

    c := &Configuration{
        Val: "test",
        Proxy: Proxy{
            Address: "addr",
            Port:    "port",
        },
    }
    fmt.Println(c)
    fmt.Println(c.Proxy.Address)
}

不太恰当和丑陋的方式，但仍然有效:

The less proper and ugly way but still works:

c := &Configuration{
    Val: "test",
    Proxy: struct {
        Address string
        Port    string
    }{
        Address: "addr",
        Port:    "80",
    },
}

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