duanshan5259 2013-12-01 02:57
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如何在golang的结构中将项目添加到数组中

With the code below how do I add an IP struct to the Server struct's ips array?

import (
    "net"
)

type Server struct {
    id int
    ips []net.IP
}

func main() {
    o := 5
    ip := net.ParseIP("127.0.0.1")
    server := Server{o, ??ip??}
}

Do I even have the ips array correct? Is it better to use a pointer?

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  • drbl91357 2013-12-01 04:05
    关注

    A slice literal looks like []net.IP{ip} (or []net.IP{ip1,ip2,ip3...}. Stylistically, struct initializers with names are preferred, so Server{id: o, ips: []net.IP{ip}} is more standard. The whole code sample with those changes:

    package main
    
    import (
        "fmt"
        "net"
    )
    
    type Server struct {
        id  int
        ips []net.IP
    }
    
    func main() {
        o := 5
        ip := net.ParseIP("127.0.0.1")
        server := Server{id: o, ips: []net.IP{ip}}
        fmt.Println(server)
    }
    

    You asked

    Do I even have the ips array correct? Is it better to use a pointer?

    You don't need to use a pointer to a slice. Slices are little structures that contain a pointer, length, and capacity.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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