Question

我试图在每次名单已经在列表中时重新启动此循环，这段代码显然只会检查一次。有没有办法让循环重新开始？谢谢！

for _, client := range list.clients {
//for i := 0; i < len(list.clients); i++ {
    if(client.name==name){
        connection.Write([]byte("Name already exists please try another one:\n"))
        bytesRead, _ := connection.Read(reply)
            name = string(reply[0:bytesRead])
        name = strings.TrimSuffix(name, "\n")

    }
}

Answer 1

将其包裹在另一个for：

中

Loop:
    for {
        for _, client := range list.clients {
            if client.name == name {
                connection.Write([]byte("Name already exists please try another one:\n"))
                bytesRead, _ := connection.Read(reply)
                name = string(reply[0:bytesRead])
                name = strings.TrimSuffix(name, "\n")
                continue Loop // Start over
            }
        }
        break // Got through it; we're done
    }

您也可以重置索引。 range可能是错误的工具：

for i := 0; i < len(list.clients); i++ {
    client := list.clients[i]
    if client.name == name {
        connection.Write([]byte("Name already exists please try another one:\n"))
        bytesRead, _ := connection.Read(reply)
        name = string(reply[0:bytesRead])
        name = strings.TrimSuffix(name, "\n")
        i = -1 // Start again
    }
}

Golang：for循环使用范围条件重新启动

1 个答案: