戈朗 : for loop with range condition to restart

Question

每次列表中已经有一个名字时，我都试图让这个循环重新开始，这段代码显然只会检查一次。有没有办法让循环从头开始？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

将其包装在另一个 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
    }

您也可以只重置索引。 range 可能是这里的错误工具:

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
    }
}