函数末尾缺少返回

Question

I have a getQueue() function to create a connection and channel for my Go client to a RabbitMQ instance. I have this code for the aforementioned function:

func getQueue() (*amqp.Connection, *amqp.Channel, *amqp.Queue) {
    conn, err := amqp.Dial("amqp://ayman@localhost:5672")
    fallOnError(err, "Fail to connect")
    ch, err := conn.Channel()
    fallOnError(err, "Fail to open channel")
    q, err := ch.QueueDeclare("hello",
        false, //durable
        false, //autoDelete
        false, //exclusive
        false, //noWait
        nil)   //args
    fallOnError(err, "Fail to delare a queue")

} 

I am getting this error Missing return at end of function for the same. I tried using return keyboard at the end of the function, but then I get this error:

not enough arguments to return
have ()
want (*amqp.Connection, *amqp.Channel, *amqp.Queue)

The source video I was referring did not have any such issues. I am using Ubuntu machine with Go version go1.11.4 linux/amd64. I am using Atom editor with go-lang tools package installed.

EDIT The solution is that I needed 3 parameters to return return conn,ch,&q solved my issue.

Answer 1

the (*amqp.Connection, *amqp.Channel, *amqp.Queue) part of your code says your function returns 3 things, but you don't return anything that is why you get the error. Try adding

return conn, ch, q

to your code that should solve the problem