splitted type and server funcs and added docs

import "errors"

type Args struct {

	A, B int

}

type Quotient struct {

	Quo, Rem int

}

type Arith int

// Multiply is an rpc multiplication.

func (t *Arith) Multiply(args *Args, reply *int) error {

	*reply = args.A * args.B

	return nil

}

// Divide provides a rpc division resulting in a quotient and reminder.

func (t *Arith) Divide(args *Args, quo *Quotient) error {

	if args.B == 0 {

		return errors.New("divide by zero")

package rpcexamplelib

// Args is a wrapper for calling rpcs

type Args struct {

	A, B int

}

// Quotient is the result of Divide

type Quotient struct {

	Quo, Rem int

}

// Arith is the interface type

type Arith int