pulkitkumar

The following interface fetches articles for an id.

interface NetworkApi {
    /*
     * Fetches details of an article of parameter [id] from the network.
     */  
    fun article(id: String) : Single<Article>
}

pulkitkumar

func networkRequest() {
	body, err := makeRequest("url", "GET")
	if err != nil {
		switch err := err.(type) {
		case *NetworkError:
			if err.IsAccessDenied() {
				// handle access denied here.
			} else if err.IsAuthError() {
				// handle auth error here.

pulkitkumar

// Network error, when the status code from a network request is > 400 
type NetworkError struct {
	statusCode int
	Body       string
}

func (n *NetworkError) IsAuthError() bool {
	return n.statusCode == 401
}

pulkitkumar

n, err := io.ReadAtLeast(r, buf, min)
	if err != nil {
		switch err {
		case io.ErrShortBuffer:
			// handle short buffer error
			break
		case io.ErrUnexpectedEOF:
			// handle short buffer error
			break
		default:

pulkitkumar

type User struct {
	Name  string
	Email string
}

func main() {
	var u *User
	u, err := fetchStruct()
	if err == nil {
		modifyEmail(u)

pulkitkumar

package main

import (
	"net/http"

	"github.com/pkg/errors"
)

type User struct {
	Name  string

pulkitkumar

func fetchStruct() (*User, error) {
	var u User
	resp, err := http.Get("url")
	if err != nil {
		return &u, errors.Wrap(err, "network read error")
	}
	u = User{
		Name:  "some data from resp",
		Email: "some data from resp",
	}

pulkitkumar

package user

import (
	"net/http"

	"github.com/pkg/errors"
)

type User struct {
	Name  string

pulkitkumar

package user

import (
	"io"
)

type User struct {
	Name  string
	Email string
}

pulkitkumar

package user

import (
	"io"
)

type User struct {
	Name  string
	Email string
}