pulkitkumar’s gists

pulkitkumar / Question.md

Last active October 25, 2019 09:26

Interview test question.

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 / handle_network_error.go

Created August 13, 2018 09:51

Handling Network error


	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.go

Last active August 13, 2018 11:32

Network Error

	// 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 / error_handling.go

Last active August 13, 2018 07:06

Simple error handling

	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 / user_pointer_return_main.go

Created August 10, 2018 12:38

Main function using a function that returns a pointer.

	type User struct {
	Name string
	Email string
	}

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

pulkitkumar / value_sharing.go

Last active August 10, 2018 12:50

GoLang Value Sharing

	package main

	import (
	"net/http"

	"github.com/pkg/errors"
	)

	type User struct {
	Name string

pulkitkumar / return_address_of_val.go

Last active August 10, 2018 12:38

	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 / returning_struct.go

Last active August 7, 2018 03:01

	package user

	import (
	"net/http"

	"github.com/pkg/errors"
	)

	type User struct {
	Name string

pulkitkumar / golang_semantics.go

Created August 6, 2018 18:13

GoLang Semantics

	package user

	import (
	"io"
	)

	type User struct {
	Name string
	Email string
	}

pulkitkumar / oop_semantics.go

Last active August 7, 2018 02:21

OOP Semantics

	package user

	import (
	"io"
	)

	type User struct {
	Name string
	Email string
	}

Pulkit Kumar pulkitkumar