Tech Tutorial - hackajob Insider

How to Track Internet Connection Status with React Native

Ever wondered how to detect an internet connection status of your app via React Native? We know you have which is why we've put together this tech tutorial, and the great news is it's easy to implement.

Tech Tutorial

How to Multithread in Java

As one of the most sought-after topics in Java, we're giving you the inside scoop with this tech tutorial. We'll get you up and running with these and how you can write simple multithreaded programs.

Go

How to Do CRUD Transactions in MongoDB with Go

You asked, we listened and so we're adding more Go tutorials to our blog! We're back with how to do CRUD transactions in Mongo DB with Go. Buckle up, we're about to dive in.

node

How to Handle Events in Node.JS

Want to know more about Events in Node.Js? Of course you do! And as Node.Js is an event-driven architecture, it's definitely a good idea to get a handle on how to use them. If you want to build an application built on this then we've got you covered in this tech tutorial.

C#

All You Need To Know About C# Switch Statements

Since C# was first introduced, the switch statement has been an integral part of it. If you're a developer who works with this language, or even just someone who's interested in it, you may have noticed that there was a lack of flexibility in what we could do with the C# switch. But not anymore!

javascript

An Introduction to JavaScript ES6 Features

ES6 brought in a lot of path-breaking changes to JavaScript. If you're a JavaScript developer or just interested in the language, we're going through some of the new additions in ES6 that have made Javascript more versatile than ever.

Go

How to Write and Test a Rest API (CRUD) with GORM and Gin

Want to know how to do Rest API testing in Go? This simple tech tutorial will show you how, as well as how to use gin and gorm. Find out more here.

OAuth

What The Tech?!: Lifting the Lid on OAuth (Part 2)

We're back with another OAuth tech tutorial. Now we're familiar with resource owners, servers, clients and tokens, let's see how can put it into practice with these two OAuth flows: standard authorisation call flow and implicit authorisation call flow

Tech Articles

How to Sort in Java: Selection, Insertion, and Bubble

Ever wondered how to sort in Java and what it means to select, insert, and bubble? Then we've got you covered in this tech tutorial. Whether you're practising for a whiteboard coding scenario or would like to know just for fun, mastering how to sort will definitely come in handy.

What The Tech

What The Tech?!: Lifting the Lid on OAuth (Part 1)

You might not know it, but you’ve probably used OAuth at least once in your life – especially if you’re a fan of connecting your social media accounts to apps and websites. But you also might not be entirely sure what it means or does....

Tech Tutorial

Implementing Binary Search Trees in Java

Ever wondered how to code a binary search tree? It's easier than you think. Keep reading to find out how we can insert nodes in a binary search tree, perform traversals, and also how to delete nodes. You'll be an expert in no time!

ReactNative

How to Share Messages with React Native

Most apps these days offer a way to share content from their app to another app. Just imagine a world where we didn't share what we've come across - that's right, no links, emails, files or even memes. Weird right?

Java

How to Implement Stacks and Queues in Java

Delve into the fundamental data structures for Java that are stacks, and queues. You’ll find these data structures highly used in Computer Science to implement functionality and logic.

Java

Implementing Linked Lists in Java

If you’re someone who is even remotely into Java, there is no way that you are not familiar with Linked Lists. A vast majority of technical interviews would include at least one question from linked lists and it is one of the most fundamental data structures in Computer Science

kubernetes

How to Manage a Kubernetes cluster state for High Availability

Whether you’ve been using Kubernetes for a while, or you’re still testing it out, it’s more than likely that you’ve come across Kubernetes events before. But what exactly...

ReactNative

How to create a component with gesture recognition in React Native

Wondering if there's an easy way to create a component in your app that can detect the direction of the finger swipe (Swipe Gesture)?

django

Testing your Django Application

When writing any kind of software, it’s crucial to test the code and therefore the application you’ve created.

ReactNative

Getting Started with Expo

If you’re keen to learn all-things React Native (including the types of things you can build), without the need to deal with dependency settings, links and compatibility issues; we recommend giving this tutorial a try.

Java

Concurrency and Improvements in Java 8: Part 2

Discover how to use the CompletableFuture class in Java.

Python

How to Deploy a RESTful Application with CRUD Endpoints

Learn how to deploy a RESTful application with CRUD endpoints.

ReactNative

Using the KeyboardAvoidingView in React Native

This week, we’re going to be learning how to use and implement the KeyboardAvoidingView.

ReactNative

Learn to use Firebase with React Native: Part 3

If you’ve been following along so far, you should have built an app that can operate without an internet connection and is connected with Firebase. In this tutorial, you’ll be working on CRUD operations with Firebase; starting with learning how to insert data.

ReactNative

Learn to use Firebase with React Native: Part 2

In Part 2 of this tutorial, you’ll be working on a connection between your app and Firebase itself.

ReactNative

Learn to use Firebase with React Native

Whilst you can deploy an application using Heroku or various AWS services, at hackajob, believe that Firebase is one of the easiest and most documented platforms to integrate with any app.

Java

Using the Optional Feature in Java 8

At hackajob HQ, one of our favourite features in Java 8 is the Optional Feature. Helping to avoid unexpected errors and write clean code, in today’s article, we’ll be covering it in detail.