Tech Tutorial - hackajob Insider

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.

ReactNative

How to Create a Launch Screen & Icons

Whilst we seem to have multiple tutorials available on our blog that detail how to develop a brand new app from scratch, we feel it’s important to take some additional time and learn what to do with an app after it’s been created; such as creating a launch screen and configuring launch icons.

Python

Creating a Flask App with SQLAlchemy, PostgreSQL, and Alembic

Flask is one of the most popular web frameworks for Python. A key contrast between Flask and Django (the other framework) is that the latter comes with several out-of-the-box tools that make configuration much quicker.

ReactNative

Using Custom Fonts in React Native

Follow along and learn how to add Custom Fonts to an existing React Native project.

Java

Collectors in Java 8

In our previous Java 8 article, we spoke about the benefits of the Collection API. In today’s write-up, we’ll be taking a closer look at Collectors and how to use them in Java 8.

ReactNative

A Brief Introduction to React Native Hooks

If you’ve been keeping up with all-things React Native, you’re likely to have heard about ‘hooks’. And in all honesty, there’s a big hype about about them.

Python

How to Use Inbuilt Modules in Python

At hackajob HQ, our internal engineers often debate which coding languages are best and for our back-end team, Python is a subject that comes up regularly. In fact, they believe that Python’s inbuilt modules make their lives as programmers so much easier...

Java

The Benefits of the Collection API in Java 8: Part 2

In part one of this article, we covered the ‘forEach’ method, the ‘Collection.removeIf’ method, the ‘Iterator.forEachRemaining’ method and the ‘SplitIterator’ interface. For part two, we’ll be looking at the improvements made on both the ‘List’ and ‘Map’ interfaces.

ReactNative

Creating a Movie-Themed List App: Part 2

Welcome back to the second part of our movie-themed list app tutorial. If you missed what we worked on last time, make sure to take a look before continuing...

ReactNative

Creating a Movie-themed List App: Part I

Today we’re going to be building a fully functional ‘movie-themed’ app. Using some concepts shown in our previous tutorials such as Lists, Redux, React Navigation and Swipe buttons, we’ll be implementing this app in three parts:

ReactNative

How to Create a Progress Indicator using React Native

Probably one of the most important parts of any app, a Progress Indicator is integral to the overall user experience.

Java

The Benefits of the Collection API in Java 8: Part 1

Java 8 has made some significant improvements to the Collection API and in part 1 of this article, we’ve decided to jump right in.

Java

How to use the DateTime API in Java 8: Part 2

Following on from our previous tutorial, today we’re going full steam ahead with part 2, this time focusing on ‘ZonedDateTime’.

ReactNative

Redux for React Native

When implementing an app, it’s easy enough to manage some states if the app in question is simple to manage or is a single-pager, but when adding some layers, screens and generally more complex elements, the states can start to get out of hand or become too complex to stay ‘integer’.