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Speeding Up Rendering Rails Pages with render_async

Adding new code to Rails controllers can bring a couple of problems with it. Sometimes controller actions get really big, and they tend to do a lot …

JavaScript

Raspberry Pi Open Source Energy Monitoring

The open source OpenEnergyMonitor co-founder Glyn Hudson has been interview over on the official Raspberry Pi Foundation website this week providing …

How to get Google’s artificial intelligence on the Raspberry Pi

I am a heavy user of Raspberry Pis. Every year I build a massive musical lighting setup for Christmas using couple of Pis. During Halloween, I build …

Raspberry Pi Facial Recognition Using AWS Rekognition And Pi-Timolo

Developers, Raspberry Pi enthusiasts and makers that have projects that could benefit from facial recognition might be interested in a new Raspberry …

What is the right way to do asynchronous operations in Redux?

Redux<p>It's understandable why so many newcomers to React+Redux have difficulty wrapping their heads around asynchronous actions. React is simply a …

Straightforward code splitting with React and webpack

Everything seemed perfect until your app size increased too fast …<p>Introduction<p>You’re a big fan of <b>React</b> and even bigger fan of the modern JavaScript …

Typography

AnyCable: Action Cable on steroids — Martian Chronicles

Action Cable is one of the most attractive new features in Rails 5. WebSockets out of the box—sounds pretty cool, doesn’t it?<p>Action Cable shows a …

Your first Progressive Web App on Rails

Discussion of Progressive Web Apps (PWA) is catching fire in the JavaScript community, but amongst Rails developers... not so much.<p>Progressive Web …

Web Development

Wandered.space helps you explore the cool spots all around you

Wandered.space is a service for those moments when you want to explore the area around you, but don’t know where to go.<p>It was created this weekend at TechCrunch’s Disrupt London hackathon by a team of three coworkers from Seattle-based Azuqua. One of them, Skyler Hartle, told me that they were …

Disrupt NY

Docker + Rails 5 + Webpack + React + Redux

An easy template with the minimum you need to start to work with Rails 5 and React!<p># Developing<p>To start the server you only need to run the following …

You Can Now Trigger Your Raspberry Pi-Powered DIY Alexa With A Wake Word

Amazon updated their Alexa sample code on GitHub with a new wake word engine. This means that if you'd like to make your own Amazon Alexa with a …

Raspberry Pi

CREATE ALMOST ANYTHING WITH MATRIX CREATOR - The MagPi Magazine

There are plenty of add-on boards and HATs for the Raspberry Pi that add functionality to the computer, from simple things like LEDs or motor …

Stick PC: Pi Zero USB Dongle - The MagPi Magazine

Stick PC computers are popular at the moment. These computers are the size of a USB dongle that you pop into a monitor. Novaspirit has started a …

Tilegrams: More Human Maps

About a month ago, while plotting demographic data on a US county map, we became frustrated. The data was about employment in the financial industry, …

Maps

d3.unconf: What you can expect

For the third year in a row we are gathering together 100 d3.js practitioners to discuss, share and collaborate at the d3.unconf. The past two years …

Wacom's latest smartpads marry pen and paper with digital notes

Despite the many high-tech devices on display here at IFA, sometimes all you want is a pen and paper to jot down notes or draw a quick sketch. Still, there's no reason not to marry ink and tech, which is the driving idea behind Wacom's latest line of smartpads that let you capture handwritten notes …

Advanced SQL in Rails - Part 1

The more I work with Rails apps, the more I love ActiveRecord. It’s a really elegant abstraction over your data layer, and lets you focus on business …

bigdataanalyticsguide.com

Datum Ipsum: Designing real-time visualizations with realistic placeholder data

<i>tl;dr — I’ve created a tool called</i> <i>Datum Ipsum</i> <i>to enable designers to use realistic data when mocking up data visualizations. Also, this is a written</i> …

Bubble wants to tap users’ social graphs for an on-demand babysitting app

Who would you trust more with your kids: a person sent by a babysitting agency or the sitter who watched your friends’ kids last weekend?<p>Bubble, an on-demand babysitting app (iOS and Android) launching in London today, reckons most people would plump for the second option. So it’s built an app for …

Apps

JavaScript Unit Testing For Beginners

You're reading JavaScript Unit Testing For Beginners, originally posted on Designmodo. If you've enjoyed this post, be sure to follow on Twitter, …

React vs. Angular 2 integration with Rails

Why Github?<p>Most developers already have an account<br>• Link all your contributions to your profile on the biggest social coding platform<br>• All the code for …

Thought Leadership

Design, publish, and share your data

Add beautiful, interactive visualizations into your product<p>Reflect makes it easy to convert your raw data into a successful tool for your business. …

Building an API with Swagger, JSON API and Rails (Part 1)

One of the pain points of building a backend API that serves one or more client Apps is deciding what the response should look like, and then …

Start A Fire

Playing With React and D3

At this point, we can safely say that React is the preferred JavaScript library for building user interfaces. It is used practically everywhere and …

The Beauty Of React Native: Building Your First iOS App With JavaScript (Part 2)

Just like the first part, this article has five sections. Completing each section takes us a step closer to finishing our app.<p>1. Displaying …

Dockerizing a Ruby on Rails Application

Read about the advantages of using Docker and learn how to build and dockerize a Ruby on Rails application that uses PostgreSQL, Redis and …