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In this article we will build an Accordion using HTML5 and a dash of JavaScript. The Accordion widget is quite useful when we want to present just a teaser at first and if this interests the user, we provide detailed information. Basically we have content which collapses or starts out as such allowing the user to expand and get into ...

A couple of years ago, I found a few methods in my Rails application that were called several thousand times and accounted for more than 30 percent of my website’s page load time. Each of these methods were strictly focused on file pathnames. Along with that, I came across a blog post that said “Rust to the Rescue of Ruby,” ...

Investigating how to use shared volumes with Docker (Swarm), I decided to take a look at NFS volumes, since this is probably the most used on premises way to share folders. With Docker, you have 3 different syntaxes to mount NFS volumes : simple container (via docker volume create + docker run) single service (via docker service create) complete stack ...

Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! Read more to learn why a metrics-oriented framework is a critical piece of a DevOps philosophy. Metrics-oriented thinking is key to continuous improvement – and a core tenant of any agile or DevOps philosophy. Metrics are factual and once ...

This post explains how to work around a change in how Python string formatting works for numpy arrays between Python 2 and Python 3. I’ve been going through Kevin Markham‘s scikit-learn Jupyter notebooks and ran into a problem on the Cross Validation one, which was throwing this error when attempting to print the KFold example: Iteration Training set observations Testing ...

Docker makes it easy for developers to package up and push out application changes, and spin up run-time environments on their own. Maybe too easy. With Docker, developers can make their own decisions on how to configure and package applications. But this also means that they can make simple but dangerous mistakes that will leave the system unsafe without anyone ...

1. Introduction In this article, we will look at how to capture images as well as video from user’s webcam. There have been several iterations to enable access to devices from JavaScript. Starting from special attributes for existing input tags to getUserMedia part of the WebRTC APIs. We will look at how to use these and leverage them for accessing ...

Businesses are constantly looking for new ways to communicate with clients. Business owners spend lots of time, effort, and money on adapting their own websites for mobile devices. With the intensive growth of mobile device usage, having a mobile-friendly business website is crucial. A recent study conducted by Statista shows that the mobile phone internet user penetration will be 63.4 ...

Containers are one of the best ways to deploy Node.js applications these days. In this post, you will learn how you can containerize your Node.js applications using Docker. First, we will create a simple web application in Node.js, then we’ll build the Docker image and run it. You’ll also learn a few tips and tricks to make development easier and ...