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A Problem With Python’s Code Blocks

So, this post was going to be completely different. I was going to do a post on how you can restrict the creation and scoping of certain objects using Python’s with code blocks. Unfortunately, with doesn’t restrict scope. Take the following code sample: with someManager() as i: # do something with i print(i) This will, unfortunately, work and print whatever ...

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ActionCable: The Missing Guide

ActionCable was introduced to Rails as of version 5. It allows you to create pub/sub WebSocket connections in your Rails application, which brings live updates to your user experience. ActionCable upgrades an HTTP connection between the server and client to a WebSocket. Some of the benefits of a WebSocket is that the amount of data transferred per transmission is considerably ...

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Docker Ansible Example

When one uses Docker for a while, after the excitement of how amazing is Docker is gone, he starts realizing that building and pulling images, and creating containers by hand, may not be the best way for managing Docker applications and services. Luckily, Ansible, one of the most powerful IT Automation tool, comes to the rescue here. Ansible offers modules for ...

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Security in the Microservices Paradigm

One of the least glamorous aspects of implementing a Microservices architecture is the security. It’s not fun or cool when compared to things like the circuit breaker or service discovery, yet it is a critical piece of the ecosystem especially in an enterprise setting. I’m working on a large Microservices project for a healthcare enterprise on the East Coast. One ...

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Docker Secrets Management

I’m sure we’ve all been there. That moment when you realize that important and sensitive access details have leaked online into a public space and potentially rendered your services to unrequited access. With the ever-growing amount of services we depend on for our development stack, the number of sensitive details to remember and track has also increased. To cope with ...

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The Ultimate CSS3 Flexbox Tutorial for 2017

With the new CSS3 Flexbox box model, you can now write more concise and maintainable code for various common layout tasks — such as vertical centering, taking up remaining space, or simpler grids. After this tutorial, you’ll be able to use Flexbox and understand exactly how it works. 1.  Introducing Flexbox The CSS3 Flexbox spec contains quite a few properties. ...

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Bootstrap Datepicker Example

In today’s article, we will be looking into how to get started quickly with Bootstrap’s datepicker, and explore a few of the different options, methods and events that are available. To follow this example, all you need is a text editor; I will be using Notepad++. 1. Introduction 1.1. Date what? If you’re building a website that at some stage, ...

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Principles of Effective Testing with Capybara

Currently the world of integration testing is overwhelmed with complexity. Industry standards require adding more layers of abstraction with tools like Cucumber, SitePrism, and others, and as a result it becomes more difficult and tedious for a developer to write a simple test. But as any other part of the codebase, testing scenarios should be simple and fun. They should ...

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An Introduction to GraphQL via the GitHub API

RESTful, JSON-delivering APIs are today’s default choice when building an API. However, there’s a new API kid on the block that’s generating considerable attention: GraphQL. GraphQL is an entirely new way to consume and build APIs. Done right, you can build wonderfully tight integrations that aren’t possible with REST APIs. Today, we’ll get firsthand exposure to GraphQL via the GitHub ...

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