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Creating Advanced Active Record DB Queries with Arel

If you’ve used Rails, you’ve likely used Active Record as a way to access and record database transactions in a more Ruby-like manner. Active Record goes a long way in simplifying the use of a database. But more then that, it’s designed in such a way that we don’t have to worry about the particulars for working with specific databases. ...

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Top 10 Web Code Geeks posts for 2016

2016 is coming to its end, and it has definitely been a great year for Web Code Geeks. Our community continues to rapidly grow and attract web developers all over the world. Thank you for your support so far! Our insiders list has also exploded, and now our weekly newsletter reaches more than 40,000 web developers. Make sure to hop ...

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AngularJs 2 Series: Binding The Host Element With @HostBinding

Introduction In one of the previous article Build Your Own Directive, I showed you how to build or develop a custom highlight attribute that highlights the text background with yellow. We made use of Renderer service to render an element with the background style color to yellow. The element reference (which contained the text) was obtained using ElementRef type. We ...

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HTML5 Keygen Element Example

The HTML5 keygen element is used to generate client certificate which can be used for authentication. In this example we are going to demystify the HTML5 keygen element. For this example we will use: A computer with a modern browser installed. notepad++. 1. Getting Started The keygen tag is used to generate a key-pair. The public key will be sent ...

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Continuous Deployment of Docker Apps to Kubernetes

In the first post of this series, we introduced using Kubernetes for deployments. In this post, we’ll get started with integrating Codeship into the workflow. Given a functioning Kubernetes Deployment (remember our discussion from the last post about the difference between deployment and Kubernetes’ Deployment), how do we integrate it into our Codeship workflow? The answer to this question ultimately ...

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Testing Code Examples in Documentation

In my last post, I covered how to improve the written component of your documentation with automated spell-checking and suggestions for better writing. In this post, I’ll cover the code component of good documentation; trying an example and finding it doesn’t work is a sure-fire way to annoy a reader. The techniques for testing code fall into two distinct camps, ...

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AngularJs 2 Series: Custom Event Binding

Introduction In one of the previous article on databinding, I demonstrated the use of native event binding like button click. Here in this article I will show you how to create your own custom event and listen on to it. We will create a component with a custom event that will emit or send some data and another component will ...

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Docker Remove Container Example

This example will show how to remove Docker containers, that is, instances of images. For this, we will be using the rm command, along with other options, for making the removal more flexible. For this example, Linux Mint 18 and Docker version 1.12.1 have been used.           Tip You may skip Docker installation and jump directly ...

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AngularJs 2 Series: Custom Property Binding

Introduction In one of the previous article on databinding, I demonstrated the use of native property and event binding. Here I will show you how you can achieve custom property binding. Custom property binding is all about creating your own property and binding a value to it from outside or another component. We will create a component with a custom ...

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HTML Email Validation Example

Sometimes we might have to create web apps that collect user data e.g names, date of birth, username, emails or even the user phone number. It is one thing to collect user data, its another thing to make sure that the user has entered valid information. For example we should always check durning user registration or login, if the email ...

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