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Ranges

by Adam D. Ruppe | May 2014 | Cookbooks Open Source

This article by Adam D. Ruppe, the author of the book D Cookbook, goes into the details of an artefact central to the Phobos standard library with a little core language support: ranges. Ranges are user-defined objects used to build iterators over a collection of items. We will concentrate more on sorting and searching ranges, and using functional tools to query data.

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A/B Testing – Statistical Experiments for the Web

by Eric Rochester | May 2014 | Architecture & Analysis Open Source

In this article by Eric Rochester, author of Mastering Clojure Data Analysis, we will learn to define, conduct, and analyze A/B testing

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Virtual Machine Design

by Brian Bolander Christopher Kusek | May 2014 | Enterprise Articles

In this article, by Christopher Kusek and Brian Bolander, the author of vSphere Design Best Practices, you will learn the concepts of the virtual machines themselves.

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Running our first web application

by Filippe Costa Spolti | May 2014 | Open Source

This article by Filippe Costa Spolti, the author of WildFly: New Features, will describe the activities that need to be performed, and configuration that needs to be done, on the server to execute the deployment of a simple application that will be used in this article to illustrate a basic deployment. This application will be used to accomplish a few more settings, such as context root and virtual host. Also, I will describe a little about deployment into a single standalone server and, in some server instances, running in the domain mode

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An Introduction to the Terminal

by Jay LaCroix | May 2014 | Open Source

In this article by Jay LaCroix, the author of the book "Linux Mint Essentials", has discussed about the importance and usage of the terminal. Mint is an incredibly rich experience, and it may seem that the developers have thought of everything and included a graphical application to configure just about anything you can think of. However, for those who aspire to be an administrator of Linux systems or just want to achieve advanced skills, learning shell commands is definitely recommended. For some tasks, executing commands can actually save time. In this article, we'll learn the basics of the Linux shell and commands related to it.

In this article, we will discuss the following topics:

  • Why should we use the terminal?
  • Accessing the shell
  • Executing commands
  • Navigating the filesystem
  • Managing files
  • The nano text editor
  • Reading manual pages with the man command
  • Searching for files
  • Using the watch command
  • Introduction to scripting
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Data Warehouse Design

by Reza Rad | May 2014 | Beginner's Guides Enterprise Articles

This article by Reza Rad, the author of Microsoft SQL Server 2014 Business Intelligence Development Beginner's Guide, is about one of the hot topics in most of the job markets around the world—Business Intelligence (BI).

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Updating data in the background

by Dimitris Tavlikos | May 2014 | Cookbooks Open Source

In this article, written by Dimitris Tavlikos, the author of iOS Development with Xamarin Cookbook, we will learn how to make use of iOS 7's background fetch feature. This feature automatically wakes up the app at system-managed intervals, giving it a specific amount of time to retrieve data and update the UI.

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Continuous Integration

by Zdenek Machek | May 2014 | Open Source Web Development

You have code and you have tests, but now you need to take complete advantage of them in order for them to really help you. What you need to do is run these tests, process the results, and then receive a notification if they fail. This is where we are heading in this article by Zdenek Machek, author of PHPUnit Essentials, and there are a few really good open source or free solutions available that can help you.

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Configuring placeholder datastores

by Abhilash GB | May 2014 | Enterprise Articles

In this article, by Abhilash GB, author of the book, Disaster Recovery Using VMware vSphere Replication and vCenter Site Recovery Manager, we will see the steps followed in order to configure a placeholder datastore. For every virtual machine that becomes part of a Protection Group, SRM creates a shadow virtual machine. A placeholder datastore is used to store the files for the shadow virtual machines. The datastore used for this purpose should be accessible to all the hosts in the datacenter/cluster serving the role of a recovery-host. For now, understand that configuring placeholder datastores is an essential step in forming an SRM environment.

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Going Beyond the Basics

by John Ewart | May 2014 | Networking & Telephony Open Source

In this article by John Ewart, author of Managing Windows Servers with Chef, we learn various aspects about Chef's language and also learn to handle multiple platforms.

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Sending Data to Google Docs

by Marco Schwartz | May 2014 | Networking & Telephony Open Source

In this article by Marco Schwartz, author of Internet of Things with the Arduino Yún, we will discuss about sending the data to a Google Docs spreadsheet so that it can be accessed remotely from any web browser or from the Google Docs mobile app, and calculate the energy consumption and some other useful data such as the total energy cost of the device connected to your project.

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Adding a Geolocation Trigger to the Salesforce Account Object

by Stephen Moss | May 2014 | Enterprise Articles

This article has been written by Stephen Moss, the author of Force.com Development Blueprints. You might have noticed that since the Winter '13 release, Salesforce offers a custom field type of geolocation. This field can be used to specify a location by its latitude and longitude. However, the standard Salesforce user interface doesn't provide a great deal of support for filling these fields in with useful values.

Fortunately, with a little bit of Apex code, we can add a trigger to the Salesforce Account Object to automatically geolocate an address when an account is saved or updated.

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Optimizing Magento Performance — Using HHVM

by Mathieu Nayrolles | May 2014 | e-Commerce Open Source Web Development

This article is written by Mathieu Nayrolles, the author of Magento Performance Site Optimization. HipHop Virtual Machine (HHVM) is the cornerstone of the PHP processing stack of Facebook and is currently able to increase the number of requests handle by a server by 9. It is open source and you can download it on GitHub.

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Building a Simple Blog

by Andrew Burgess | May 2014 | Open Source

In this article, by Andrew Burgess, the author of the book Backbone.js Blueprints, we're going to begin by assuming that your experience in Backbone is very minimal; in fact, even if you've never used Backbone before, you should still be able to follow along just fine. The application we're going to build in this article is a very simple blog. As blogs go, it's going to have very few features; there will be posts that viewers can read and make comments on. However, it will introduce you to every major feature in the Backbone library, get you comfortable with the vocabulary, and how these features work together in general.

In this article, we'll know how to:

  • Use Backbone's model, collection, and view components
  • Program the server side with Node.js (and Express.js) to create a backend for our Backbone app

So let's get started!

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Saving Data to Create Longer Games

by Jack Donovan | May 2014 | Beginner's Guides Games

This article by Jack Donovan, the author of the book, OUYA Game Development by Example Beginner's Guide, covers implementing long-term skill progression and saving game data.

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