CodeIgniter and Objects

Objects confused me when I started to use CodeIgniter. I came to CodeIgniter via PHP 4, which is a procedural language, not really an Object-Oriented (OO) language. I duly looked up objects and methods, properties and inheritance, and encapsulation, but my early attempts to write CI code were plagued by the error message "Call to a member function on a non-object". I saw it so often that I was thinking of having it printed on a t-shirt: it has a mysteriously libertarian, anarchist tone, and I could see myself wearing it at a modern art exhibition.

This is the geek article. It describes the way CodeIgniter actually works, 'under the hood'. If you are new to CI, you may want to skip it. However, sooner or later, you may want to understand why things happen in certain ways—as opposed to just knowing that they do.

Code Analysis and Debugging Tools in Microsoft Dynamics NAV 2009

In the previous article, Microsoft Dynamics NAV 2009 Development Tools, we gained an overall view of NAV as an application software system.

The goal of this article by David Studebaker, author of Programming Microsoft Dynamics NAV 2009, is to learn about many of the debugging tools and techniques available to the NAV developer. As it has been pointed out, "Without programmers, there are no bugs." As we are all developers and therefore a primary source of bugs, we need to be knowledgeable about the tools we can use to stamp out those bugs. Fortunately, NAV has a good arsenal of such tools.

Cocos2d: Uses of Box2D Physics Engine

For years, physics engines have been used in video games to add a sense of realism to the action onscreen. In many games, physics plays a crucial role within the gameplay. Cocos2d comes bundled with two popular 2D physics engines: Box2D and Chipmunk. In this article, we will explain the most common uses of physics in games using Box2D as our engine of choice.

In this article by Nathan Burba, author of Cocos2d for iPhone 1 Game Development Cookbook, we will cover the following points:

• Box2D setup and debug drawing
• Creating collision response routines
• Using different shapes
• Dragging and collision filtering

Cocos2d for iPhone: Handling Accelerometer Input and Detecting Collisions

Cocos2d for iPhone is a framework for building 2D games, applications, presentations, demos, and more. It was originally made for Python and then ported to IPhone by Ricardo Quesada as an open source project with the MIT license.

In the previous article by Pablo Ruiz, author of the book Cocos2d for iPhone 0.99 Beginner's Guide, we saw how to create new scenes and move through them, and build the base for an action game.

In this article, we will see how to handle accelerometer input and detect collisions.

Cocoa and Objective-C: Handling Events

The trackpad is becoming more popular as an input device as all new Apple laptops now have a trackpad. Even desktop Macs have trackpad support with the addition of the Magic Trackpad. Adding gestures to your Cocoa application to support the trackpad is not difficult. The recipes in this article by Jeff Hawkins, author of Cocoa and Objective-C Cookbook, will show you how to add the three most popular gestures to your application. Specifically we will cover:

• Interpreting the pinch gesture
• Interpreting the swipe gesture
• Interpreting the rotate gesture
• Handling special keys
• Working with NSResponder
• Application-wide notifications with NotificationCenter

CMS Made Simple: Application of User-Defined Tags

This article will help us explore a few applications of tags. Most of these recipes are User-Defined Tags, because the capabilities of the User-Defined Tags are nearly identical to the file type of a tag.

In this article by Samuel Goldstein, author of CMS Made Simple Development Cookbook, we will cover:

• Displaying the User's IP address from a User-Defined Tag
• Using the current content object in a User-Defined Tag
• Making a variable available to Smarty from a User-Defined Tag
• Displaying the number of pages in the CMS using a User-Defined Tag
• Using URL parameters in a User-Defined Tag
• Using Smarty values as inputs in a User-Defined Tag

CMS Made Simple 1.6: Learning Smarty Basics

In this article by Sofia Hauschildt, author of CMS Made Simple 1.6: Beginner's Guide, you will learn the basics of Smarty. Creating professional sophisticated designs is easier using Smarty. With the powerful combination of Smarty and HTML, there are no limits to the flexibility of the sites you design.

Cloud-enabling Your Apps

This article by Darren Cope, author of Appcelerator Titanium Application Development by Example Beginner's Guide will show how to integrate with the cloud and will concentrate on how to use some of the storage-based solutions. Specifically you will learn how to:

• Integrate with Appcelerator Cloud Services
• Interface to a REST-based cloud service
• Send and receive data from the cloud

Client-Side Endpoint Protection Tasks in Microsoft SCEP 2012

In this article by Andrew Plue, author of Microsoft System Center 2012 Endpoint Protection Cookbook, we will cover:

• Locating and interrupting client-side SCEP logs
• Performing manual definition updates and checking definition version
• Manually editing local SCEP policy using the user interface
• Utilizing MpCmdRun.exe