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How To

NSPointerArray and Collections of Weak Objects (Objective - C)

There will be times when you want a collection of weak references. Any one to many notification chain is just begging to introduce reference cycles more than willing to leak all over your application. So when you have this situation in your application, you might want to consider the NSPointerArray. Attached is an example of the NSPointerArray in action.


· 1min
How To

ASP.NET AJAX Data Grid: Enabled & Disabled Checkbox States

Is it checked or not quite? Multi-state checkboxes are in the menu today. Which, of course, begs the question “Doesn’t the WebDataGrid already support checkbox columns out-of-the box?”.


· 6min
How To

Creating a Vcard Qr Barcode Generator With jQuery Igqrcodebarcode Control

The igQRCodeBarcode control is an HTML5, canvas control for Data Visualization. It presents different kind of information like URLs, personal contacts and etc. by rendering a Quick Response (QR) Code.


· 5min
How To

How To Build XAML Doughnut Chart?

The Infragistics packages for WPF and Silverlight contain a lot of diverse charts for data visualization. The control that we are going to look at is The Doughnut Chart.


· 3min
How To

HTML5 Sparkline Chart for Data-Intense Visualizations

Described as “intense, simple, word-sized graphics”, Sparklines go beyond a simple line.


· 6min
How To

Fundamentals of Python: Functions, Formatting & Assignment Statements (Week 2)

Here we are at Week 2 of Fundamentals of Python! This week covered Functions, Formatting & Assignment statements, which don't need much explanation really, so let's get right into it!


· 4min
How To

Create Video Gallery: jQuery Upload Control and HTML5 Video Player

The UI package contains different useful features. In this blog you will see how to create a simple video gallery using File Upload and Video Player Interaction controls similar to that one:


· 3min
How To

Introduction to Systematic Programming – Locals & Abstraction (Week 7)

Week 7 brought in the concepts of both local and abstract expressions. As seems to be the case with me, this week was half a review from other courses that was nice and refreshing, and then BAM, a new concept that completely threw me for a loop.


· 8min
How To

Designing Useful, Usable, & Innovative EHR Systems

Developed and honed over generations, the medical profession has created processes, procedures and physical artifacts that serve healthcare professionals and their patients well. Yes, there are process improvements to be had.


· 3min