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November 2010 - Posts - Life Michael

November 2010 - Posts

Introduction to SQL Server 2008

I have recently completed the development of a new fundamental course about SQL Server 2008. If you are doing your first steps this is the course you want to take. You will learn the basic SQL commands and you will learn how to execute them when using the SQL Server 2008. The course is available for free personal usage at www.abelski.com and it includes slides, video clips, forums and assignments.

The video clips that were developed for this course are available for free personal usage in my SQL Server dedicated YouTube play list.

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Threads Signaling using The ManualResetEvent Class in C#

Threads can signal each other using objects instantiated from the ManualResetEvent class. The following video clip shows and explains that.

More video clips can be found at www.abelski.com and at www.CSharpBook.co.il.

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The ArraySegment Struct

The ArraySegment struct assists us when working with segments of arrays. Instead of handling the offset and the number of elements separately for each segment we can instantiate the ArraySegment struct and get an object that describes a specific segment. The following video clip explains that.

More code samples, slides and video clips about this topic can be found in my C# Fundamentals course at www.abelski.com.

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The C# Pragma Directive

Using the #paragma directive we can supress warning messages for specific code segments. The following short video clip shows that.

One of the scenarios in which this directive can be useful is the case of having multiple warning messages. When their number is small it is easy to track. When there are many of them it might confuse. I you happen to deal with code written in a clumsy way by some one else long time ago I believe you will most likely find this directive highly practical on your end.

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Introduction to HTML 5

I have recently completed to develop an introduction course for HTML 5. It covers HTML 5 important parts. The professional commercial version is available at www.xperato.com. The community free version is available at www.abelski.com.

Taking this course you will learn how to use HTML 5 new tags and how to use its new JavaScript APIs. The topics this course covers include the following:
Multimedia
Geo Location
Offline Storage
Canvas 2D Graphics
WebGL 3D Graphics
Communication
Web Workers
Web Sockets
HTML 5 Forms
Drag & Drop

The slides include inner links for relevant video clips hosted on the youtube platform. Watching these clips please don't hesitate to place your comments.

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Java Script Programming

If you have already checked the HTML 5 capabilities then you should already know that HTML 5 isn't just about tags. Major part of it is about new Java Script APIs that enable us various capabilities such as getting geolocation information, interacting with Java Script code running in other windows and using the web browser for storing data as if it was a small database.

Now, that Microsoft took its decision about HTML 5 as the major technology for RIA development it is clear that we should all master the Java Script programming language.

I have recently completed to develop a detailed course that teaches how to develop code in Java Script. The community version is available for free personal and academic usage at www.abelski.com. The commercial professional version is available at www.xperato.com.

Please don't hesitate and let me know your thoughts. I will be more than happy to get your feedback.

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The Trenary Operator in C#

The trenary operator (?) we can use in our code is kind of a replacement for using the if..else statement. The following short video clip (hebrew) explains how to use it. If you are doing your first steps learning C# this video clip might assist you understanding this operator.

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Facebook Graph API Objects Introspection

We can easily get information about the other objects each object on the facebook graph is connected with. Trying to request a URL address with the following pattern filling in the unique ID (of the object we are interested at) will return a JSON file with detailed information about all objects that object (the one we are interested at) is connected with.

https://graph.facebook.com/_________?metadata=1

When we try to request the https://graph.facebook.com/742375122?metadata=1 URL address we will get a JSON file that lists all object that are connected with the objects 742375122 is its unique ID number.

The following short video clip explains how we can introspect objects that belong to the facebook graph.

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