"Hello, World!"

printf(” Hello, World!”);
cout<<“Hello, World”;
print “Hello, World!”
System.out.println(“Hello, World!”);

“Hello, World!” is more than just a string. Its the mark of starting a new venture. More seen in technology than anywhere else.
With the spirit of  hardcore technology,  TechCorner group starts-off.

This is  a “Hello, World!” post from the admin. Hope we have ultimate tech experience here.

Submitting a form via AJAX

Ok so here is a very simple yet descriptive example how web-forms can be submitted using AJAX. This is an advanced tutorial, so although I’ll try to explain everything, I am assuming that the reader has a basic understanding of php and javascript.

AJAX is Asynchronous JavaScript And XML. Its a client side method to communicate data with a server. Asynchronous means that this communication can take place without interfering with other client side processes. (As we’ll see later, the asynchronous part is optional). Javascript is the main framework where AJAX works and XML is a format in which data might be communicated. Although this is not necessary. Data might be communicated in text, JSON, etc formats also.

Lets jump right in and look at this live demo.

Ok, lets look at the code now. The HTML structure is something like this:
http://pastebin.com/embed_iframe.php?i=tQEjujan

Crysis 2 Review

Everyone remembers Crysis and Warhead, the graphics which redefined modern game graphics, the nanosuit the aliens , the story and the best gameplay the Gaming industry had seen in a really long time. With all this said, Crysis 2 had to live up to its standards.

Portal – 2

Finally I got a chance to get back to gaming with Grid and Portal-2. I was very happy to get Portal-2 in first place. I liked the first part a lot. The game provides player only one weapon and an awesome game-play. For those who didn’t play Portal, I would say that play the first edition to get into the feel of ‘Portals’.

Before I start, this post is not a walk-through or chapter-wise guide or something similar to that. Its just my take on the game.

Game Engine / Graphics:
Portal is designed on Source Engine, used in Half-Life 2 and Left 4 Dead. The environment has great detail and physics. Well don’t we all love great detail and physics? 😀

For people who are expecting Crysis like graphics, Sorry. The game has just enough graphics to enjoy. I was enjoying the game on my 1080p monitor just when the game crashed due to GPU overload. More on this later.

Challenge Room

Socket Programming

Anyone who has done some kind of network programming will be aware of the concept of sockets.
For those,who haven’t ever done it,this may be a very good place to start.

Me and 2 of my friends recently created a chat-server application using sockets in C in linux environment.What happened was,that once server-client connection was established,when a client would send some data to the server,the server would send the data to all the other clients.It was a localhost appplication however,and the primary purpose was interprocess communication implemented as a chat application.

Changing Body Background Image Using Javascript

Things are getting weirder.
So I was trying to set the background image of a website using javascript. The requirement was to set an image as a background and then setting the parameters background-position as center and background-repeat as no-repeat. So here was my initial code:

document.body.style.background = “url(images/middle-bg.jpg)”;
document.body.style.background-position = “center”;
document.body.style.background-repeat = “no-repeat”;

AND IT WAS NOT WORKING!!

I tried variations, searched the forums. There were variations like

C / C++ Programming in Linux – For starters

I have had a lot of requests on snippets of how to do C/C++ programming in Linux.
Thanks to KS sir ( yeah Khushil Saini sir) for giving us intro a proper way. Without him, I would have probably used DevCpp and lived on Windows. I will try to keep it short and simple unlike his notes 🙂

Linux used is Ubuntu (any version will do). Language considered: C/C++

Why people dont get along with Programming

Many people who come to a tech college like NSIT want to start something new with no idea where to begin with. And just at the right moment they see some workshop about someone hacking into something and voila ,  the dude just hacked into the facebook account!

Thats when it strikes your mind , “Wow thats so cool and also earns me money! Why not learn that!?

And then you start your journey only to realize a few days later, “I cant do this! Its a headache! and way out of my league. I can never be as good as that hacker if I go on like this.” without realizing the fact that its not an overnight magic trick or a 1 week magic crash course that is going to give you super coding skills.

Initially everyone sucks at programming. So I decided to compile a list that identifies reasons and advice to improve your programming skills.

And you just might save yourself from doing This

A History of Antennas

Ok, so what’s an Antenna?
An Antenna is a transitional structure between free space and the guiding device.
In simple terms, Antenna is a structure which takes the signals from the guiding device and transmits into free space.

So how did it came into being? Let’s reflect upon it’s history.

Image capturing in matlab

If you are using a laptop with a camera. Then this is how one can open the camera in MATLAB.

Web cameras are viewed by Matlab as adapters. So to use the webcam we need to know the adapter name of our webcam. In most cases it’s “winvideo”

So to know that: we type the following command.

>>imaqhwinfo

So easily one can see that the installed adapters in my system are ‘coreco’ and ‘winvideo’

Now to use that adapter we need to make an object for it. This is how it’s done:

>>obj1

=

videoinput(‘winvideo’);

This creates an object to handle the web cam and can be henceforth used to operate the webcam.

The following simple command lets you preview the camera output.

>>preview(obj1);

voila, Now don’t blush. 🙂