How Shock Absorbers Work

http://blogs.howstuffworks.com/2009/08/26/how-shock-absorbers-work-2/

The credit goes to original author.

cheers!

Unable to locate theme engine in module_path: "pixmap"

If you get the above warning just run
sudo apt-get install gtk2-engines-pixbuf

cheers

How to open Java .class files in a human-readable way?

Hi,

I came across a java applet on a webpage and I wanted to know how it worked. These .class files are not human readable if you open them in a text editor like notepad.

• When you view the source of the webpage (IE just right click on the page and there is "View source" option) you can find what .class is running, which is the underlying program for the applet.
• After that you can use something like JD-GUI, a java decompiler, to view the code
• JD-GUI: http://java.decompiler.free.fr/?q=jdgui

Hope this helps!

How to tie a tie in 10 seconds

I found this post really interesting and wanted to share with you all. Hope this would help you guys!

volatile keyword in C++

I came across the keyword volatile for the first time.

It is used to prevent the compiler from modifying a segment of code for optimization. Variables defined with volatile keyword can be used for:

• accessing memory mapped devices
• signal handlers etc.

Here is an example (from wikipedia).

static int foo;
 
void bar(void) {
    foo = 0;
 
    while (foo != 255)
         ;
}

This code will be optimized to:

void bar_optimized(void) {
    foo = 0;
 
    while (true)
         ;
}

by an optimizing compiler.

If, however, the variable foo can change outside the code, we do not want the compiler to modify it. So, we use the volatile keyword as follows:

static volatile int foo;
 
void bar (void) {
    foo = 0;
 
    while (foo != 255)
        ;
}

SVN Checkout

SVN stands for subversion.It is a version control software that allows users to download latest version of a particular branch without having to wait until it is properly packaged and delivered.

Here is how you can checkout from svn.

svn checkout <here you enter the web page address>

How to change font size in LaTex equations

Credit should go to original contributor. I am just sharing here.

\documentclass{article} \usepackage{amsmath}
 \begin{document}

 \begin{eqnarray} 2x+3 \end{eqnarray}

 \makeatletter
 \def\@eqnnum{{\normalsize \normalcolor (\theequation)}}
  \makeatother
 { \small \begin{eqnarray} 2x+3 \end{eqnarray} }
 \end{document} 



to make sure the size of the equation numbers are not changed we have included a redefinition of the eqnnum command.
\makeatletter  \def\@eqnnum{{\normalsize \normalcolor (\theequation)}}  
\makeatother

available sizes:

• \tiny
• \scriptsize
• \footnotesize
• \small
• \normalsize (default)
• \large
• \Large (capital "L")
• \LARGE (all caps)
• \huge
• \Huge (capital "H")