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")

TeXniCenter 0 ERRORS, 0 WARNINGS, 0 BAD BOX, 0 PAGES.

This happens if the MikTex has missing packages. To resolve this, go to
for e.g. MikTex2.9 -> maintainance (admin) - > Settings (admin) -> General and choose

either Yes or No (but not "Ask me first") for the option "Install missing packages on-the-fly".

cheers!

To get files from a FTP server

This is simple.

1. Open the given ftp location in internet explorer
2. In the "view" tab, click on "open FTP site in windows explorer"
3. Just copy the contents from there

Cheers!

To span figures in two columns in LaTex

If you need your figures to span two columns in LaTex this is what you have to do.
\begin{figure*}[t]
\end{figure*}
Just change figure into figure*. Simple as that!