SEARCH KEYWORD -- software testing
9 reasons to use Zsh
Like majority *nix users, I have been using bash for many years. Sometimes I feel uncomfortable with bash. I tried use some other shells as well such as ksh, tcsh and zsh which I am going to talk about. A few days ago, I found an open source project ranking in the 6th named oh-my-zsh on Github, I downloaded it and had a try with it. It's amazing. We should use zsh to replace bash now. Why do we need to use zsh? Here is a 4 minutes YouTube video which shows many reasons why we should switch from ...
How expensive is a MySQL query?
Database access speed is always the bottle neck of many applications. Many application have large amount of data to search, retrieve and display nowadays. How do we improve the performance of our applications, how do we reduce the cost of database access? Apart from the design of database, the quality of the query is also one important factor to take care. But before that, we need to know how much network traffic a query will consume. Yunyang,Zhang from Nubee in Singapore did some research...
MySQL,Network traffic,Query 2013-04-09 05:13:33
C Macro Tips and Tricks
Preprocessor vs Compiler To properly understand C macros, you must understand how a C program is compiled. In particular, you must understand the different things that happen in the preprocessor and in the compiler. The preprocessor runs first, as the name implies. It performs some simple textual manipulations, such as: Stripping comments. Resolving #include directives and replacing them with the contents of the included file. Evaluating #if and #ifdef directives. Evaluating #defin...
C,Macro,Preprocessor,Trick 2012-05-01 06:49:05
A brief guide to tech internships
Planning to be an Intern in the Bay Area during Summer 2012? Make sure to read an Intern's Guide to the Bay Area, and join the 2012 Facebook group. (via this guy, via this guy) Joel Spolsky, from the Joel On Software blog and StackOverflow, wrote an article with Advice for Computer Science College Students back in '05. According to Joel, No matter what you do, get a good summer internship. As such: here’s everything you ever wanted to know about tech inter...
Internship,Advice,CS student 2012-02-01 04:48:31
The ugliest C feature:
<tgmath.h> is a header provided by the standard C library, introduced in C99 to allow easier porting of Fortran numerical software to C. Fortran, unlike C, provides “intrinsic functionsâ€, which are a part of the language and behave more like operators. While ordinary (“externalâ€) functions behave similarly to C functions with respect to types (the types of arguments and parameters must match and the restult type is fixed), intrinsic functions accept arguments of...
C,
The 10 Greatest Hacks of My Life
My co-founder and I briefly considered applying to YCombinator for the Winter 2012 session. We eventually decided to bootstrap Curvio initially, and raise a seed round on our own after we launch (so far so good!). But looking over the YC application, one question intrigued me:Please tell us about the time you, tansey, most successfully hacked some (non-computer) system to your advantage.Now, there are a lot of ways to interpret this. A mechanical interpretation would be about...
Hack,Most important,Example,Curvio 2011-10-22 12:47:42
Who Uses PhoneGap/Apache Cordova?
The HTML5 Microzone is presented by DZone and Microsoft to bring you the most interesting and relevant content on emerging web standards. Experience all that the HTML5 Microzone has to offer on our homepage and check out the cutting edge web development tutorials on Script Junkie, Build My Pinned Site, and the HTML5 DevCenter. I see questions and comments all the time with the general sentiment “it looks nice, but who really uses PhoneGap/Apach...
How VR technologies take over the world
Virtual Reality (VR) literally may get it beneficial to experience anything, anywhere, anytime. It is normally the several immersive type of legitimate fact technology and can convince the real real human human brain that it is usually normally someplace it can get absolutely critically not really seriously. Brain installed displays happen to be used with earphones and hands controllers to offer a entirely immersive arrive across. With the major technology businesses on whole world community (Fa...
Eleven Equations True Computer Science Geeks Should (at Least Pretend to) Know
This idea is a complete rip off an article that appeared in Wired a little while ago and it got me thinking what would my list for Computer Science look like? Plus I thought it might be a fun post and unlike the Wired list this one goes to eleven. So here they are in no particular order: Binomial Coefficient The Binomial Coefficient equation generates Pascal’s Triangle and gives you the coefficients for the Binomial Theorem these ideas are often attributed to Pa...
Algorithms,Computer science,Euler formula,Fermat 2011-11-29 08:42:50
Investment Banking in China — What I’ve Learned & Unlearned
Anyone seeking to succeed in investment banking in China should live by one rule alone: it’s not who you know, but how well you know them. In China, more than any other country where I’ve worked, the professional is also the personal. Comradeship, if not friendship, is always a necessary precondition to doing business together. If you haven’t shared a meal – and more importantly, shared a few hundred laughs – you will never share a business deal. Competence, ex...
Business,China,Relationship,Cooperation,Advice 2011-11-18 09:13:49
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