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  The Greatest Hacks of All Time

Reader's advisory: Wired News has been unable to confirm some sources for a number of stories written by this author. If you have any information about sources cited in this article, please send an e-mail to sourceinfo[AT]wired.com. In 1972, John T. Draper discovered he could make free long-distance phone calls using a whistle from a Cap'n Crunch cereal box. The whistle emitted a 2,600-hertz tone that got him into the internal authorization system at the phone company. With another noi...

   Hack,Greatest,All time     2012-02-29 05:05:42

  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

  Touching and Gesturing on iPhone, Android, and More

One of the most important parts of creating an effective and intuitive user interface on touch-enabled smartphones has nothing to do with visual appearance—instead, it has to do with creating an interface that properly responds to user input based on touch. For Web applications, this means replacing mouse events with touch events. In Dojo 1.7, new touch APIs help make this process easy. This is an updated version of the post Touching and Gesturing on the iPhone, published in 2008. I...

   Touch,Gesture,iPhone,Android     2012-04-12 11:21:42

  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...

       2019-05-20 05:30:39

  In College, Working Hard to Learn High School Material

In June, Desiree Smith was graduated from Murry Bergtraum High. Her grades were in the 90s, she said, and she had passed the four state Regents exams. Since enrolling last month at LaGuardia Community College in Queens, Ms. Smith, 19, has come to realize that graduating from a New York City public high school is not the same as learning. She failed all three placement tests for LaGuardia and is now taking remediation in reading, writing and math. So are Nikita Thomas, ofBedford Stuyves...

   Education,College,High school,Material,Knowledge transfer     2011-10-24 11:51:39

  Taking C Seriously

Dennis Ritchie, a co-creator of Unix and C, passed away a few weeks ago, and was honored with many online tributes this weekend for a Dennis Ritchie Day advocated by Tim O’Reilly.It should hardly be necessary to state the importance of Ritchie’s work. C is the #2 language in use today according to the TIOBE rankings (which, while criticized in some quarters, are at least the best system we currently have for gauging such things). In fact, TIOBE’s pre...

   C,Efficiency,Memorization,Dennis Ritchie     2011-11-03 13:42:14

  Write Scalable, Server-side JavaScript Applications with Node.js

If you live in the Silicon Valley area, you have already heard the buzz: Node.js is being hailed as the next big thing. It’s the silver bullet that offers scale, eases development, and can be leveraged by the vast pool of client-side JavaScript developers. So, what exactly is Node.js?Node.js is a server-side JavaScript environment that uses an asynchronous event-driven model. It is based on Google's V8 JavaScript engine plus several built-in libraries. The excitement around Node.js is tha...

   Node.js,Server side,Scalable,JavaScript app     2012-03-29 13:50:50

  The Essence of Google Dart: Building Applications, Snapshots, Isolates

WÑ–th thousands of programming languages floating around, why is Google introducing Google Dart? What can it possibly add? The short answer: the Google Dart team wanted a language well suited to modern application development, both on the server and the (mobile) client. Some of Dart's features address problems that languages like Java or Javascript have long had. Dart's Snapshots resemble Smalltalk images, allowing (nearly) instant application startup and wi...

   Dart,Google,Client side,Web,Language,Snapshort,Isolate     2011-10-24 11:41:16

  Ask Bill Gates Anything: Being a Billionaire is Strange, Microsoft Co-Founder Tells Students

How’s the life of a billionaire? “Quite strange,” says Bill Gates, who fielded questions from University of Washington students on Thursday evening as part of a lecture on the future of computing.Gates’ talk, at a packed hall in the UW’s computer science building, focused on some areas where he thinks cheap, powerful computing will have a major impact on society, including education, disease, and robotics.Gates recalled spending time on the UW camp...

   Bill Gate,Billionare,Rich,Advice,UW,Computing     2011-10-28 10:38:34

  Efficiency of code execution

If you want to optimize your program codes, you need to find their Hotspot, i.e, the codes which are executed most frequently. If you can optimize this portion of codes a bit, you may gain much improvement of your code efficiency. Here I give you three examples about efficiency of code execution.1. PHP's Getter and Setter (From Reddit)This example a quite simple, you can skip it if you want.Consider the code below, we can find it's slower when we use Getter/Setter method to read a member variabl...

   Code, Efficiency,Analysis,Trick     2012-07-13 10:59:21

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