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  The trap of the performance sweet spot

This post is about JavaScript performance but I would like to start it by telling a story that might seem unrelated to JS. Please bear with me if you don’t like C.A story of a C programmer writing JavaScriptMr. C. is a C programmer as you can probably guess from his name. Today he was asked by his boss to write a very simple function: given an array of numbered 2d points calculate vector sum of all even numbered points... He opens his favorite text editor and quickly types somet...

   C,JavaScript,Sweet spot,Memory,Low level,Trap     2011-11-06 14:45:01

  Telecom elements in WeChat

As an engineer who spends much time on focusing on WeChat like applications(Skype, Fring, Viber, Kik Messenger, WhatsApp, Talkbox, LINE, Kakao Talk) , I would like to share with you the telecom element in WeChat to show the inheritance and integration of traditional telecom services in the Internet service and applications.First, WeChat is an application to send messages, the fully IP-based messaging capabilities may replace the traditional telecom services such as SMS, MMS and VMS ,This is ver...

   WeChat,Telecom operator     2013-04-13 20:29:46

  Internet trends and your web development strategy

Takeaway: Ryan Boudreaux looks at some of the latest reports on how users are spending their time on the web. Keeping an eye on trends is one way for web developers to stay current. Recent figures in Internet activity include several interesting trends, including: the number of smartphone-user adoption rates Cyber Monday sales figures mobile banking app usage social networking on mobile social media hours spent online search habits Trends in worldwide Internet activity may or may not translate ...

   Internet trend,Mobile,Web design,Web app     2012-02-01 00:02:29

  Web design trends for 2014

Now, it's age of web, many resource and manpower have been invested in web to extend and enhance the capability of web. Every year there are new web designs and technologies emerging. In recent years, with the popularity of handhold devices such as smart phones and smart devices like iPads,Surface, responsive design is becoming a requirement, also we can find flat design in many places. The web design trend is changing dramatically. Many people may wonder what's the web design trend in 2014? Jow...

   web design,trend,2014     2014-06-01 08:27:35

  Android socket programming example

Socket is a kind of interface for different sides t communicate, it usually identified by an IP and a port. There are many server side software on a server and they would provide different service. Each server many create some sockets and bind them to some ports so that clients can listen to. Software on the Internet will exchange data though a bidirectional connection established. Each end of the connection has a socket created. In Java, Socket and ServerSocket are in java.net package, ServerSo...

   Android,Socket,Java     2013-05-11 22:17:16

  Does mobile application need architecture design?

Looking back to the history of PC software development a dozen years ago there was no  software architecture design, the consequence of this was that there would be a high cost on software maintainability and scalability. Later, people recognized the importance of software architecture and started to make the concept of software architecture mature. Now almost all software will have architecture design which has been the consensus of the software development companies and developers.Simi...

   Software design,Architecture design,Mobile app     2012-04-12 11:14:37

  How Technology Can Prevent Casino Cheating

Cheating has been around as long as gambling itself, which is surely since the dawn on of time. Cheating in casinos, both land based and online, can prove a huge problem, not only for those playing against the cheater, but for the individual casino operators, as well as the industry in its entirety. Preventing cheating makes casino play fairer for all involved, both operators and their clients.Fortunately, in today's day and age, we have excellent, highly developed technology that can assist cas...

   Technology,Casino     2015-07-13 02:52:44

  Speed Hashing

A given hash uniquely represents a file, or any arbitrary collection of data. At least in theory. This is a 128-bit MD5 hash you're looking at above, so it can represent at most 2128 unique items, or 340 trillion trillion trillion. In reality the usable space is substantially less; you can start seeing significant collisions once you've filled half the space, but half of an impossibly large number is still impossibly large. Back in 2005, I wondered about the difference between a checksum and...

   Speed hashing,Security,MD5     2012-04-07 10:35:15

  Optimization Tricks used by the Lockless Memory Allocator

With the releasing of the Lockless Memory Allocator under the GPL version 3.0 license, we can now discuss more of the optimization tricks used inside it. Many of these are things you wouldn't want to use in normal code. However, when speed is the ultimate goal, sometimes we need to break a few rules and use code that is a little sneaky.The SlabA slab is a well-known technique for allocating fixed size objects. For a given object size, a chunk of memory is divided up into smaller regions of that ...

   Optimization,Memory allocation     2011-11-16 08:02:16

  Please Steal These webOS Features

When Apple introduced the first iPad in 2010, I bought one immediately. I didn’t know what I’d use it for, but I was sure that I would find some use for it. I never did. I played around with it, wrote some code for it, but eventually stopped using it. I would pick it up from time to time to read something or watch a YouTube movie, but even that was a rare occurrence. I have since picked up an iPad 2, and I’m using it a lot more than the first iPad, but again, I’...

   WebOS,Feature,HP,borrow     2012-02-22 05:45:49

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