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Implementation of +,-,*,/ with bitwise operator
There is a question asked on Stackoverflow : Divide a number by 3 without using *,/,+,-,% operators. This question is an Oracle interview question. Some people give excellent answers. You can go there and take a look. Usually we need to use bitwise operators to do this kind of implementations. Here I want to show you ways to implement +,-,*,/ with bitwise operators. A bitwise operation operates on one or more bit patterns or binary numerals at the level of their individual bits. It is a fast, pr...
Bitwise operator,Shift,Add,Subtract,Multiplication,Division 2012-08-05 01:52:47
If a programming language was a boat…
我是å—最近的一个论å›å¸–åå¯å‘,他的想法至今ä»è®©æˆ‘感到奇特。Turing(图çµ)Turingç»å¯¹æ˜¯ä¸€ä¸ªåŒäººçš®åˆ’艇(感谢评论里的æ醒)。它很å°ã€‚人力的。它通常被当作åˆå¦è€…çš„â€èˆ¹â€œã€‚è€...
Programming,Turing,C,C# 2011-06-24 01:07:42
Apple investigating new iPad WiFi issues, tells AppleCare to replace affected units
According to an internal AppleCare document, Apple is actively investigating a series of WiFi-related issues affecting the third-generation iPad. Since the new iPad’s launch, many users have been complaining about third-generation iPad WiFi issues ranging from connection drops, slow download and upload speeds, or the device’s inability to even pickup local WiFi networks. A thread discussing the issue exists on Apple’s online support forums has almost amassed 700 repl...
Apple,iPad,Wifi,Hardware issue 2012-04-06 01:37:59
ASP.NET 4 Breaking Changes #1: requestValidationMode cause ValidateRequest=False to fail
The request validation feature in ASP.NET provides a certain level of default protection against cross-site scripting (XSS) attacks. In previous versions of ASP.NET, request validation was enabled by default. However, it applied only to ASP.NET pages (.aspx files and their class files) and only when those pages were executing.In ASP.NET 4, by default, request validation is enabled for all requests, because it is enabled before the BeginRequest phase of an HTTP request. As a result, request valid...
ASP.NET,Html content,Error,ValidateRequest,requestValidationMode 2011-11-07 13:50:29
Why PHP is (so much) better than Ruby?
I attended this weekend my first Ruby conference, Ruby Lugdunum in Lyon. Besides cool talks and the fun of meeting people like Nick, Blake, or Laetitia, my friend Camille & I did a surprise lightning talk about how PHP is better than Ruby. Here are the slides and a more detailed transcript: A lot of free hosts: it’s easy to find a PHP host, you just have to google “free php host†and you find a ton of free PHP/MySQL hostsBigger community: The PHP community is really huge,...
PHP,Ruby,Comparism,Difference,Advantage 2011-06-29 08:34:12
Why are ugly websites so successful?
“Techmeme has redesigned,†Gabe Rivera founder of the popular technology news site wrote in January 2012. “Drudge Report is now indisputably the web’s ugliest news site.†I use Techmeme all the time. I find it an excellent news website. It’s a collection of well-selected links to important issues in the technology industry. It doesn’t look pretty but it works fine for me. Asides from the quality of its stories it also has black text on white bac...
Website design,Ugly,Success,Analysis 2012-02-13 05:27:56
Only fast languages are interesting
If this isn’t a Zawinski quote, it should be. I have avoided the JVM my entire life. I am presently confronted with problems which fit in the JVM; JVM libraries, concurrency, giant data: all that good stuff. Rather than doing something insane like learning Java, I figured I’d learn me some Clojure. Why not? It’s got everything I need: JVM guts, lispy goodness; what is not to love? Well, as it turns out, one enormous, gaping lacuna is Clojure’s numerics performanc...
Fast language,Clojure,Perl,JVM SLOW,Lush 2011-11-30 11:16:01
8 most successful open source products
Open source itself is a successful product. It is not only liked by many personals, many famous enterprises like itAlthough there are numerous open source projects and open source products, which is the most successful among them? "Success" is defined as the widely used + well known here. In many successful open source products, only a minority leaders. Here we share 8 most successful open source products we think they deserve to be.LinuxReason: Linux + GNU = GNU / Linux. It has been almost 2...
Open source,MySQL,Linux,BIND,BSD 2012-04-19 08:29:00
Code to Create Custom Share Buttons
Interested in sharing your B2B content on Facebook, Twitter, LinkedIn or delicious? Do multi-option social media sharing tools such as ShareThis seem like overkill?That was our conclusion after researching the social media sites on which readers are most likely to share content from our blog focused on solutions to a wide range of business challenges, What Works for Business. We decided that Facebook, LinkedIn, delicious, and Twitter were the sites on which our target busines...
Share button,Web content,Facebook,Custom 2011-08-24 10:40:29
My ten development principles
After several years developing software, I have acquired a very a strong opinion on how software should be developed, I actually have come to the conclusion that everything boils down to 10 principles, that if well implemented, will make any software development successful. 1.- Customer first. “If we don’t take care of the customer… somebody else will.†Customer first means focusing from a customer perspective on real value for the product being developed,...
Principle,Software,Development,Communica 2011-08-15 07:28:55
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