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  Understand diff in Unix

diff is an important tool program in Unix. It is used to compare differences of two files, it is the foundation for code version control. If you type : $ diff <file_before_change> <file_after_change> diff will tell you what's the difference between these two files. The result may not be so easy to understand, so now I will show you how to understand diff. 1. 3 formats of diff diff has 3 formats due to historic reasons. normal diff context diff unified diff 2. Demo files For easy d...

   diff,Unix,version control,git     2012-09-03 10:49:36

  Share on Twitter link

Ever wanted to give your readers, or your client’s readers a chance to share the post quickly on Twitter?The code is straight forward:<a href=”http://twitter.com/home?status=Currently reading http://www.test.com/post-url” title=”Click to share this post on Twitter”>Share on Twitter</a>If you’re using WordPress and want to automate this, simply use the following to insert the link to the current post in the loop into your link:<a href=”ht...

   Twitter,Share button,Customize,Custom     2011-08-24 10:55:51

  A Fun Approach To Creating More Successful Websites

As Web designers and developers, each project we work with has a unique set of goals and requirements. But one goal we have for all of our projects is that we want them to make an impression on people — we want the websites that we create to be memorable. A fun experience is often an enjoyable one and an enjoyable experience is usually a memorable one. Therefore, it stands to reason that one of the ways to create a memorable experience is to make it a fun experience. In this article,...

   Web design,Elements,UI,Success     2012-03-05 05:10:07

  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

  Redis Cluster and Common Partition Techniques in Distributed Cache

In this post, I will discuss a few common partition techniques in distributed cache. Especially, I will elaborate on my understanding on the use of Redis Cluster. Please understand that at the time of writing, the latest version of Redis is 4.0.10. Many articles on the same topic have a different idea from this post. This is mainly because, those articles are probably outdated. In particular, they may refer to the Redis Cluster implementation in Redis 3. Redis Cluster has been improved...

   REDIS,DISTRIBUTED CACHE,CLOUD COMPUTING     2019-01-17 08:10:37

  How to commit code to OpenStack

If you want to make contributions to OpenStack, the best way to start is to help the community with blueprint or submit bug fix. To commit codes, you need to conform to some rules in the community. Work flow Register an OpenID Apply for a CLA certificate Apply for company CLA certificate Update contributor list Join OpenStack Contributors group and OpenStack group Set up SSH Keys Get a blueprint/bug git clone codes to local disk. Configure user name and user email and openid Modify codes in a l...

   OpenStack,Contribution     2013-08-04 23:04:45

  One of the Best Bits of Programming Advice I ever Got

Years ago (early 1992), I attached myself to this crazy skunkworks project that was using this weird language called Smalltalk. "Object Oriented" was in its infancy as a "hot" item. High paid consultants. Lots of people laying claim to what this new object religion was all about. This was 5 years before Alan Kay would make the statement "I invented the term 'Object Oriented Programming' and this {Java and C++} is not what I had in mind."Shortly after hooking up with this whacky group with t...

   Programming advice,OOP,Smalltalk,Better design     2011-11-28 03:14:25

  A list of different CAPTCHA designs

Here is a list of website CAPTCHA designs which demonstrate all kinds of weird verification methods. By looking at these designs, as a website designer, you should distinguish which design is accessible and which is not.Is this human readable?What characters are in the picture?One moreWe will be crazy if we see theseOMG,What's the answer?IQ Test?Are you a normal person?You know how blind people read?ASCII PictureAre you an adult?3D verification codereCaptchaIt increase a new feature recently. It...

   CAPTCHA,Website design     2012-07-19 11:51:06

  Cache them if you can

“The fastest HTTP request is the one not made.” I always smile when I hear a web performance speaker say this. I forget who said it first, but I’ve heard it numerous times at conferences and meetups over the past few years. It’s true! Caching is critical for making web pages faster. I’ve written extensively about caching: Call to improve browser caching(lack of) Caching for iPhone Home Screen AppsRedirect caching deep diveMobile cache file sizesImproving app ...

   Cache,HTTP request,Websiite     2012-03-27 12:54:02

  noConflict mechanism in jQuery

Many JavaScript frameworks like to use $ as function or variable name, jQuery is one of them. In jQuery, $ is just a reference to window.jQuery, so even if $ is deleted, window.jQuery will still be available to ensure the whole library can work normally. jQuery API design takes fully consideration of multiple frameworks conflicts, we can use jQuery.noConflict function to easily handle control. jQuery.noConflict accepts one optional boolean parameter[1] to determine whether to hand jQuery object ...

   jQuery,noConflict,$     2013-03-14 19:40:36

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