Today's Question:  What does your personal desk look like?        GIVE A SHOUT

SEARCH KEYWORD -- Sans-serif

  10 tools to make your shell script more powerful

Many people mistakenly think that shell scripts can only be run in command line. In fact shell can also call some GUI components such as menus,alert dialogs, progress bar etc. You can control the final output, cursor position and various output effects. Here we introduce some tools which can help you create powerful, interactive and user friendly Unix/Linux shell scripts. 1. notify-send This command can let you inform the process to send a desktop notification to users. This can be used to send ...

   shell,GUI,zenity     2013-04-05 08:50:41

  I've got an idea for an app

I’ve been an iPhone developer for over three years now. The first app I built was CookieCombo. We sold enough copies to go bowling twice, but still it was completely worth it. We tweeted about it, and got some awesome gigs out of that. Everybody was in need of iPhone developers, and there was a huge shortage. Good times.As more and more people got to know that I’m an iPhone developer, I got to hear the following phrase more often: “Hey, you know, I got a great idea for an app...

   Idea,App,Induction,Creativity,Innovation     2011-09-08 10:37:09

  Consistency between Redis Cache and SQL Database

Nowadays, Redis has become one of the most popular cache solution in the Internet industry. Although relational database systems (SQL) bring many awesome properties such as ACID, the performance of the database would degrade under high load in order to maintain these properties. In order to fix this problem, many companies & websites have decided to add a cache layer between the application layer (i.e., the backend code which handles the business logic) and the storage layer (i.e., the SQL d...

   REDIS,CACHE,DATABASE     2019-07-07 08:14:16

  How Query Optimizer Works in RDBMS

In a previous post, we discussed how the various relational operators are implemented in relational database systems. If you have read that post, you probably still remember that there are a few alternative implementations for every operator. Thus, how should RDBMS determine which algorithm (or implementation) to use? Obviously, to optimize the performance for any query, RDBMS has to select the correct the algorithm based on the query. It would not be desirable to always use the same algori...

   DATABASE,DATABASE DESIGN,DATABASE OPTIMIZATION     2019-04-20 07:26:32

  Go Error Best Practice

Being indulged in Go for quite a while and having implemented web-related programs, grpc interfaces and Operators, I seem to be an advanced beginner now. However, I am still a raw hand in production-environmental debugging, which is cumbersome if done by querying logs or error messages. Imagine the scenario that a full-text search is called when the specific location of the error log is missing. Then what happens when those error logs are not only in one place? Yes, my error logs can no longer h...

   GO ERROR,ERROR HANDLING     2021-10-07 07:38:28

  CSS3 Animation With jQuery Fallbacks

In today's post, we'll be taking a look at how you can use CSS3 transitions to power your application's animations with jQuery's .animate() method as a fallback where transitions aren't supported. The benefit of transitions is that unlike JavaScript based animations, they're hardware accelerated in certain browsers and mobile devices, resulting in a potentially smoother overall animation than you would normally experience. In a lot of cases your code will work seamlessly with the solut...

   CSS3,Animation,JavaScript,jQuery,Demo     2011-08-19 08:10:58

  Making Sites Shine with @font-face

Like many of my web designer brethren, I’m a bit of a typographic geek. And like many web designers, I’ve been frustrated (to say the least) about the historical state of web typography.At first, we were limited to a common, but very small set of “web safe” fonts. Anything beyond those fonts, we had to rely on images. Images for text not only meant we had to create and maintain dozens (if not hundreds) of images, but it introduced accessibility issue...

   HTML,Font face,Font family,Demo,Example     2011-08-19 08:16:29

  How to draw pentagram in HTML5 canvas

I wrote simple function to this magical symbol I like so much: 123456789101112131415161718192021222324252627282930<!doctype html><html><body>    <canvas id="c" width="500" height="500"></canvas>    <script> var ctx = (document.getElementById("c")).getContext("2d"); // draws rotated pentagram with or without cirlefunction pentagram( ctx, x, y, radius, rotate, circle ){    ctx.beginPath();&nbs...

   Html 5,Canvas,pentagram     2012-04-23 12:56:06

  Top Ten Tips for Correct C++ Coding

Brian Overland, long-time Microsoft veteran and author of C++ Without Fear: A Beginner's Guide That Makes You Feel Smart, 2nd Edition, shares 10 of his most hard-earned, time-saving insights from decades of writing and debugging C++ code.My first introduction to the C family of languages was decades ago (yes, I know this dates me horribly). Later I learned C++. I wish someone back then had steered me around the most obvious potholes; it might have saved me hundreds of frustrating hours.I ca...

   C++,Tips,Top,Ten,Magic number,Integer di     2011-09-03 10:58:35

  What can .htaccess file do?

A .htaccess file is a directory-level configuration file supported by several web servers, that allows for decentralized management of web server configuration. What can a .htaccess file do? We summarized some of them here.  Hope it may help you. 1. Timezone settingSometimes when you use date() or mktime() functions in PHP, , it may display some weird information because of the timezone difference. For example, one possible warning is :Warning: date(): It is not safe to rely on the syste...

   .htaccess,setting,tip     2012-06-15 06:39:39

RECENT