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Concise bash programming skills
The following are some concise bash programming skills which we may need in our daily programming work. 1. Check status of command execution The usual way: echo abcdee | grep -q abcd if [ $? -eq 0 ]; then echo "Found" else echo "Not found" fi Concise way: if echo abcdee | grep -q abc; then echo "Found" else echo "Not found" fi Of course you can remove if...else with following code [Sun Nov 04 05:58 AM] [kodango@devops] ~/workspace $ echo abcdee | grep -q ...
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
Android Tutorial: Creating and Using an SD Card in the Emulator
In a previous post, I mentioned how user-friendly Android is for developers. There’s extensive documentation and information on the architecture, the different components and best practices. However, the documentation has a few blind spots. Many of the tools have little documentation and no usage examples. The information is there, it’s just hidden behind a few layers of Android theory.So I’m going to try and document a few of the basic things that you’ll probabl...
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=â€http://twitter.com/home?status=Currently reading http://www.test.com/post-url†title=â€Click to share this post on Twitterâ€>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=â€ht...
Twitter,Share button,Customize,Custom 2011-08-24 10:55:51
A Programmer’s Greatest Enemy
A programmer’s greatest enemy is getting stuck. A crucial skill in programming—and one that many of my beginning game programming students lack—is the ability to recognize when they’re stuck, to get out of being stuck, and to avoid getting stuck in the first place.Indeed, it’s a skill I’m still learning myself, although the contexts in which I still get stuck are shrinking with time, study, and experience.This morning, as I downloaded crash reports ...
Programming,Enemy,Stuck,Game design,Crash 2011-10-15 15:06:46
A return to good code
Stop doing this:public boolean foo() { if (true) { return true; } else { return false; }}It always amazes me when I dig into an open source project, and I see code written by supposed experts, and reviewed by seasoned professionals, and nobody slaps the wrists of the developer who shoves return statements right in the middle of a method.Tell me, how hard is it to do this:public boolean foo() { boolean flag = true; ...
Why isn't all internet traffic encrypted?
The biggest problem is that you must be able to verify that you're encrypting to the correct key. Without it, encryption would be practically useless, as anyone could perform a man-in-the-middle attack on the connection and remain undetected.In typical SSL/TLS, as well as other protocols using X.509, this verification is performed by "certification authorities", which are explicitly marked as "trusted" by web browsers and operating systems. Unfortunately, these CAs usual...
Internet,Traffic,Encryption,Decryption,Security 2011-10-15 15:03:37
It’s Not Too Late to Learn How to Code
Coding is sort of like a superpower; with it you can create things that millions of people see. You can change the way people behave, the way they think, and the way they interact with others. This is beyond awesome, but I’ve also met a lot of people that think that this ability is inaccessible to them. I’ve met a lot of “non-technical†people who seem to think that this superpower is only bestowed on those fortunate enough to have it come easily to them at a very early...
Tips,Coding,Preparation,Interest 2011-10-17 11:26:38
Show Bootstrap tooltip in AngularJS ng-repeat elements
In contemporary web application development, many front-end frameworks have been used to accelerate the speed of development and circumvent browser compatibility issues. Among them, AngularJS and Bootstrap are two frequently used. AngularJS is a MVC JavaScript framework developed by Google to provide easy synchronization between user view and data model. While Bootstrap is developed by Twitter and it eases the work of designing a simple and concise UI without much manual design work ...
PHP Query String
Query string plays important role in building web applications, especially if you want to make nice urls without question mark and many key, value pairs, actually it is not so easy to design application with nice urls however it is always worth doing so, because it not only looks very proffessional, such URLs are search engine friendly, which means that they will get indexed faster but also it happens that search engines have problems with indexing pages with more then 3 key=value pairs in query...
PHP,Query string,Request,Security 2011-10-01 02:23:15
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