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First steps with Scala, say goodbye to bash scripts…
Those who know me are aware that I’ve been following play framework, and actively taking part of it’s community, for a couple of years. Playframework 2.0 is right around the corner, and it’s core is programmed in Scala, so it’s a wonderful opportunity to give this object-oriented / functional hybrid beast a try… Like many others, I will pick a very simple script to give my first steps… Finding an excuse to give Scala a try With a couple of friends we are ...
Scala,Functional programming,Bash script,Replacement 2012-01-12 06:45:16
Audio API in Android development
Mobile devices of the first generation were not capable of playing any sounds except monophonic ringtones. Today any smartphone platform supports playback, record and to some extent manipulation of digital sound, often up to CD quality.Android is no exception to that. Even older 1.5 devices can do a lot of things with digital audio. However, due to lack of guidance, a developer who is doing his first audio feature might miss some of the available API facilities, or might choose the approach that...
Audio,Android,MediaPlayer,AudioTrack,Sou 2011-04-21 11:32:32
The Greatest Developer Fallacy Or The Wisest Words You’ll Ever Hear?
"I will learn it when I need it"! I've heard that phrase a lot over the years; it seems like a highly pragmatic attitude to foster when you're in an industry as fast-paced as software development. On some level it actually IS quite pragmatic, but on another level I am annoyed by the phrase. It has become a mantra for our whole industry which hasn't changed said industry for the better. The problem is this, in the guise of sounding like a wise and practical developer, people use it as an exc...
Tips, Programming, Expert 2011-04-06 11:07:43
SkipList in Go
Algorithmic thinking is the must-have in the coding world, so I have been keeping the routine of algorithm practice every week, consolidating my knowledge of data structures on one hand, and improving my coding skills as well. A difficult one happened to be stuck in my mind- Implement SkipList with Go, which took me quite a weekend. Below is the front-line report of how I finally got the hang of it. First, from its concept. Wiki has explained it well. a skip list is a probab...
How big are PHP arrays (and values) really? (Hint: BIG!)
Upfront I want to thank Johannes and Tyrael for their help in finding some of the more hidden memory usage. In this post I want to investigate the memory usage of PHP arrays (and values in general) using the following script as an example, which creates 100000 unique integer array elements and measures the resulting memory usage: <?php $startMemory = memory_get_usage(); $array = range(1, 100000); echo memory_get_usage() - $startMemory, ' bytes'; How much would you expect it to ...
PHP,Array,Memory occupation,Garbage collection 2011-12-16 10:06:04
How One Missing `var` Ruined our Launch
Well, that was a veritable shitstorm (sorry for the language). Long story short, MelonCard was featured today on TechCrunch (along with other500Startups companies, also on VentureBeat, Forbes, …) and everything broke all at once. Every. little. thing. We had rolled out a huge change to MelonCard over the last few days to make our site a seamless “everything just updates†look-good / feel-good product using NodeJS lo...
JavaScript,NodeJs,jQuery,Variable,Scope,Global 2011-11-02 13:01:22
ICO Checklist: How to Launch a Successful Initial Coin Offering
Amongst the many important things that took place in Blockchain industry in 2017, Initial Coin Offerings (ICO) may be considered as the most important of all. ICO helps business/idea owners to pre-sell access to their services or products and in a way to fund the development of those services or products. To help founders/ startups define an effective launch process and provide perspective on everything that they will need on their ICO journey, we have jotted down few points which will serve as...
INITIAL COIN OFFERING,ICO CHECKLIST,INITIAL COIN OFFERINGS (ICO) 2018-05-28 07:32:53
Tips, Tricks and Tools You Will Need to Start Using HTML5 Today
IntroductionHTML5 has been a really hot topic in web development. With the support of most modern browsers available (Safari, chrome, firefox, IE10 and mobile devices), even though the specification has not fully completed yet, but many people have already adopted it as the main technology for all the web development projects. Online giant websites such as Google, facebook, twitter and youtube, they are all built in HTML5!For me, the most exciting features of HTML5 are the canvas and the robust ...
HTML5,Web development,Tools,Tricks,Tips 2011-10-10 05:28:53
Use DTrace to diagnose gdb issues
A few days ago, I installed the newest 64-bit gdb program (version 7.7.1) on Solaris 10 (X86_64 platform) to debug programs. After playing with the gdb a day, I found 2 issues about gdb:(1) The "set follow-fork-mode child" command doesn't take effect. By default, after the parent process forks the child process, the gdb will track the parent process, so this command can make gdb begin to follow the child process. But this command works OK on Linux.(2) The gdb can't parse the 32-bit application c...
Windows 8 Possible Features: Ribbon, Metro, Apps, Cloud Integration
Microsoft may still be plugging away at selling Windows 7 to consumers and the enterprise, but rumors have already started about the next version of the popular operating system—dubbed "Windows 8" by many in the media. Rafael Rivera and Paul Thurrott, two bloggers with a track record of delving into Microsoft's proprietary code base, recently sparked a fresh round of chatter with a dissection of a supposed Windows 8 early build, adding their voices to a discussion that extends back to 201...
Windows 8,New features,Touch,Metro 2011-04-11 02:10:12
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