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Low Level Bit Hacks You Absolutely Must Know I decided to write an article about a thing that is second nature to embedded systems programmers - low level bit hacks. Bit hacks are ingenious little programming tricks that manipulate integers in a smart and efficient manner. Instead of performing some operation (such as counting the 1 bits in an integer) by looping over individual bits, these programming nuggets do the same with one or two carefully chosen bitwise operations. To get things going I'll assume that you know what the two's complement binary representation of an integer is and also that you know all the the bitwise operations. I'll use the following notation for bitwise operations in the article: & - bitwise and | - bitwise or ^ - bitwise xor ~ - bitwise not << - bitwise shift left >> - bitwise shift right The numbers in the article are 8 bit signed integers (though the operations work on arbitrary length signed integers) that are represented as two's complement and they are usually named 'x'. Here we go. Bit Hack #1. 1. 2.

Apprendre la guitare, cours débutants morceaux acoustiques sans solfège - Manomaya.com - Manomaya Tools / Troubleshooting / Computer Diagnostics ScanUse our list of free web tools to improve your PC's performance. Is your computer an Open Invitation for HACKERS? Download free version of Sparktrust Inspector to identify vulnerabilities and problems on your computer (and even your WEBSITES)! Click the green 'download now' button above for a diagnostic scan of the Windows registry. Computer Diagnostics refer to the state of a computer system's various components including the hardware, software, operating system or network of systems of which the computer is a part. Different parts of the computer system and different types of technology require and use different diagnostic maintenance systems and management. Download this free scanner to scan your Windows Registry for problems that may lead to system erors and program errors. There are diagnostic programs and processes for different types of computer issues such as those run on demand, usually within operating systems. You can leave a comment, or trackback from your own site.

Programming Methodology - Download free content from Stanford Good PHP Tutorials - Beginner To Advanced PHP Programming Tutorials Best Firefox Download Manager Integration - Thanks for installing FlashGot! - InformAction New to FlashGot? Learn about its features or read the FAQ! V. 1.5.5.99 Download Anything, Replay Anytime. Looks like you are running an older version (1.2.1.22), probably because addons.mozilla.org did not publish the latest version yet. If you find any bug or you'd like an enhancement, before reporting here or here, please check if it's fixed in latest development build. Main good news are: FlashGot is Free Software: if you like it, you can support its progress :)

Optimizing C and C++ Code Embedded software often runs on processors with limited computation power, thus optimizing the code becomes a necessity. In this article we will explore the following optimization techniques for C and C++ code developed for Real-time and Embedded Systems. Many techniques discussed here have roots in the material we covered in the articles dealing with C to Assembly translation. A good understanding of the following articles will help: Premature optimization is the root of all evil Donald Knuth wrote, "Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered. In general, correctness and readability considerations trump code performance issues for most of your code. Adjust structure sizes to power of two Place case labels in narrow range Place frequent case labels first Splitting a switch statement

quot;SOA&quot; PetShop 3.0 Le PetShopDNG 3.0, l'Architecture Orientée Services en action par Julien BRUNET ( Weblog ) Épisode 1 Impression papier : environ 22 pages Version 1.0 Toute ressemblance et détournement d'un PetShop existant est ... volontaire ! Cet article tente de mettre en application la théorie SOA sur l'exemple académique que constitue le site Web d'e-commerce "PetShopDNG". La démarche employée est volontairement "naïve" pour susciter débats et questionnements. "[...] C'est ainsi que Thomas Gil concluait l'excellent PetShopDNG 2.0 . Pour les personnes qui n'ont jamais entendu parler ni de PetShopDNG 1.0 ni de 2.0 "le retour", quelques rappels historiques s'imposent... A l'origine, Sun a présenté à la communauté J2EE l'application Java PetStore , laquelle avait pour objectif d'illustrer les "best practice" d'un développement J2EE dans le domaine de l'e-commerce. PetShop .NET fut la réponse de Microsoft, avec les mêmes objectifs (plus un: démontrer que .NET, "c'est mieux"... :-) " [...] En effet ! " [...]

Document Assembly, Mail Merge and Form Software from Zumesoft Processing.org Tutorial Illustrator, PHP, CSS, Flash | Blog | All | Seconde partie du tutorial. Vous allez maintenant programmer en Actionscript pour animer les movieclips flash . Vous allez apprendre comment calculer une distance dans flash en action script et gérer le score ainsi que l'élimination du joueur. Les fichiers source .fla sont disponibles en téléchargement après chaque étape. Vous pouvez bien sur modifier ce fichier source pour créer le jeu que vous avez envie avec des graphismes améliorés. Grâce à ce tutorial, vous allez créer un jeu flash , en partant de 0. Je vais expliquer dans ce tutorial comment faire un jeu flash en ActionScript , clône de Dance Dance Revolution. Votre illustration ne prend qu'une partie de votre plan de travail et vous voulez exporter seulement cette partie. L'outil le plus pratique et puissant sous Illustrator est sans doute l'outil plume. Pour un de mes projets, je devais charger des données personnalisées depuis une base MySql dans un swf Flash.

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