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  • Add Custom Color Changing RGB LED Lighting to Your Next Project

    - by Jason Fitzpatrick
    While this specific project is a really neat back-lit bookcase with customizable LED lights galore, you could easily add the exact same setup to just about anything you wanted to give some LED love. The core of the project is a set of addressable LED modules, an Arduino board, and a simple bit of code. You could use it to make a 70s style mood lighting box, add color changing accents to your media room, or any other number of fun projects just by cloning this project and extending/shortening the wires where appropriate. The control module allows for solid colors, multi-colors, and animations. Hit up the link below for more information including the source code. ExpeditInvaders [via IKEAHacker] HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

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  • Les grandes nouveautés de l'iPhone OS 4.0

    Comme on vous l'avait annoncé précédemment, Apple avait invité certains journalistes pour leur présenter certaines nouveautés de l'iPhone OS 4.0. Voici un tout petit résumé des nouveautés introduites dans iPhone OS 4.0 : 1500 nouvelles API à disposition des développeurs 100 nouvelles fonctionnalités proposées aux utilisateurs Parmi les nouvelles fonctionnalités proposées aux utilisateurs, Apple a mis l'accent sur 7 nouvelles fonctionnalités : Le multi-tache, mais de façon limitée (on reviendra là dessus plus tard) Les dossiers : vous pouvez maintenant avoir plus de 2000 applications réparties dans les dossiers. Au lieu de 180 auparavant. iBooks disponible également sur l'iPhone. Messagerie un...

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  • Le HTML5, 6 à 10 fois moins rapide sur smartphone, d'après une étude : le standard est-il vraiment adapté pour les jeux mobiles ?

    Le HTML5, entre 6 et 10 fois moins rapide sur smartphones que sur bureau Le standard est-il vraiment adapté pour des jeux mobiles ? Le HTML5 sur mobile n'est pas encore tout à fait adapté pour les applications multi-plateformes complexes. C'est en résumé la conclusion d'une étude menée par la société spaceport.io qui souligne par exemple que le rendu des animations en HTML5 sur Smartphones et tablettes est très largement inférieur à celui sur PC de Bureau. Voilà qui a de quoi faire réfléchir sur la dimension "développer une fois, fonctionne partout" semblable à celle de Java et tant vantée pour la technologie Web comme alternative à des développements natifs. D'après cett...

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  • Is there a name for this functional programming construct/pattern?

    - by dietbuddha
    I wrote a function and I'd like to find out if it is an implementation of some functional programming pattern or construct. I'd like to find out the name of this pattern or construct (if it exists)? I have a function which takes a list of functions and does this to them: wrap(fn1, fn2, fn3, fn4) # returns partial(fn4, partial(fn3, partial(fn2, fn1))) There are strong similarities to compose, reduce, and other fp metaprogramming constructs, since the functions are being arranged together and returned as one function. It also has strong similarities to decorators and Python context managers since it provides a way to encapsulate pre and post execution behaviors in one function. Which was the impetus for writing this function. I wanted the ability that context managers provide, but I wanted to be able to have it defined in one function, and to be able to layer function after function on top.

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  • Do you want to learn about developing Web, Mobile and beyond Oracle based applications? Join our online virtual event on November 26th

    - by JuergenKress
    Learn about the latest innovations in Oracle ADF. Our virtual event provides sessions that range from introductory to deep dive, covering Oracle’s strategic framework for developing multi-channel enterprise applications for the Oracle platforms. Multiple tracks cover every interest and every level and include live online Q&A chats with Oracle’s technical staff. For details please visit our registration page. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: ADF,ADF mobile,education,training,Oracle OpenWorld,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • What stack of technologies should I use for my online game?

    - by Vee Bee
    I built a TicTacToe game to learn the .Net MVC3 framework. The basic functionality works (display board, make a move, detect winning move etc.) What I'd like to do is make it a "real" application - well-architected and using the right technology at the right layer. For instance, I'm currently saving every move to the database via a service call, which feels klugey and may become a bottleneck if this was an MMO game. How do you determine a good architecture (or right set of technologies) to use in a situation like this? I'd like to learn not just what to do, but why certain decisions are better than others. I noticed a similar thread here but it just offered opinions without explaining WHY something would be better (e.g. why Node instead of MVC3, etc.)

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  • Android performance/issues with Corona SDK?

    - by B5Fan74
    I know this is a fairly broad question. We are looking to develop a mobile game and want to use a multi-platform engine/SDK. We like what we see with Corona but in doing some reading, we are seeing a lot of references to poor performance on the 'droid platforms. I am unsure how much of this is still relevant? Many of the articles/posts/references/discussions vary in date from 18 months ago to earlier this year. Is there a reason we should not pursue Corona if Android support is important to us? The game is going to be 2D isometric view. Thanks!

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  • I'm trying to install Bruteforce Savedata from the archiver

    - by Jonathan
    I've just installed UBUNTU 12.04 for curiosity purposes. I'm a gamer and I wanted to install Brute force Save data on my comp. So i download it and it open in the Archive manager i go to run the ".exe" but encounter this message Archive: /home/c4/Desktop/Bruteforce_Save_Data_installer.exe [/home/c4/Desktop/Bruteforce_Save_Data_installer.exe] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /home/c4/Desktop/Bruteforce_Save_Data_installer.exe or /home/c4/Desktop/Bruteforce_Save_Data_installer.exe.zip, and cannot find /home/c4/Desktop/Bruteforce_Save_Data_installer.exe.ZIP, period. Please help!

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  • NeoAxis 3D disponible en version 1.3, le moteur de jeu ajoute le SSAO et une meilleure gestion du terrain

    NeoAxis 3D et maintenant disponible en version 1.3 La nouvelle version du moteur de jeu apporte le SSAO, des améliorations sur le terrain et plein d'autres surprises C'est en cette période de Noël que NeoAxis 3D, le moteur de jeu multi-plateforme revient avec une hotte fournit en cadeau pour nous, les développeurs. Tout d'abord, cette version estampillée 1.3 apporte le Screen Space Ambient Occlusion (SSAO). Une technique de rendu temps réel qui est grandement utilisée dans l'industrie pour permettre une approximation efficace de l'ambient occlusion (des ombres sont rajoutés selon le buffer de profondeur).. Celui-ci est implémenté tel un effet après rendu (post processing) afin de garder une bonne synergi...

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  • The resulting .iso doesn't work - MultiCD

    - by Ravi
    Burning a separate CD for each distribution (Ubuntu, Kubuntu etc.) is cumbersome. I found MultiCD which promises me to have a single DVD which can hold several distributions. It is very great tool. Main Problem : The resulting .iso created from multicd doesn't work in a USB pen drive through I haven't tested it in a DVD. Running the .iso through pen drive (I mean booting from pen drive) doesn't work. I cannot even run it in live mode or can install it. Concern : I think if I burn the .iso to a DVD then might it will work. But considering it doesn't work in the pen drive, Will it work on the DVD? So how to fix it? If you know other method to make a multi CD/DVD then please tell me.

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  • Colour scheme for editor - guidelines or medical reccomendations

    - by Kevin D
    Is anyone aware of any studies on what colour scheme is best for use in multi-coloured text based computer work? Specifically in terms of reducing eye strain. For instance is a black back ground and light text best? Should it be a dark colour rather than going all the way to black? I've seen the questions on this site about "which is your favourite" that is not what I am after. I also aware that my question may be to specific asking for a colour scheme, if anyone could link me to some guidelines instead that would be appreciated as well. I'm concious of the fact that anyone using a computer is really using it for text based work but with the multitude of colours used to convey information within our modern IDEs I feel this is a good StackExchange site for this question.

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  • Enhanced LINQ to SQL Compatible ORM Solution from Devart

    Devart has recently announced the release of LinqConnect - an enhanced LINQ to SQL compatible ORM solution with extended functionality, support for SQL Server, Oracle, MySQL, PostgreSQL, and SQLite, its own visual model designer, seamlessly integrating to Visual Studio, and SQL monitoring tool. LinqConnect allows you to quickly create mapping model and generate data access layer code for your application, greatly decreasing development time and eliminating the need to work over routine tasks. It...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Why is Android VM-based? [closed]

    - by adib
    By about 2004, it was clear that ARM is the clear winner for mobile CPUs, beating out MIPS, SH3, and DragonBall. PocketPC (Windows Mobile) applications was natively-compiled (at least most of them - except for .NET compact and its competitors). Likewise, Apple's iOS (named iPhone OS at the time) prefers natively-compiled applications. Then why Android chose a virtual machine based system stack? (the Dalvik VM). Wouldn't it be simpler to just compile applications down to ARM code using GCJ or something? Is the decision influenced by the J2ME-way of doing things, or was just because it's "cool"? Perhaps like most things Java, the culture that prefers multiple levels of indirection and abstractions, they just added another layer of abstraction for "just in case"?

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  • Restoring Virtualbox machine images from old hard drive

    - by memilanuk
    I recently replaced the HDD in my laptop, and re-installed Windows & Ubuntu. Now I want to restore the various virtual machines I had set up on the old HDD, which is mounted in an external USB enclosure. I can read the HDD okay, and the 'bad' spots seemed to be in the Windows partition... but whenever I try to restore the VDI files the copy errors out. I've tried drag-n-drop in Nautilus, I've tried grsync, etc. Always bombs out on the VDI files. I've copied over multi-GB dvd iso images with no problem, but the VDI files always fail the checksums. Any ideas? TIA, Monte

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  • Extending Oracle Fusion Applications with Oracle ADF - Live training

    - by Grant Ronald
    We in the Product Management and Curriculum development team have been working on a new course which explains how to customize Fusion Applications with Oracle ADF.  This focuses on features such as MDS and Web Center Composer and shows how you can customize and personalize a Fusion application through task flows, validation layer and UI.  This new training material is available as on "on-demand" and features live video, demonstrations, whiteboarding and powerpoint. This is a key feature of our stack and understanding how you can harness it will give you incredible power and flexibility in your applications.  

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  • Why can i download anything from the internet?

    - by Nicole
    I get this error message: Archive: /home/nicole/Downloads/iLividSetupV1.exe [/home/nicole/Downloads/iLividSetupV1.exe] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /home/nicole/Downloads/iLividSetupV1.exe or /home/nicole/Downloads/iLividSetupV1.exe.zip, and cannot find /home/nicole/Downloads/iLividSetupV1.exe.ZIP. Why is ubuntu doing this?. I can no longer use my ipod, download songs, download software.

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  • Which parallel pattern to use?

    - by Wim Van Houts
    I need to write a server application that fetches mails from different mail servers/mailboxes and then needs to process/analyze these mails. Traditionally, I would do this multi-threaded, launching a thread for fetching mails (or maybe one per mailbox) and then process the mails. We are moving more and more to servers where we have 8+ cores, so I would like to make use of these cores as much as possible (and not use 1 at 100% and leave the seven others untouched). So conceptually, as an example, it would be nice that I could write the application in such a way that two cores are "continuously" fetching emails and four cores are "continuously" processing/analyzing the emails (since processing and analyzing mails is more CPU intensive than fetching mails). This seems like a good concept, but after studying some parallel patterns, I'm not really sure how this is best implemented. None of the patterns really fit. I'm working in VS2012, native C++, but I guess from a design point of view this does not really matter and just some pointers on how to organize this would be great!

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  • How can I spawn a sprite based on a condition after the game starts?

    - by teddyweedy
    How do I spawn a sprite anytime later in the game when the game starts? I'm using FlashDevelop with Flixel. I did try it in override public function create(): void. It works only in the beginning. I try it using if (FlxG.score == 1) but it doesn't work. I also tried it in override public function update(): void. It works and it is moving but it leaves a sprite making it a multi-sprite. I also did try FlxGroup but to no avail.

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  • The Most Important Person Is the One that Keeps Your PC Running [Comic]

    - by The Geek
    Fixing people’s computers usually makes them appreciate you more, though this might be a little too far. Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic] Asian Temple in the Snow Wallpaper 10 Weird Gaming Records from the Guinness Book

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  • AMD control center doesn't save preferences

    - by Fault
    Everytime when I edit the monitor preferences in AMD to multi-monitor or to a multidesktop, when I press save or apply the program just closes with no errors and the preferences hasn't been saved. If I try to do it via the Displays app that is built-in in ubuntu 11.10 I get the following error: The selected configuration for displays could not be applied required virtual size does not fit available size: requested=(2560, 1024), minimum=(320, 200), maximum=(1280, 1280) I don't know if it helps but my graphics card is a ATI Radeon HD 4800 and my monitors are both 1280x1024. I'm running the proprietary driver without post-release updates because I always get an error trying to install that one.

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  • Splitting Logic, Data, Layout and "Hacks"

    - by fjdumont
    Sure, we all heard of programming patterns such as MVVM, MVC and such. But that isn't really what I'm looking into as Layout, Data and Logic is already pretty much split up (XML-Layout markup, Database, insert your language of choice here). The platform I am developing for is hard to maintain over the updated versions and older OSes. The project significantly grew up over the last few months and dealing with different platform versions really is a pain. For example simply disabling an user interface control for all existing versions took me around 40 lines of code in the logic layer, wrangling around with invocation, delegation, singletons that provide UI handling and so on. Is there a clean way to keep track of those "hacks" by maybe excluding it into separate classes or even packages? Should I overwrite existing framework code in order to handle my requirements correctly? If so, does that concept have a name?

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  • What do you do when one thinks the code isn't complicated enough?

    - by Chris
    After six months of development on a project, our stakeholders have had a "gut check" and have decided that the path that we've been walking (a custom designed application framework and data access layer) is holding us (the developers) back from quickly developing the features they would like to see. After several days of debate management and the development team have decided to scrap the current incarnation and start over using ASP.net MVC, with Entity Framework as the bases of the a 'quick and dirty', lets just get it done project. In days following, our senior developer who has never worked with MVC or Entity Framework has finally gotten into a sample project and done some work. His take on ASP.net MVC, "this is not software engineering". So my question is this; what do you do, when one doesn't think the code is complicated enough?

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  • Oracle VM Virtualbox 4.0 released !

    - by wim.coekaerts
    Another great day for the Virtualbox development team. As is custom, they churn out new features and enhancements at a record pace. You can find the changelog here and you can download your version of 4.0 here. Have at it. A bunch of changes, visually a new management console, a new method to install with a base install and the extention pack (for the add-on drivers and extra features), a number of bugfixes, multi-monitor support for Oracle Solaris and Linux, it's a long list. A great product with a great user base. Check out this survey!

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  • Distributing a very simple application

    - by vanna
    I have a very simple working console application written in C++ linked with a light static library. It is just for testing purposes. Now that the coding part is done, I would like to know the process of actually distributing the program. I wrote a very basic CMakeLists.txt that create makefiles or VS projects to build the sources. I also have a program that calls the static library in order to make some google tests. To me, the distribution of this application goes like this : to developpers : the src directory with the CMakeLists.txt file (multi-platform distribution) with a README.txt and an INSTALL.txt to users : the executable and a README.txt on my git repo : everything mentionned above plus the sources for testing and the gtest external lib A this point : considering the complexity of my application, am I doing it right ? Is there any reference that would formalize this distribution process so I can get better and go further ? Say I would like to add dynamic libraries that can be updated, external libraries like boost : how should I package this to distribute it in a professionnal way ?

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  • unit testing on ARM

    - by NomadAlien
    We are developing application level code that runs on an ARM processor. The BSP (low level code) is being delivered by a 3d party so our code sits just on top of this abstraction layer (code is written in c++). To do unit testing, I assume we will have to mock/stub out the BSP library(essentially abstracting out the HW), but what I'm not sure of is if I write/run the unit test on my pc, do I compile it with for example GCC? Normally we use Realview compiler to compile our code for the ARM. Can I assume that if I compile and run the code with x86 compiler and the unit tests pass that it will also pass when compiled with RealView compiler? I'm not sure how much difference the compiler makes and if you can trust that if the x86 compiled code pass the unit tests that you can also be confident that the Realview compiled code is ok.

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