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• Qt Quick : des interfaces déclaratives hors normes ? Pourquoi ne sont-elles pas encore répandues ?

  Il y a peu, Nokia lançait Qt Quick, un nouveau module de Qt permettant de décrire des interfaces graphiques, un paradigme alors présenté comme assez nouveau. Or, une simple recherche à l'aide de Google montre bien que ces technologies ne sont pas récentes du tout, on trouve par exemple des traces de K, un langage presque ésotérique tellement il est peu connu du grand nombre actuellement, dans les années 90. Qu'est-ce qui a changé depuis lors ? Aussi, on peut remarquer que d'autres technologies phares dans le développement applicatif telles que .NET ou Java en disposent depuis belle lurette. On peut notamment citer XAML (arrivé avec le .NET Framework 3.0) du côté .NET ou Swul pour Java. Qu'ont-ils donc de différent ? Peut-on les comparer ? Ils tentent tous d'atteindre un cer...

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• Can't open Windows 8 after installing ubuntu 12.04

  - by Pyttar

  Yesterday, I tried ubuntu 12.04 LTS and I liked it, so I installed it in my computer with Windows 8. I managed to create a disk partition in Windows and I named it U:\UBUNTU. Then I installed Ubuntu inside this partition, but now, when I try to enter in my Windows 8, it gives me an error message: error: Secure Boot forbids loading module from (hd0,gpt5)/boot/grub/ntfs.mod. error: no such device: 2402319002316706 error: unknow command 'drivemap'. error: invalid EFI file path. Press any key to continue... What can I do? Please I need urgent help, I need to access to Windows 8 and I don't want to lose any data... I checked for the Windows disk and I can se there's all my information there, so, I didn't lose anything. Thanks.

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• NVIDIA driver problem after updating to 12.04

  - by patlan

  As the title says I have problems with the driver after updating to 12.04. The GUI doesnt start anymore, I only see the terminal. I have googled this for a couple of days now and have tried different things like running commands for update, upgrade and tried to uninstall and re-install the NVIDIA-drivers but with no success. No matter what I do I get this message: "Error: API mismatch: the NVIDIA kernel module has version 295.40, but this NVIDIA driver component has version 295.49. Please make sure that the kernel and all NVIDIA driver components has the same version." Is there anyway I can fix this from the terminal?

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• PHP : Symfony sort en version 2.1 définitive, gestion des dépendances avec Composer, formulaires plus efficaces et Mailer plus performant

  Symfony2 est un projet très communautaire, depuis le début (des centaines de bundles étaient disponibles bien avant les premières RC de la 2.0), une tendance qui se confirme : 250 contributeurs, 1 000 pull requests sur GitHub pour la première version beta de Symfony 2.1 ! Après les difficultés de migration avec symfony 1.x, l'équipe a tenté autant que possible de restreindre les changements à même de casser la rétrocompatibilité ; de même, le refactoring du module de formulaires a fait que la version finale de la 2.1 devrait sortir en août, afin de concentrer autant que possible les changements et faire que de plus en plus de code ne devra pas être modifié lors de la migration d'une version à l'autre. Ainsi, n'hésitez pas à tenter de migrer vos applications vers cette beta,...

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• Should you apply a language filter to a randomly generated string?

  - by Tim

  A while back I created a licensing system for my companies new product, as well as all products after this one. As with a lot of licensing systems mine generates codes: 25 character product and registration codes, as well as 16 character module unlocking codes. My question is, since some parts of these generated codes are random should I apply a language filter to it to avoid any embarrassing language being given to the end users? I chose to as it was not difficult at all. But has anyone else ever came across something like this? Any viewpoints as to if it is worth the effort?

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• 100% APC Fragmentation - Cacherouter & Pressflow install

  - by granttoth

  My APC cache has a 100% fragmentation. I'm not quite sure I understand what is going on here. For testing I jacked the available memory up to 512. After a day the total available free memory shows 73% but I still have 100% fragmentation. Would you gurus please look at my settings and offer your advice? Oh, I have read people suggest that I disable apc.stat when possible but when I do the site crashes. I am using the Pressflow build of Drupal 6 with the cacherouter module installed. Edit: (added screenshot) http://i.imgur.com/DqZEX.png

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• Un simple SMS suffirait pour craker l'OS des smartphones de Palm, selon des chercheurs du cabinet In

  Un simple SMS suffirait pour craker l'OS des smartphones de Palm, selon des chercheurs du cabinet Intrepidus Des chercheurs en sécurité du cabinet Intrepidus viennent de dévoiler une nouvelle faille de sécurité qui permet de pirater le système d'exploitation WebOS utilisé dans les terminaux Palm. [IMG]http://djug.developpez.com/rsc/palm-pre.jpg[/IMG] La faille se situe au niveau de module gérant les SMS au niveau de la version 1.3.5 du système PalmOS, qui ne valide pas correctement les entrées/sorties. Les chercheurs ont pu injecter du code HTML en envoyant un certain nombre de SMS spécialement conçus à un terminal équipé du système WebOS. Cela permettra d'ouvrir des sites w...

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• Should single purpose utility app use a class

  - by jmoreno

  When writing a small utility app, that does just one thing, should that one thing be encapsulated in a seperate class, or just let it be part of whatever class/module is used to start the application? I.e. Main would consist of 2 or three lines calling the constructor and then the DoIt methods, nothing else. Or should Main be the DoIt method, with whatever functions it needs added to the main class? Asking because I want to get some alternative perspective, but couldn't find a similar question. If my google-fu is bad and there's a dup, please close.

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• How do I find out which driver a piece of hardware is using?

  - by Oli

  Today I'm trying to figure out which driver is best for my USB wireless dongle. Everywhere I look I just see Ralink STA but this isn't telling me which module this actually is. I'm sure there's a way of looking it up but the computer should be able to tell me, shouldn't it? Meta: This question is open to any piece of hardware, not just my wireless card. It would be helpful if we had a thread of useful diagnostic procedures so that other people can find out what's going on with their hardware.

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• Mount Bluetooth USB in VirtualBox

  - by GoBrewers14

  I originally asked this question here Python Module PyBluez Error and have narrowed it down to basically I can't get VBox to recognize my bluetooth USB. I'm on a MAC OS X 10.9.2. I've installed VirtualBox as well as the Extension Pack and I've installed Ubuntu Desktop 10.04.4 on the VirtualBox. I've searched several Mac forums and this seems to be a common problem w/o a clear solution. Anyways, the question is how can I get VirtualBox to let Ubuntu recognize my bluetooth USB? I've checked 'Enable USB 2.0 EHCI Controller' and added my two bluetooth devices to the filters list. and when I click here to mount the USB I get this error message... Any ideas? Thanks, John

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• Should we use python 2.6 or 2.7 or 3.x?

  - by lamwaiman1988

  The version of python which I am using is 2.6, and there is a 2.7 and 3.x. Usually I use python for some trivial program/snippet. I realize there are some major difference between 2.x and 3.x. I would really like to know, if I am going to make a bigger project with python, which version of python should I use? Should I upgrade to 2.7, or go to 3.x or stay with 2.6? The decision should be based on these terms: Number of user in the internet as a community. More users mean more open-source package and help from them. Functionality. Support from official development team. Compatibility for existing module/package. Thanks!

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• Parallel Threading in Multi-Language Software?

  - by Smarty Twiti

  I'm developing a software that contain many modules/Daemon running in parallel manner, what i'm looking for is how to implement that, i cannot use Thread because some of those modules/Daemon are perhaps implemented in other languages (C,java,C#...). For example I'm using C for Hooking Messages exchanged between Windows kernel and top level applications, Java/C# to use some free library to simply parse XML(for example) or to accept and execute commands over the network..this can be done by C Language but just to improve productivity... Finally for GUI I'm using Ultimate++ (c++) that is like the main process that call and monitor(activate/deactivate/get state) of all other modules/Daemon through an interface. I admit that the development of each module/Daemon in a separate language greatly facilitates maintenance, but especially I am obliged to do that.. What is the best practice way to do that ? All helps will be appreciated.

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• PHP : Symfony sort en version 2.1 définitive, gestion des dépendances avec Composer, formulaires et Mailer plus performants

  Symfony2 est un projet très communautaire, depuis le début (des centaines de bundles étaient disponibles bien avant les premières RC de la 2.0), une tendance qui se confirme : 250 contributeurs, 1 000 pull requests sur GitHub pour la première version beta de Symfony 2.1 ! Après les difficultés de migration avec symfony 1.x, l'équipe a tenté autant que possible de restreindre les changements à même de casser la rétrocompatibilité ; de même, le refactoring du module de formulaires a fait que la version finale de la 2.1 devrait sortir en août, afin de concentrer autant que possible les changements et faire que de plus en plus de code ne devra pas être modifié lors de la migration d'une version à l'autre. Ainsi, n'hésitez pas à tenter de migrer vos applications vers cette beta,...

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• @OnStart & @OnStop

  - by Geertjan

  In applications based on NetBeans Platform 7.2, you'll be able to replace all your ModuleInstall classes with this code: import org.openide.modules.OnStart; import org.openide.modules.OnStop; @OnStart public final class Installer implements Runnable { @Override public void run() { System.out.println("enable something..."); } @OnStop public static final class Down implements Runnable { @Override public void run() { System.out.println("disable something..."); } } } Build the module and the annotations result in named services, thanks to @NamedServiceDefinition: Aside from no longer needing to register the ModuleInstall class in the manifest, performance of startup will be enhanced, if you use the above approach: https://netbeans.org/bugzilla/show_bug.cgi?id=200636

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• Wifi connection problems

  - by user12511

  I have Ubuntu 10.10 installed on a HP Pavilion DV2750ea. The wifi card is an Intel 4965AGN. When I first started using Ubuntu on this laptop it connected wirelessly to the network. Then it suddenly stopped. The Wifi card power light is off and all information says the card is disabled. When the laptop is powered on the wifi power light turns on and stays on until Ubuntu finishes loading. I have replaced the wifi card and the wifi switch module with no change. Please can you help.

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• Updates for the Silverlight Training Kit

  We have had a good response to the free 8 module Silverlight Training Kit we released on Channel 9 back at MIX and that Scott Guthrie announced. We have since updated at the Silverlight 4 Launch with some new content and fixes. Weve also found 2 issues since then that you might run across. Ive corrected these in the source and will update them on the Channel 9 site in our next round (which I hope to include VB version of the courseware, too!) In the meantime, here are the fixes to the 2 problems...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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• Updates for the Silverlight Training Kit

  We have had a good response to the free 8 module Silverlight Training Kit we released on Channel 9 back at MIX and that Scott Guthrie announced. We have since updated at the Silverlight 4 Launch with some new content and fixes. Weve also found 2 issues since then that you might run across. Ive corrected these in the source and will update them on the Channel 9 site in our next round (which I hope to include VB version of the courseware, too!) In the meantime, here are the fixes to the 2 problems...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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• Good book about advanced programming techniques [closed]

  - by Luca

  I am looking to a book covering adavnced programming techniques, covering different practical scenarios and describing the different challanges with the relative solutions. As example, which are the best ways to implement a module for buying on a web application with credit card or how to manage responsivenes for the frontend of the web application itself (dealing with cache, optimeze plugins, etc). On the web there are tons of tutorials about these topics, but I am looking for a book where such cases are collected all together and treated by real professionists. If the book would provide some code samples, that would be a plus (especially if C# .NET), but I am more interested in the approach/solution rather than the code details. I could not find any of these cases in the general book about programming, therefore I hope someone might point me in the right direction. EDIT: I have 4 years experience as web developer, mainly with Microsoft (C#, ASP.NET, SQL Server) and client side technologies (jQuery, HTML/CSS).

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• Debugging random reboots

  - by M132

  I'm running Ubuntu 14.04 with 3.16.1 kernel compiled from source, and when I leave my PC running for a long time, it always reboots after about 4-8 days. Nothing is displayed on the screen, everything just freezes for about 3 seconds (and if there was any sound playing, it keeps repeating over and over), and then reboots. This issue also affects kernels compiled by Canonical's build bots. I already tried to debug it with: rsyslog kexec-tools netconsole kernel module None of them seem to be working however. Are there any better methods to check, what exactly fails here? If there's an issue with RAM for example, shouldn't kernel report this in dmesg, or cause a kernel panic?

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• Sortie de la première beta de Symfony 2.1, Composer, chargement automatique des classes et adoption des règles de codage de la communauté

  Symfony2 est un projet très communautaire, depuis le début (des centaines de bundles étaient disponibles bien avant les premières RC de la 2.0), une tendance qui se confirme : 250 contributeurs, 1 000 pull requests sur GitHub pour la première version beta de Symfony 2.1 ! Après les difficultés de migration avec symfony 1.x, l'équipe a tenté autant que possible de restreindre les changements à même de casser la rétrocompatibilité ; de même, le refactoring du module de formulaires a fait que la version finale de la 2.1 devrait sortir en août, afin de concentrer autant que possible les changements et faire que de plus en plus de code ne devra pas être modifié lors de la migration d'une version à l'autre. Ainsi, n'hésitez pas à tenter de migrer vos applications vers cette beta,...

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• Versioning Java APIs in a non-web context

  - by GAP

  I have modular java application which consists of 40 modules. Some of these modules needs to expose external APIs which other modules or any external integration should be using. The system runs as a desktop application and each module is bundled as a separate jar file. My plan is to bundle the external api as a separate jar. But now the question is: how can I maintain multiple versions of the same API to keep backward compatibility in cases where it can co-exist? Are there any de facto standards on handling APIs versioning out of a web context ?

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• how to use version control

  - by ptamzz

  I'm developing a web site in php in localhost and as modules of it gets completed, I upload it on the cloud so that my friends can alpha test it. As I keep developing, I've lots of files and I lose track of which file I've edited or changed etc. I've heard of something as 'version control' to manage all those but am not sure how it works. So, my question is: Is there an easy way/service/application available to me to track all the edits/changes/new files and manage the files as I develop the website. As Soon as I'm done with a module, I want to upload it on the cloud (I'm using Amazon Cloud Service). If something happens to the new files, I might want to get back to the old file. And maybe, in a click or two, I get to see the files which I've edited or changed since the last one I've uploaded?

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• USB audio device not detected [solved]

  - by user199052

  I've been having problems with USB sound for some time (it used to work about 6 months ago). I find that any USB sound device that I connect is not recognised, and is not listed by aplay -l I've tried disabling pulseaudio. I've tried purging and re-installing alsa-base, pulseaudio, and pavucontrol. To no avail. I'm using 12.04 LTS. I found the solution: 12.04 does not have the needed kernel module snd-usb-hiface this is introduced in the 3.11.1 kernel and installing that on 12.04 gives USB sound for my equipment. How to install the 3.11.1 kernel is given here:- installing 3.11.1 kernel

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• F# - When do you use a class instead of a record when you do not want to use mutable fields?

  - by fairflow

  I'm imagining a situation where you are creating an F# module in a purely functional style. This means objects do not have mutable fields and are not modified in place. I'm assuming for simplicity that there is no need to use .NET objects or other kinds of objects. There are two possible ways of implementing an object-oriented kind of solution: the first is to use type classes and the second to use records which have fields of functional type, to implement methods. I imagine you'd use classes when you want to use inheritance but that otherwise records would be adequate, if perhaps clumsier to express. Or do you find classes more convenient than records in any case?

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• Ubuntu 11.10 boot: xhost: unable to open display

  - by paulus_almighty

  I've had this papercut for a while now, it's time it was fixed. When I boot up Ubuntu, choosing "Ubuntu...generic" from the grub screen, Ubuntu fails to load. It just sits at the driver/module loading screen. What seems to be the most significant line in this output is "xhost: unable to open display" If I choose "Ubuntu...(recovery mode)" from grub then it loads OK. I don't get why this is. Out of interest I tried enabling boot error logging with #/etc/default/bootlogd BOOTLOGD_ENABLE=Yes but I'm not seeing anything in that file. ETA: I've had this problem since fresh install of 11.10. Here's lshw: $ sudo lshw -C display *-display description: VGA compatible controller product: GF104 [GeForce GTX 460] vendor: nVidia Corporation physical id: 0 bus info: pci@0000:03:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:16 memory:f6000000-f7ffffff memory:e0000000-e7ffffff memory:ec000000-efffffff ioport:bf00(size=128) memory:e8000000-e807ffff

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