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  • How to morph from a programmer noob to a guru?

    - by didxga
    I have been a programmer for two years, and i am getting hard to level up my skill especially working at legacy code maintenance right now. I think working hard is not enough to elevate my skill, because there are ton of opensource around us, the preoject i have been involved are all mixture of opensources --- from front end to back end from presentation tier to business logic tier. My work is just gluing all these together or something fewer complex which is to collect data from UI to logic module then retrieve the data processed and put it to UI. Sometime there is a need to add some simple logic(like assembling the data to a form that fit business logic interface) while transport data. Could you please give me any suggestion what should i do on the side to improve my skill? Thanks!

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  • Connecting with a BSNL Broadband Internet

    - by user10026
    I am not able to connect my broadband connection with ubuntu and it doesnt work. The connection works fine when I use Windows7 but when i use ubuntu I am not able to access the internet. I followed various steps mentioned in various sites and still could not find a solution. I have installed ubuntu 8.04 in my system. The interface eth0 is not at all detected and when i use the menu system-administrator-network I am not getting an option for wired connection. Just the Wireless connection and Point to Point connection tabs are available.. It's really urgent.. I'll be very happy if u guys can propose to me a working solution to deal with this problem..

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  • enable iptables firewall on linux

    - by user13278061
     Here is a very basic set of instruction to setup a simple iptables firewall configuration on linux (redhat) Enable firewall log as root thenenter the following command, it launch a text gui #> setup first screen: Choose firewall configuration second screen: choose "Enabled" then "Customize" third screen: select you interface in "Trusted Devices", select "Allow Incoming" for "SSH" "Telnet" "FTP" (add eventually other ports, then press "OK" (2 times, then "Quit") At that point the firewall is enabled. You can start/stop/monitor using service iptables start/stop/status Change timeout to changed the tcp established connection timeout #> echo 120 >    /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_timeout_established Monitor connection in iptables tables for example if you want to track a connection establish from a host  152.68.65.207 #> cat /proc/net/ip_conntrack |grep 152.68.65.207

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  • Analyzing I/O Characteristics and Sizing Storage Systems for SQL Server Database Applications

    Understanding how to analyze the characteristics of I/O patterns in the Microsoft® SQL Server® data management software and how they relate to a physical storage configuration is useful in determining deployment requirements for any given workload. A well-performing I/O subsystem is a critical component of any SQL Server application. I/O subsystems should be sized in the same manner as other hardware components such as memory and CPU. As workloads increase it is common to increase the number of CPUs and increase the amount of memory. Increasing disk resources is often necessary to achieve the right performance, even if there is already enough capacity to hold the data. Too many SQL Servers to keep up with?Download a free trial of SQL Response to monitor your SQL Servers in just one intuitive interface."The monitoringin SQL Response is excellent." Mike Towery.

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  • Microsoft lance les Windows Store App Labs, des laboratoires de développement qui seront ouverts dans 30 villes, dont Paris

    Windows Store App Labs : Microsoft se rapproche des développeurs et ouvre des laboratoires de développement dans 30 villes, dont Paris L'un des axes adoptés par Microsoft pour une forte adoption de Windows 8 est le rapprochement avec les développeurs. La société vient d'annoncer le lancement des Windows Store App Labs dans plus de 30 villes du monde. Les Windows Store App Labs seront les lieux de référence où tous les concepteurs d'applications ? développeurs, designers et entrepreneurs ? pourront obtenir des nouveaux appareils Windows 8, de l'aide technique et des conseils sur la conception de l'interface utilisateur. Les développeurs pourront y tester leur...

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  • Which language unifies OOP, both RPC call and Message passing a la Smalltalk, and more ...

    - by user310291
    I hate software editors who pretend to know better what you need and choose for you. Java and c# pretend multiple inheritance is dangerous. That I agree I often use Interface but in some cases I may need multiple inheritance : why not let me choose ? Also today you have to choose between RPC call à la Java and Message passing à la Objective C. Again can't I choose when one or the other is more practical ? So is there any language on earth which will free me from what I want to choose to use dependending on MY context and MY own judgement ?

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  • What technology(s)would be suitable for the front end part of a Java web game?

    - by James.Elsey
    As asked in a previous question, I'm looking to create a small MMO that will be deployed onto GAE. I'm confused about what technologies I could use for the user interface, I've considered the following JSP Pages - I've got experience with JSP/JSTL and I would find this easy to work with, it would require the user having to "submit" the page each time they perform an action so may become a little clumsey for players. Applet - I could create an applet that sits on the front end and communicates to the back end game engine, however I'm not sure how good this method would be and have not used applets since university.. What other options do I have? I don't have any experience in Flash/Flex so there would be a big learning curve there. Are there any other Java based options I may be able to use? My game will be text based, I may use some images, but I'm not intending to have any animations/graphics etc Thanks

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  • Disabling eth0 Module on a Macbook Aluminum

    - by user115488
    The Ubuntu page for my device states the following at the bottom (Known Issues) PowerTOP reports that the module for the 10/100/1000 interface wakes the processor 100+x/sec, accounting for 50% of wakeups on an idle system. This dramatically shortens battery life. One potential solution is to unload this module if you only use wireless. I only use wireless, but I could not find instructions to "unload the module". I have a feeling if I try something related to this, but not the same, battery life will not improve and my eth0 won't work. Anyone have a good guide on this?

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  • What do you use to create sprite graphics? [closed]

    - by SimpleRookie
    Possible Duplicate: What tools do you use for 2D art/sprite creation? What do you folks suggest for creating sprite graphics and sprite sheets? I fiddle with pixelformer and tilestudio. Pixelfromer has a kicken interface, it is quick and easy to make graphics, but a bit cumbersom if you want to make a spritemap. Tile Studio is a interesting mix or tiles and maps, but it is a bit buggy and basic. The Adobe series, just don't really seem to handle tiny graphics well. (there is a previous posting of this question existing, but it is a year old and I was hoping for further/updated input from the community)

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  • Une variante de Kinect adaptée aux ordinateurs sortira en 2011, Asus remplacera Microsoft dans ce projet

    Une variante de Kinect adaptée aux ordinateurs sortira en 2011, Asus remplacera Microsoft dans ce projet PrimeSense. Ce nom ne vous dit rien ? Il s'agit de l'entreprise israélienne qui a vendu les technologies clés du Kinect à Microsoft. Cette dernière travaille actuellement au développement d'un appareil similaire pour les PC... mais sans Microsoft ! A la place, la compagnie a décidé de s'associer avec le fabriquant Asus, pour offrir dans les mois à venir une interface de contrôle gestuel pour les ordinateurs (qui fonctionnera d'ailleurs avec toutes les machines, et pas seulement celles d'Asus). Le produit répondra au nom de Wavi Xtion et ne sera pas axé vers les jeux, mais plutôt vers la navigation (...

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  • 13.10 Desktop - Stop Suspension on Lid Closure

    - by bpmitche
    I'm having a problem with power management settings on my ASUS K52-F Laptop. Upgraded from 13.04 to 13.10 earlier today; closing the laptop lid puts the laptop into suspension (even on AC Power - tried fixing it in gnome power settings, tried fixing it in Cinnamon power settings, tried changing it in DCONF-Editor, but no matter where I change the setting the laptop lid still suspends). After resuming from suspend, I restore to the gnome window/login manager (instead of Cinnamon login manager). Wifi doesn't reconnect, but the icon in Cinnamon shows that I'm connected. IFCONFIG shows that the interface is up and working normally, but still not reconnecting. ifconfig wlan0 down / up doesn't change anything. Any help would be greatly appreciated.

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  • Without using a pre-built physics engine, how can I implement 3-D collision detection from scratch?

    - by Andy Harglesis
    I want to tackle some basic 3-D collision detection and was wondering how engines handle this and give you a pretty interface and make it so easy ... I want to do it all myself, however. 2-D collision detection is extremely simple and can be done multiple ways that even beginner programmers could think up: 1.When the pixels touch; 2.when a rectangle range is exceeded; 3.when a pixel object is detected near another one in a pixel-based rendering engine. But 3-D is different with one dimension, but complex in many more so ... what are the general, basic understanding/examples on how 3-D collision detection can be implemented? Think two shaded, OpenGL cubes that are moved next to each other with a simple OpenGL rendering context and keyboard events.

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  • How to make this design closer to proper DDD?

    - by Seralize
    I've read about DDD for days now and need help with this sample design. All the rules of DDD make me very confused to how I'm supposed to build anything at all when domain objects are not allowed to show methods to the application layer; where else to orchestrate behaviour? Repositories are not allowed to be injected into entities and entities themselves must thus work on state. Then an entity needs to know something else from the domain, but other entity objects are not allowed to be injected either? Some of these things makes sense to me but some don't. I've yet to find good examples of how to build a whole feature as every example is about Orders and Products, repeating the other examples over and over. I learn best by reading examples and have tried to build a feature using the information I've gained about DDD this far. I need your help to point out what I do wrong and how to fix it, most preferably with code as "I would not recomment doing X and Y" is very hard to understand in a context where everything is just vaguely defined already. If I can't inject an entity into another it would be easier to see how to do it properly. In my example there are users and moderators. A moderator can ban users, but with a business rule: only 3 per day. I did an attempt at setting up a class diagram to show the relationships (code below): interface iUser { public function getUserId(); public function getUsername(); } class User implements iUser { protected $_id; protected $_username; public function __construct(UserId $user_id, Username $username) { $this->_id = $user_id; $this->_username = $username; } public function getUserId() { return $this->_id; } public function getUsername() { return $this->_username; } } class Moderator extends User { protected $_ban_count; protected $_last_ban_date; public function __construct(UserBanCount $ban_count, SimpleDate $last_ban_date) { $this->_ban_count = $ban_count; $this->_last_ban_date = $last_ban_date; } public function banUser(iUser &$user, iBannedUser &$banned_user) { if (! $this->_isAllowedToBan()) { throw new DomainException('You are not allowed to ban more users today.'); } if (date('d.m.Y') != $this->_last_ban_date->getValue()) { $this->_ban_count = 0; } $this->_ban_count++; $date_banned = date('d.m.Y'); $expiration_date = date('d.m.Y', strtotime('+1 week')); $banned_user->add($user->getUserId(), new SimpleDate($date_banned), new SimpleDate($expiration_date)); } protected function _isAllowedToBan() { if ($this->_ban_count >= 3 AND date('d.m.Y') == $this->_last_ban_date->getValue()) { return false; } return true; } } interface iBannedUser { public function add(UserId $user_id, SimpleDate $date_banned, SimpleDate $expiration_date); public function remove(); } class BannedUser implements iBannedUser { protected $_user_id; protected $_date_banned; protected $_expiration_date; public function __construct(UserId $user_id, SimpleDate $date_banned, SimpleDate $expiration_date) { $this->_user_id = $user_id; $this->_date_banned = $date_banned; $this->_expiration_date = $expiration_date; } public function add(UserId $user_id, SimpleDate $date_banned, SimpleDate $expiration_date) { $this->_user_id = $user_id; $this->_date_banned = $date_banned; $this->_expiration_date = $expiration_date; } public function remove() { $this->_user_id = ''; $this->_date_banned = ''; $this->_expiration_date = ''; } } // Gathers objects $user_repo = new UserRepository(); $evil_user = $user_repo->findById(123); $moderator_repo = new ModeratorRepository(); $moderator = $moderator_repo->findById(1337); $banned_user_factory = new BannedUserFactory(); $banned_user = $banned_user_factory->build(); // Performs ban $moderator->banUser($evil_user, $banned_user); // Saves objects to database $user_repo->store($evil_user); $moderator_repo->store($moderator); $banned_user_repo = new BannedUserRepository(); $banned_user_repo->store($banned_user); Should the User entitity have a 'is_banned' field which can be checked with $user->isBanned();? How to remove a ban? I have no idea.

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  • Visual Studio 2012 : le développement pour desktop réintroduit dans la version Express gratuite, l'EDI s'ouvre à l'open-source

    Visual Studio 2012 : Microsoft réintroduit le développement d'applications desktop dans la version Express Gratuite, et poursuit son ouverture à l'open-source avec son EDI star Microsoft a écouté. Plusieurs décisions qui viennent d'être prises concernant la prochaine version de son EDI star, Visual Studio 2012 (ex-Visual Studio 11), feront certainement plaisir à la communauté. Tout d'abord, l'interface monochrome (ou plus exactement bicolore dans les gris) pourra être remplacée par une UI « à l'ancienne », avec plus de couleurs. C'est ce qu'a montré avant-hier un VP Microsoft sur la scène du TechEd d'Orlando. Deuxième bonne nouvelle, la version Express (gratuite) de Visual ...

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  • Ultimate SFTP Component 2.0 Build 513 Released

    ComponentSoft is pround to announce that a new version of the SFTP component is released. It can be downloaded at: http://www.componentsoft.net/component/download/?name=UltimateSftpFor more details about the product, please visit: http://www.componentsoft.net/component/sftp.net/About Ultimate SFTP:The Ultimate SSH Secure File Transfer (SFTP) .NET Component offers a comprehensive interface for SFTP, enabling you to quickly and easily incorporate SSH Secure File Transfers in your applications,...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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  • Firefox 4 tiendra-t-il ses très nombreuses promesses ? Début de réponse avec sa première beta prévue

    Mise à jour du 11/05/10 Firefox 4 tiendra-t-il ses très nombreuses promesses ? Début de réponse avec sa première beta prévue pour juin Le cahier des charges de Firefox 4 est bien rempli. On savait déjà que l'interface graphique serait totalement revue (lire ci-avant). On en sait à présent d'avantage sur le reste du navigateur. Mike Beltzner, directeur du développement de la Fondation Mozilla, a fixé hier les nombreux objectifs à atteindre lors d'un Webcast sous forme de feuille de route. L'objectif le plus important reste certainement celui de la puissance et de la vitesse. La puissance d'u...

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  • Moving from mock to real objects?

    - by jjchiw
    I'm like doing TDD so I started everything mocking objects, creating interface, stubbing, great. The design seems to work, now I'll implement the stuff, a lot of the code used in the stubs are going to be reused in my real implementation yay! Now should I duplicate the tests to use the real object implementation (but keeping the mocks object of the sensitive stuff like Database and "services" that are out of my context (http calls, etc...)) Or just change the mocks and stubs of the actual tests to use the real objects....... So the question is that, keep two tests or replace the stubs, mocks? And after that, I should keep designing with the mocks, stubs or just go with real objects? (Just making myself clear I'll keep the mock object of the sensitive stuff like database and services that are out of my context, in both situations.)

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  • Win7 installation on VirtualBox

    - by Will
    I have Ubuntu 12.04 installed on my machine. I also installed Virtualbox so that I can run windows 7. I set my virtual box with 4 GB RAM and 25 GB virtual HDD and after I press Start, it doesnt boot from the windows dvd in the optical drive, but instead i get this error: Failed to open a session for the virtual machine win7. VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED). Result Code: NS_ERROR_FAILURE (0x80004005) Component: Console Interface: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb} Do you have any idea what is it and how I could overcome this? Thank you!

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  • How to implement custom texture formats in Android?

    - by random1337
    What I know: Android can load PNG, BMP, WEBP,... via BitmapFactory. What I want to achive: Load my own 2D file format (e.g. 1-bit texture with a 1-bit alpha channel) and output a RGBA8888 texture. Question: Is there any interface to achieve this?(or any other way) The resulting image is used as a texture for a 3D model. Why would you do that? Saving phone memory and download bandwidth while expanding the texture at runtime to RAM seems reasonable for very simple textures.

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  • Triangles in a C++ STL Vector as an Objective-C member sometimes draws incorrectly in OpenGL ES

    - by Rahil627
    The polygons draw correctly 80% of the time. When it fails, a vertex is dislocated. The polygon is consistently drawn with the wrong vertex. I checked that the vector is correct during initialization, even when it's wrongly drawn. I'm using Cocos2d. The class member: @interface Polygon : CCSprite { std::vector<float> triangleVertices; } The draw function called in [Polygon draw]: + (void)drawTrianglesWithVertices:(const std::vector<float> &)v { //glEnableClientState(GL_VERTEX_ARRAY); glDisable(GL_TEXTURE_2D); glDisableClientState(GL_TEXTURE_COORD_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glVertexPointer(2, GL_FLOAT, 0, &v[0]); glDrawArrays(GL_TRIANGLES, 0, v.size()); //glDisableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_COLOR_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnable(GL_TEXTURE_2D); } Any ideas?

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  • wireless not working, but wired does

    - by user211762
    First of all I'm new to Ubuntu, just bought a laptop with Ubuntu yesterday. I disable wireless networking in the upper right corner, and I don't have option to enable it back. I tried a lot of things and none is seems to work: I installed Wicd network manger, and it says no wireless network found, but i assure you there are several of them as my smart tv can detect them. when I type rfkill list, I get this: 0: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no when I type ifconfig wlan0, I get this: wlan0: error fetching interface information: Device not found

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  • J2ObjC : l'outil de portage de Java vers Objective-C de Google vient d'être mis en ligne, il est open-source

    Google sort J2ObjC un outil open source pour la conversion du code Java en Objective-C Bonne nouvelle pour les développeurs Java qui souhaitent cibler iOS sans toutefois se mettre à l'Objective-C. Google vient de publier sur son blog dédié aux outils open source une application pour la conversion du code Java en code Objective-C. Le projet J2ObjC a pour objectif de permettre aux développeurs de partager facilement du code qui n'est pas utilisé pour l'interface utilisateur (logique métier, accès aux données, etc.) pour les applications Android, les applications Web (qui utilisent le serveur GWT) avec iOS. J2ObjC convertit les classes Java en classes Objective-C qui u...

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  • project with 2 types of interfaces performing different jobs, should they use the same BLL and DAL?

    - by user2080257
    i am working on a project that has two interface (web and desktop), they are not performing the same tasks but they use the same BLL and DAL, the web part using 100% of the BLL and DAL, while the desktop only needs to know about 20% of the BLL and DAL. do you think it is a good idea to let the desktop use the same BLL and DAL as the web, which consequently will lead to ditributing thos BLL and DAL with the desktop application? or you think i'd better create new BLL and DAL projects just to serve the desktop app? but in this case i will fall in the trap of maintaining two copies of the same code!

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  • I can not print on Windows 7 shared printer

    - by lrichard
    For a while I can not print from my Ubuntu 12.04 64 bit pc on a Windows 7 shared printer. Before that everything was ok. The printer is HP LaserJet 1100. The error message is: "File "/usr/lib/cups/backend/smb" not available: No such file or directory" I have tried to reinstall the samba, I have configured the workgroup properly. I have tried to reinstall the printer on the Ubuntu machine with the proper address, or with lpd (I have read somewhere). If I restart the printer on the cups web interface ("Resume Printer") the problem seems to be solved, but not. (The printer seems to be idle, and if I want to print, I still get the error message.) I have checked the share rights on the Windows 7 pc, and I think it is ok.

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  • Instantiating Interfaces in C#?

    - by RealityDysfunction
    I am reading/learning about interfaces in C# at the moment, and thus far I managed to understand how it differs from an abstract class. In the book I am reading the author explains that interfaces are the ultimate abstract class and that it simply sets the standard of certain methods the inheriting class will have, but then provides the following example... static void Main(string[] args) { ... Circle c = new Circle("Lisa"); IPointy itPt = null; try { itPt = (IPointy)c; Console.WriteLine.(itPt.Points); } catch (InvalidCastException e) { Console.WriteLine(e.Message); } ... } The line that absolutely throws me off is the "IPointy itfPt=null;" did he just declare an interface??? I thought interfaces are abstract and can only be inherited? What kind of sorcery is going on here? Thanks for any help, I

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