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• C++ game programming

  - by UnTraDe

  Until now I have been using C# with XNA for 2d and a little bit of 3d games, althought I dont remember that I finished any of them I want to start working with C++. I have a very very little exprience with C++ and my question is where to start? I plated a little bit with SFML and I encountered some problems with performance when I started to build a tile based game. I'm pretty sure that the problem is my code and not the library itself. Is there anything similiar to XNA for C++? I should keep try and work with SFML? Sorry for my bad english! Thanks in advance!

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• Verify SQL Server Stored Procedures are the same on multiple servers

  I have a stored procedure I push down to all of my servers that does a custom backup job and I want to make sure all servers have the same stored procedure. Is there some way to check without going to each server and reviewing the stored procedure? Check out this to find out. New! SQL Monitor 3.0 Red Gate's multi-server performance monitoring and alerting tool gets results from Day One.Simple to install and easy to use – download a free trial today.

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• Learning MySQL Query optimization

  - by recluze

  I've been doing web/desktop/server development for a while and have worked with many databases (mysql mostly). I've come to the point in my career when I need to have someone look at my queries because they're 'kind of slow'. I believe it's now time to start learning query optimization. While I know the basics of index and joins etc., I'm not familiar with how to use, say, the EXPLAIN output to improve performance of my queries. I have not been able to find any online material that starts with the basics and takes me to application. Getting a book is not an option right now so I'm looking for tips about how to proceed with this. I hope this question is general enough not to get closed.

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• My Habitat For Humanity Day Before TechEd 2010 in New Orleans

  Yesterday, I spent the day building what I think are stantions (piles of blocks held together by mortar) to hold a house 5 feet above the ground.  Through twitter, I saw a bunch of people from... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...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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• Which optional features would you recommend for a raytracer? [closed]

  - by locks

  I'm developing a basic triangle mesh raytracer on a short deadline. This means I can't implement every feature I come across, so I'm looking for some feedback about which features you think are most important, taking into consideration the performance of the feature and how much punch it packs. I'm especially looking for optimization techniques that allow for a faster rendering and simple techniques that make a big impact on the final scene quality. Is there any chance of making it fast enough to run in realtime? Here are some example of features I've read about: Anti-aliasing Bounding box Sky box

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• Intuitive "Take Screenshot" key mapping used by games?

  - by Hatoru Hansou

  I recently had a problem testing my game on Linux Ubuntu. The Print key is intercepted by the desktop environment and It never reaches the game. Rather than fighting this, I will simply use any other key or key combination to trigger the screen capture functionality. Now, using the PRINT key is very intuitive because people already expect this behavior. What other keys are a good idea to use to take screenshots? And if possible elaborate why, have other apps/games used that key?

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• Synchronize Azure SQL (cloud) with Azure SQL Emulator (local)?

  - by Sid

  We have an Azure service (web role) that heavily depends on the database. For offline development/testing, we'd like to have the app+db run offline within the emulators. Running the webrole itself within the emulator is straightforward but doing so for the Azure SQL storage isn't so. What is the simplest way to ensure that the cloud Azure SQL database and the emulator/local Azure SQL database are in sync? We can afford some level of staleness for simplicity of sync operation (meaning it's ok for the local copy to be a few hours stale versus mirroring every write as soon as it happens) Thanks

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• Row Versioning Concurrency in SQL Server

  The optimistic concurrency model assumes that several concurrent transactions can usually complete without interfering with each other, and therefore do not require draconian locking on the resources they access. SQL Server 2005, and later, implements a form of this model called row versioning concurrency. It works by remembering the value of the data at the start of the transaction and checking that no other transaction has modified it before committing. If this optimism is justified for the pattern of activity within a database, it can improve performance by greatly reducing blocking. Kalen Delaney explains how it works in SQL Server.

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• DevWeek 2010 is Coming Up

  The time has come again for the UK’s biggest conference for .NET developers and SQL Server professionals. The 13th annual DevWeek conference takes place on 15-19 March 2010 in London. Expert speakers will cover a large range topics, including .NET 4.0, Silverlight 3, WCF 4, Visual Studio 2010, Thread Synchronization, ASP.NET 4.0, SQL Server 2008 R2, Unit Testing, CLR & C# 4.0, Windows Azure, and T-SQL Tips & Tricks. Find out more. span.fullpost {display:none;}

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• Initialize array in O(1) -- how is this trick called?

  - by user946850

  There is this pattern that trades performance of array access against the need to iterate it when clearing it. You keep a generation counter with each entry, and also a global generation counter. The "clear" operation increases the generation counter. On each access, you compare local vs. global generation counters; if they differ, the array has been reset. This has come up in StackOverflow recently, but I don't remember if this trick has an official name. Does it? One use case is Dijkstra's algorithm if only a tiny subset of the nodes has to be relaxed, and if this has to be done repeatedly.

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• Release Notes for 8/23/2012

  Below are the release notes from today's deployment. Improved the inline diff load performance for large diff sets Fixed a few issues related to sending and saving comments within a Pull Request Improved stability of the notification service Fixed an issue when directly linking to a file in the source browser, selected file was not being shown in the tree view Have ideas on how to improve CodePlex? Please visit our suggestions page! Vote for existing ideas or submit a new one. As always you can reach out to the CodePlex team on Twitter @codeplex or reach me directly @mgroves84

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• how to make game objects to contain other objects?

  - by user3161621

  Im pretty undecided about what path to take here. The simplest that comes to mind is just adding a field List to the GameObject class where i would store the things contained in it. But would it be elegant and well tought? And would it be good performance wise?(ofc 99.9% of my objects wouldnt have anything stored in them...) What about deriving a ContainerObject from GameObject? This way only they would have additional fields but then i would have to change many things, my collections of objects would have to become a generic and id have to cast very often into GameObject...

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• Using Friendly Names for SQL Servers via DNS

  Wouldn't it be great if your HR folks only had to put in HR-SQL.mydomain.com for the database connection in their reports? They wouldn't have to remember it was on server Nile and they certainly wouldn't have to change their reports if you migrated their database from the Nile server to the server named Danube. In DNS there are two easy ways to do this. New! SQL Monitor 3.0 Red Gate's multi-server performance monitoring and alerting tool gets results from Day One.Simple to install and easy to use – download a free trial today.

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• F1 Pit Pragmatics

  Occasionally, you just have to man up and deal with complex systems. In fact, sometimes you just need to sacrifice everything else in the name of performance. In Formula 1 Racing, each car has up to 100 sensors, transmitting around 30Gb of data over the course of a race (70% in real-time). This data is then processed by no less than 3 servers (per car) so that the engineers in the pit have access to telemetry, strategy information, timing feeds, while the servers are exposed to carbon dust, oil,...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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• TestRail 1.3 Test Management Software released

  Hello, Gurock Software just announced version 1.3 of its test management software TestRail. TestRail is a web-based test case management software that helps software development teams and QA departments to efficiently manage, track and organize their software testing efforts. TestRail 1.3 comes with various new features and improvements and introduces custom fields. Custom fields allow teams to customize TestRail for their needs and add new fields to TestRail's user interface. TestRail 1.3...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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• Ubuntu 12.04 Nvidia GTX 460 video card installation

  - by aczietlow

  Currently testing Ubuntu 12.04 x64 for our development team. After upgrading from 11.10 I've been having video card issues. I'm using Nvidia GeForce GTX 460. When ever I try to launch Nvidia X server I get the following error message. You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run nvidia-xconfig as root), and restart the X server. I've tried running sudo nvidia-xconfig multiple times and rebooting with no success. I've also tried getting the nvidia-current driver from the x-swat repo sudo apt-add-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get install nvidia-current Followed again by a reboot did nothing for me but knock my resolution down to 800x600 Finally I've tried sudo apt-get purge xserver-xorg sudo apt-get update sudo apt-get install xserver-xorg xserver-xorg-video-all sudo reboot Does anyone have any thoughts or directions they could point me in? To the best of my understanding my video card is suppose to be supported.

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• Ubuntu 12.04 Running Faster Than Normal

  - by One Zero

  I have just installed a new copy of Ubuntu 12.04 on my laptop . i have noticed that my system is running 4x to 5x faster than normal . i have just install Vmware Desktop & centos for testing something . i have noticed that i has installed in just like less than 1 minute !! My system is booting so fast that after starting my laptop i got GUI in like 10 to 13 sec & shutting down in like 2 to 3 sec & all programs ( Firefox , Chrome , etc ) running so fast that i can see .... The only change i made after installation is cat /proc/sys/vm/swappiness 1 How do I configure swappiness? The System is Dell N 5110 i7 with 8GB of RAM So my question is that what should i look for that why my system running very fast ?

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• Does a large (hidden) submenu count towards site content in tems of determining page similarities?

  - by Name

  Basically, I have this site that recently lost a lot of traffic after I optimized the html, the exact reasons to which are uncertain. The graph of impressions (times a page appears on search listings) is continuously going down like an e^-x function. Because the content, previously occupying five pages of tables, now fits within a few paragraph tags, the menu now occupies about 80% of the live html code and I am starting to have doubts wherether this affects the "similar pages" factor that Google punishes. Questions: As far as I know, Google ignores invisible material and the submenus are only visible when hovered over. Has anything at all changed in this area? If I ajax in the submenus, leaving only the main eight menu items to load, will I be punished for "hiding" information? Is the idea worth testing or is it frankly retarded?

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• Separate parts of a game engine [on hold]

  - by user272716

  I'm pretty new in developing videogames. By now I only used SDL with C/C++ to create games. I'm currently learning OpenGL and I realized that to be fluid and easy to maintain the code must be logically separated. Since I want to use OpenGLES on iOS and Android I was wondering how the engine must be imagined in a technical way, some questions came up: Do I have to separate input/update functions from draw functions in different threads? Is there only one proper way to think a game engine/loop? What kind of assets should I use to create a 3D game using openGl ES to get better performance?

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• NetBeans 7.0.1 now in RC

  - by alexismp

  What would a GlassFish release be without a NetBeans version to go with it? The NetBeans team has released the NetBeans IDE 7.0.1 RC 1 which will bring full compatibility with JDK 7 as well as GlassFish 3.1.1 support (this particular RC ships with the soft code freeze build of GlassFish 3.1.1). This 7.0.1 RC 1release also includes numerous bugfixes and performance improvements across all areas and is available from the usual download page and the final version of NetBeans IDE 7.0.1 is expected in late July (once JDK 7 has shipped would be an educated guess). Note that if you're an existing NetBeans 7.0 user you'll be offered with updates to your existing install via the Update Center once 7.0.1 final ships.

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• Moving from Windows 8.1 to Ubuntu - what can I do to replace OneDrive?

  - by gh0st_h4wk

  That's it - I got tired from the constant problems on and about Windows I'm having. Network issues, performance issues, compatibility issues... But I'll seriously miss OneDrive integration (all my files are there). There is some kind of app that can sync with it? And what is the easiest way to install JDK? Through PPAs? Note that I have no plans to keep Windows, I'll just replace the d*mn thing with Ubuntu (maybe Mint).

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• Want to work at Typemock? Were Hiring

  We are looking for a .NET\C++ developer to join the growing Typemock ranks. You need to: Live in Israel know .NET very well (at least 3 years .NET experience VB.NET or C#, and willing to learn the other one) Have some C++ experience (recent sometime in the past couple of years) Be interested in Agile development, unit testing and TDD (you dont have to be an expert. Youll become one on the job.) have very good english PASSION for programming Advantage to C++ hardcore devs but...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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• What is the easiest and fastest way to display an SDL_Surface in a window with SDL2?

  - by Semmu

  I would like to have an SDL_Surface representing the contents of the window, just like in the old days with SDL1.2. What is the best and fastest way to do it in SDL2? What I found is that I need an SDL_Window, an SDL_Renderer for that window, an SDL_Texture to render, and an SDL_Surface to create a texture from. This seems a bit too much to me, since I just want to display a single image on the screen. Not to mention the impact on the performance. On my machine (Lenovo Y510p laptop) this whole procedure takes 9ms, without any memory allocation, only using pre-allocated variables and totally black SDL_Surface. Is there a way I could speed up things?

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• Where can I get the 10k common English dictionary words which Stack overflow uses in related question? [migrated]

  - by itpian.com

  Where can I get the 10k common English dictionary words which Stack overflow uses in related question? Here in SE podcast - http://blog.stackoverflow.com/2008/12/podcast-32/ One of our major performance optimizations for the “related questions” query is removing the top 10,000 most common English dictionary words (as determined by Google search) before submitting the query to the SQL Server 2008 full text engine. It’s shocking how little is left of most posts once you remove the top 10k English dictionary words. This helps limit and narrow the returned results, which makes the query dramatically faster.

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• Letters of recommendation from customers? [closed]

  - by dafrazzman

  I am leaving my job soon and am looking for letters of recommendation. My problem is, I've worked more closely with my customers than my project lead (not technical) or manager (the customers usually talk to me first and rarely even if CC my lead if I don't). So in this case, the customer has seen my work more closely than my leadership and can better attest to my abilities, communication skills, and performance. Are recommendations from customers viable, or will they be largely dismissed? Secondarily, can they be more useful than letters from managers that don't really know your work at all? Note: I already have a letter from the only coworker I've really worked with, but I'm looking to get more than one for good measure.

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