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• Membership Provider Parte 1

  - by Jason Ulloa

  Asp.net ha sido una de las tecnologías creadas por Microsoft de mas rápido crecimiento por la facilidad para los desarrolladores de crear sitios web. Una de las partes de mayor importancia que tiene asp.net es el contar con el Membership Provider o proveedor de Membrecía, que permite la creación, manejo y mantenimiento de un sistema completo de control y autenticación de usuarios. Para dar inicio a la serie de post que escribiré sobre que es Membeship y cuáles son las funcionalidades principales daremos unas definiciones. Tal como se menciono anteriormente con el membership provider podemos crear un sistema de control de usuarios completos, entre las funcionalidades principales podemos encontrar: * Creación de usuarios * Almacenamiento de información en base de datos * Autenticación, bloqueos y seguimiento Otras de las ventajas que cabe resaltar, es que, algunos de los controles de asp.net ya traen "naturalmente" en sus funciones la implementación del membership provider, tal como el control "Login" o los controles de estado de usuario, lo cual nos permite que con solo arrastrarlos al diseñador estén funcionando. Membership provider es poderoso, pero su funcionalidad y seguridad se ven aumentadas cuando se integra con otros proveedores de asp.net como lo son RoleProvider y Profile Provider (estos los discutiremos en otros post). En la siguiente figura, podemos ver como se distribuyen algunoS provider creados por Microsoft Antes de iniciar con la implementación de membership debes conocer cosas básicas como el espacio de nombres al que pertenece, el cual es: System.Web.Security que se encuentra dentro del ensamblado System.Web. Algo que debe tomarse en cuenta, es que, para poder utilizar cualquiera de los miembros de la clase, debemos hacer la referencia respectiva. Por defecto, el membership provider está diseñado para trabajar directamente con SQL Server, de ahí que su nombre completo seria SQL Membership Provider. Sin embargo, debido a su gran flexibilidad podemos extenderlo a cualquier base de datos o bien modificarlo para adapatarlo a nuestras necesidades. En los siguientes posts, discutiremos como crear un proveedor personalizado utilizando Entity Framework, separando las capas de acceso y datos y cuáles son las principales funciones que podemos aplicar. En palabras básicas y sin entrar muy hondo en el tema, hemos descrito el objetivo del Membership Provider, para todos los que desean ampliar pueden hacerlo en: http://msdn.microsoft.com/es-es/library/system.web.security.membership%28v=vs.100%29.aspx

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• Shared to Dedicated or Amazon CloudFront to improve performances and keep secured?

  - by user978548

  I have a Wordpress which currently takes about 1.8s to 2.5s for the home page to completely load in my country. The page weight is about 700Ko (static content included). In order to increase performances, I'm considering two solutions: Switching to a dedicated host. Using amazon s3 cloudfront to serve static contents. My current shared hosting have servers in a neighboring country but not exactly in mine, and both amazon and the dedicated hosting have some, so that's already an advantage. So considering all that, I still have three questions remaining: Currently having a low traffic (100 unique visitors/days, but growing) will it make a huge difference between my shared hosting and a dedicated server ? Knowing that I already use a cookie-less domain to deliver static contents (but using a redirection to the same server), would using amazon s3 make a real difference ? Talking about the cons of dedicated vs amazon s3, if I choose for the dedicated server something like Ubuntu server and do daily package updates and have only port 80 open, would it be sufficient in terms of security (in comparison with my current shared hosting which manage everything for me) ?

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• Book: DevOps for Developers

  - by Tori Wieldt

  We all know development and operations often act like silos, with "Just throw it over the wall!" being the battle cry. Many organizations unwittingly contribute to gaps between teams, with management by (competing) objectives; a clash of Agile practices vs. more conservative approaches; and teams using different sets of tools, such as Nginx, OpenEJB, and Windows on developers' machines and Apache, Glassfish, and Linux on production machines. At best, you've got sub-optimal collaboration, at worst, you've got the Hatfields and the McCoys.  The book DevOps for Developers helps bridge the gap between development and operations by aligning incentives and sharing approaches for processes and tools. It introduces DevOps as a modern way of bringing development and operations together. It also means to broaden the usage of Agile practices to operations to foster collaboration and streamline the entire software delivery process in a holistic way. Some single aspects of DevOps may not be new, for example, you may have used the tool Puppet for years already, but with a new mindset ("my job is not just to code, it's to serve the customer in the best way possible") and a complete set of recipes, you'll be well on your way to success. DevOps for Developers also by provides real-world use cases (e.g., how to use Kanban or how to release software). It provides a way to be successful in the real development/operations world. DevOps for Developers is written my Michael Hutterman, Java Champion, and founder of the Cologne Java User Group. "With DevOps for Developers, developers can learn to apply patterns to improve collaboration between development and operations as well as recipes for processes and tools to streamline the delivery process," Hutterman explains.

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• Is .Net Going to Die As far as Server Apps and Desktop Apps are concerned? [closed]

  - by Graviton

  Possible Duplicate: What does Windows 8 mean for the future of .NET? The Windows 8 preview doesn't mention .Net, and the demo seems to showcase what HTML, CSS and Javascript can do on Windows 8 OS. The impression I get from watching it is that HTML , Javascript is going to figure prominently in Windows 8, even for the traditional windows desktop applications. That, couple with the fact that there is no mentioning of .Net 5 and Visual Studio 2012 or 2013( MS is pretty quick to announce the next generation VS tools) yet, makes me worry that sooner or later, Microsoft will abandon the .Net platform completely. Yes, not just abandoning Silverlight, but the .Net platform in general. Which means that all the desktop apps, server apps you wrote in .Net is going to be obsolete, much like how VB6 apps are now obsolete. Is .Net going to die? Of course you won't find that all .Net apps stop running tomorrow. But will there be a day-- even when at that time Microsoft is alive and kicking-- when .Net apps are looked upon as legacy apps in the way we perceive VB6 apps? Edit: I've changed the wording of the title, so it's not a dupe of existing question. Please take note.

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• SharePoint Unit Testing and Load Testing Finally?

  - by Kit Ong

  It has always been a real pain to incorporate extensive SharePoint Unit Testing and Load Testing in a project, could Visual Studio 2012 finally make this easier? It certaining looks like it, here's a brief overview on SharePoint support in Visual Studio 2012. Load testing – We now support load testing for SharePoint out of the box. This is more involved than you might imagine due to how dynamic SharePoint is. You can’t just record a script and play it back – it won’t work because SharePoint generates and expects dynamic data (like GUIDs). We’ve built the extensions to our load testing solution to parse the dynamic SharePoint data and include it appropriately in subsequent requests. So now you can record a script and play it back and we will dynamically adjust it to match what SharePoint expects.Unit testing – One of the big problems with unit testing SharePoint is that most code requires SharePoint to be running and trying to run tests against a live SharePoint instance is a pain. So we’ve built a SharePoint “emulator” using our new VS 2012 Fakes & Stubs capability. This will make unit testing of SharePoint components WAY easier.Read more in the link belowhttp://blogs.msdn.com/b/bharry/archive/2012/09/12/visual-studio-update-this-fall.aspx

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• Minimizing data sent over a webservice call on expensive connection

  - by aceinthehole

  I am working on a system that has many remote laptops all connected to the internet through cellular data connections. The application will synchronize periodically to a central database. The problem is, due to factors outside our control, the cost to move data across the cellular networks are spectacularly expensive. Currently the we are sending a compressed XML file across the wire where it is being processed and various things are done with (mainly stuffing it into a database). My first couple of thoughts were to convert that XML doc to json, just prior to transmission and convert back to XML just after receipt on the other end, and get some extra compression for free without changing much. Another thought was to test various other compression algorithms to determine the smallest one possible. Although, I am not entirely sure how much difference json vs xml would make once it is compressed. I thought that their must be resources available that address this problem from an information theory perspective. Does anyone know of any such resources or suggestions on what direction to go in. This developed on the MS .net stack on windows for reference.

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• Page Spamming via locations

  - by codemonkey

  Hi guys I am new here so please be gentle :) I have created a web page for a small mail order business. The page asks the reader if they are in need of a supplier for products in their "area" and if they have ever been let down by a supplier in that "area" etc. It also lists all the local villages and hamlets around the [area] where they can also supply too. This page is dynamically created and the [area] changes and so do the small towns that are local to the town. The page also contains information on the products so the word count vs town names is not stupid. An example of one of the URL would be www.website.com/1014/Halesowen/ It basically covers the whole of the UK so around 800 main towns with 28,000 local villages. The URL changes, so does the title and h1 tags, also each page is Geo coded for that town. My question really is this a good or bad idea? Is it a black hat technique ? I have been told if I have to ask the question then it probably is but the site does supply to all these areas just as any mail order company does and would like to get listed higher in each town for the products. I have seen this done on a few sites but only with a few targeted towns and not the whole of the UK so I would be really interested in your guys thoughts on this. I would post the URL to the site but as I am new here I am a bit unsure of the rules regarding posting links. The whole site needs a lot of other onsite SEO work doing and I will be doing that over the next few weeks. I look forward to your views on this. p.s. If I am allowed to post the URL without getting into trouble so you can see it someone let me know? Thanks in advance

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• Paying it Forward

  - by Liam McLennan

  You’re a talented guy (or girl). You’ve done alright. Years of hard work and stick-to-it-ive-ness have paid off and left you with plenty and an opportunity to make a positive difference to someone else. And then there are people with less than they need. Sometimes all they need to help themselves is a start. Opportunity International provide micro financing to help people grow their small businesses so that they can afford food, shelter, water and education. microfinance to solve poverty   MonsoonerOrLater This June, Chris, Angus (my brother) and I are travelling to India, entering into a rickshaw race and raising money for charity (Opportunity International and Round Table India). The Deccan Odyssey is a nine day rally, racing up the coast of India from Goa to Mumbai in a three wheeled motorbike. If you would like to support us, please make a tax deductable donation via our secure site at GoFundraise. For more information take a look at the MonsoonerOrLater site. If you live in Brisbane come along to An Evening With MonsoonerOrLater. The entry fee includes a three-course Indian meal, live music, henna tattooist, chilli eating competition, best bollywood dance off, Dhalsim Vs Dhalsim Street fighter, Delhi Belly Bet, Auctions and Prizes. All profits go to our charities: Round Table India and Opportunity International.

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• How to Enable User-Specific Wireless Networks in Windows 7

  - by The Geek

  Wireless network settings in Windows 7 are global across all users, but there’s a little-known option that lets you switch them to per-user, so each user has access to only the networks they are allowed to connect to. Here’s how it all works. How is this useful? Maybe you want to prevent a particular user from accessing the internet—if you don’t give them the wireless password, they won’t be able to get online. This could be very useful if you’ve got mini-people playing games on the family PC, but you don’t want them getting online Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker Google Sky Map Turns Your Android Phone into a Digital Telescope Walking Through a Seaside Village Wallpaper

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• Algorithm for dynamically calculating a level based on experience points?

  - by George

  One of the struggles I've always had in game development is deciding how to implement experience points attributed to gaining a level. There doesn't seem to be a pattern to gaining a level in many of the games I've played, so I assume they have a static dictionary table which contains experience points vs. the level. e.g. Experience Level 0 1 100 2 175 3 280 4 800 5 ...There isn't a rhyme or reason why 280 points is equal to level 4, it just is. I'm not sure how those levels are decided, but it certainly wouldn't be dynamic. I've also thought about the possibility of exponential levels, as not to have to keep a separate lookup table, e.g. Experience Level 0 1 100 2 200 3 400 4 800 5 1600 6 3200 7 6400 8 ...but that seems like it would grow out of control rather quickly, as towards the upper levels, the enemies in the game would have to provide a whopping amount of experience to level -- and that would be to difficult to control. Leveling would become an impossible task. Does anyone have any pointers, or methods they use to decide how to level a character based on experience? I want to be fair in leveling and I want to stay ahead of the players as not to worry about constantly adding new experience/level lookups.

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• CodePlex Daily Summary for Monday, October 28, 2013

  CodePlex Daily Summary for Monday, October 28, 2013Popular ReleasesExtJS based ASP.NET Controls: FineUI v4.0beta1: +2013-10-28 v4.0 beta1 +?????Collapsed???????????????。 -????：window/group_panel.aspx??，???????，???????，?????????。 +??????SelectedNodeIDArray???????????????。 -????：tree/checkbox/tree_checkall.aspx??，?????，?????，????????????。 -??TimerPicker???????（????、????ing）。 -??????????????????????（???）。 -?????????????，??type=text/css（??~`）。 -MsgTarget???MessageTarget，???None。 -FormOffsetRight?????20px??5px。 -?Web.config?PageManager??FormLabelAlign???。 -ToolbarPosition??Left/Right。 -??Web.conf...CODE Framework: 4.0.31028.0: See change notes in the documentation section for details on what's new. Note: If you download the class reference help file with, you have to right-click the file, pick "Properties", and then unblock the file, as many browsers flag the file as blocked during download (for security reasons) and thus hides all content.Event-Based Components AppBuilder: AB3.AppDesigner.57.11: Iteration 57.11 (Cleaning): Removing obsolete code parts because of improvements done in this iteration. Removed: LineSourceToTargetDragDropEventHandler, LineSourceToTargetAdorner, LineSourceToTargetToAppDefinitionConverter, LineSourceToPointDragDropEventHandler, LineSourceToPointToAppDefinitionConverter, LinePointToTargetDragDropEventHandler, LinePointToTargetToAppDefinitionConverter, LinePointToTargetAdorner, LineSourceToPointAdorner, LineAdornerBase Improved: EditChartFlow Still missin...Online Radio 3.1: Source Code: Source CodeVidCoder: 1.5.10 Beta: Broke out all the encoder-specific passthrough options into their own dropdown. This should make what they do a bit more clear and clean up the codec list a bit. Updated HandBrake core to SVN 5855.multi: multi (alpha version 0.1): extract the zip to a folder say c:\scripts\multi follow the instructions found in readme.txtAscend 3D: Ascend (2013-10-26): Ascend 2.2.2 Timeline improvements Added ability to specify end frame for TimelineAnimations Added ability to specify a play rate for TimelineAnimations All frame rates are now doubles instead of ints Minor API documentation updatesIndent Guides for Visual Studio: Indent Guides v14: ImportantThis release has a separate download for Visual Studio 2010. The first link is for VS 2012 and later. Version History Changed in v14 Improved performance when scrolling and editing Fixed potential crash when Resharper is installed Fixed highlight of guides split around pragmas in C++/C# Restored VS 2010 support as a separate download Changed in v13 Added page width guide lines Added guide highlighting options Fixed guides appearing over collapsed blocks Fixed guides not...ASP.net MVC Awesome - jQuery Ajax Helpers: 3.5.3 (mvc5): version 3.5.3 - support for mvc5 version 3.5.2 - fix for setting single value to multivalue controls - datepicker min max date offset fix - html encoding for keys fix - enable Column.ClientFormatFunc to be a function call that will return a function version 3.5.1 ========================== - fixed html attributes rendering - fixed loading animation rendering - css improvements version 3.5 ========================== - autosize for all popups ( can be turned off by calling in js...Media Companion: Media Companion MC3.585b: IMDB plot scraping Fixed. New* Movie - Rename Folder using Movie Set, option to move ignored articles to end of Movie Set, only for folder renaming. Fixed* Media Companion - Fixed if using profiles, config files would blown up in size due to some settings duplicating. * Ignore Article of An was cutting of last character of movie title. * If Rescraping title, sort title changed depending on 'Move article to end of Sort Title' setting. * Movie - If changing Poster source order, list would beco...MoreTerra (Terraria World Viewer): MoreTerra 1.11.4: Release 1.11.4 =========== = Compatibility = =========== Updated to add the new tiles/walls in 1.2.1PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.0.7: This is a bug fix release, containing some important fixes! Fixed issue where Session 0 was not detected correctly, resulting in issues when attempting to display a UI when none was allowed Fixed Installation Prompt and Installation Restart Prompt appearing when deploy mode was non-interactive or silent Fixed issue where defer prompt is displayed after force closing multiple applications Fixed issue executing blocked app execution dialog from UNC path (executed instead from local tempo...BlackJumboDog: Ver5.9.7: 2013.10.24 Ver5.9.7 (1)FTP???????、２?????????????shift-jis????????????? (2)????HTTP????、???????POST??????????????????CtrlAltStudio Viewer: CtrlAltStudio Viewer 1.1.0.34322 Alpha 4: This experimental release of the CtrlAltStudio Viewer includes the following significant features: Oculus Rift support. Stereoscopic 3D display support. Based on Firestorm viewer 4.4.2 codebase. For more details, see the release notes linked to below. Release notes: http://ctrlaltstudio.com/viewer/release-notes/1-1-0-34322-alpha-4 Support info: http://ctrlaltstudio.com/viewer/support Privacy policy: http://ctrlaltstudio.com/viewer/privacy Disclaimer: This software is not provided or sup...VsTortoise - a TortoiseSVN add-in for Microsoft Visual Studio: VsTortoise Build 32 Beta: Note: This release does not work with custom VsTortoise toolbars. These get removed every time when you shutdown Visual Studio. (#7940) This release has been tested with Visual Studio 2008, 2010, 2012 and 2013, using TortoiseSVN 1.6, 1.7 and 1.8. It should also still work with Visual Studio 2005, but I couldn't find anyone to test it in VS2005. Build 32 (beta) changelogNew: Added Visual Studio 2013 support New: Added Visual Studio 2012 support New: Added SVN 1.8 support New: Added 'Ch...ABCat: ABCat v.2.0.1a: ?????????? ???????? ? ?????????? ?????? ???? ??? Win7. ????????? ?????? ????????? ?? ???????. ????? ?????, ???? ????? ???????? ????????? ?????????? ????????? "?? ??????? ????? ???????????? ?????????? ??????...", ?? ?????????? ??????? ? ?????????? ?????? Microsoft SQL Ce ?? ????????? ??????: http://www.microsoft.com/en-us/download/details.aspx?id=17876. ???????? ?????? x64 ??? x86 ? ??????????? ?? ?????? ???????????? ???????. ??? ??????? ????????? ?? ?????????? ?????? Entity Framework, ? ???? ...patterns & practices: Data Access Guidance: Data Access Guidance 2013: This is the 2013 release of Data Access Guidance. The documentation for this RI is also available on MSDN: Data Access for Highly-Scalable Solutions: Using SQL, NoSQL, and Polyglot Persistence: http://msdn.microsoft.com/en-us/library/dn271399.aspxLINQ to Twitter: LINQ to Twitter v2.1.10: Supports .NET 3.5, .NET 4.0, .NET 4.5, Silverlight 4.0, Windows Phone 7.1, Windows Phone 8, Client Profile, Windows 8, and Windows Azure. 100% Twitter API coverage. Also supports Twitter API v1.1! Also on NuGet.TerrariViewer: TerrariViewer v7.2 [Terraria Inventory Editor]: Added "Check for Update" button Hopefully fixed Windows XP issue You can now backspace in Item stack fieldsSimple Injector: Simple Injector v2.3.6: This patch releases fixes one bug concerning resolving open generic types that contain nested generic type arguments. Nested generic types were handled incorrectly in certain cases. This affects RegisterOpenGeneric and RegisterDecorator. (work item 20332)New ProjectsAnimation Manager: The Animation Manager project is designed to be a very simple way of adding animations to XAML content.ASP.NET MVC Plugin Framework: Provides a framework for building ASP.NET MVC sites that can use plugins to extend their functionality.Assignment1_Sum_of_two_numbers: 7COM1052 In this project, a simple ASP.NET web page has been created where the user can calculate the sum of two numbers.Car Cost Simulator: Car Cost SimulatorCpuMon: CpuMon is a small windows 4.5.0 program enables live monitoring of system resources via desktop.CruxOMatic: Crux-O-Matic is a full blown application development platform, with support for authentication, authorization, workflows, scaffolding and multi-tenancy.Deppon: deppon projectFlareCAD: FlareCAD is a solid modeling program implementing a new 3D file format that has emphasis on artificial intelligence.FlareGIS: FlareGIS is a mapping program implementing a new 3D file format that has emphasis on artificial intelligence.joge: Toy code for my own amusementJS1: Art Book Review UGCMSBuild Editor: MSBuildEditor provides intellisense for MSBuild Tasks and Properties. mubeen hussain calculation test: The above is a addition calculator designed using ASP.net via Visual Studio 2013.Parallel Web Crawler: In this project demonstrate how can write an effective parallel crawler using TPL api. As the size of the Web grows, it becomes imperative to parallelize apps.Resources Editor: This tool give you a simplified way to edit your resources (ResX files) in combining all cultures in the same view.SID Translator: Make Active Directory SID Translation easier : - Translate a SID from String to Hex or Hex to String - Compare two SID, no matter the format.TestGaneshmj: This is test summary.Webcam Security Application: Webcam Security is an application which utilizes an ordinary camera. This application is still under construction as new features will be added as time goeswebprojects: webprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswebprojectswindowsphoneproject: windowsphoneprojectwindowsphoneprojectwindowsphoneprojectwindowsphoneprojectwindowsphoneprojectWSAD module 2013: university project codeXml Visualiser: This tool can edit a simple xml file into a multi tables like DataBase

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• Representing heightmaps, on disk and when drawing

  - by gardian06

  This is a conglomeration question when answering please specify which part you are addressing. I am looking at creating a maze type game that utilizes elevation. I have a few features I would like to have, but am unsure as to some of the implementation. I have done work doing fileIO maze generation (using a key to read the file, and then generate the level based on that file), but I am unsure how to think about this with elevation in the mix. I think height maps might be a good approach, but don't know how to represent them effectively. for a height map which is more beneficial XML(containing h[u,v] data and key definition), CSV (item1 is key reference, item2 is elevation), or another approach that I have not thought of yet? When it comes to placing the elevation values themselves what kind of deltah values are appropriate to have it noticeable at about a 60degree angle while not really effecting gravity driven physics (assuming some effect while moving up/down hill)? I am thinking of maybe going to procedural generation at some point, but am wondering if it is practical to have a procedurally generated grid (wall squares possibly same dimensions as the open space squares), or if designing to a thin wall open spaces is better? this decision will effect the amount of work need on the graphics end for uniform vs. irregular walls. EDIT: Game will be a elevation maze shooter. Levels/maps will be mazes with elevation the player has to negotiate. Elevations will have effects on "combat" vision, and movement.

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• What are the advantages of programming to under an OS as opposed to bare metal executive?

  - by gby

  Assume you are presented with an embedded system application to program, in C, on a multi-core environment (think a Cavium or Tilera) and need to choose between two environments: Code the application under Linux in SMP mode or code the application under a thin bare metal executive (something like a very minimal RTOS), perhaps with a single core running UP Linux that can serve control tasks. For the purpose of this question, assume that both environment provide the same level of performance guarantees in any measurable aspects of run time performance, including number of meaningful action per second, jitter, latency, real time considerations - the works. (and yes, I realize this is by far not a trivial assumption at all, bare with me). How would you justify going with a Linux SMP based solution rather then a bare metal thin executive solution? The question may seems silly. It certainly seems obvious to me - but I have to convince someone that does not think the same. Could you help make a list of arguments in favor of choosing a real SMP aware OS (Linux) vs. a bare metal executive assuming performance guarantees are NOT an issue? Many thanks

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• Ray Tracing concers: Efficient Data Structure and Photon Mapping

  - by Grieverheart

  I'm trying to build a simple ray tracer for specific target scenes. An example of such scene can be seen below. I'm concerned as to what accelerating data structure would be most efficient in this case since all objects are touching but on the other hand, the scene is uniform. The objects in my ray tracer are stored as a collection of triangles, thus I also have access to individual triangles. Also, when trying to find the bounding box of the scene, how should infinite planes be handled? Should one instead use the viewing frustum to calculate the bounding box? A few other questions I have are about photon mapping. I've read the original paper by Jensen and many more material. In the compact data structure for the photon they introduce, they store photon power as 4 chars, which from my understanding is 3 chars for color and 1 for flux. But I don't understand how 1 char is enough to store a flux of the order of 1/n, where n is the number of photons (I'm also a bit confused about flux vs power). The other question about photon mapping is, if it would be more efficient in my case to store photons per object (or even per Object's triangle) instead of using a balanced kd-tree. Also, same question about bounding box of the scene but for photon mapping. How should one find a bounding box from the pov of the light when infinite planes are involved?

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• Why do I get this Debug Assertion Failed? Expression: list iterator not dereferenceable [migrated]

  - by Karel

  I'm trying this example in the (translated to dutch) book of Bjarne Stroustrup (C++): #include <vector> #include <list> #include "complex.h" complex ac[200]; std::vector<complex> vc; std::list<complex> l; template<class In, class Out> void Copy(In from, In too_far, Out to) { while(from != too_far) { *to = *from; ++to; ++from; } } void g(std::vector<complex>& vc , std::list<complex>& lc) { Copy(&ac[0], &ac[200], lc.begin()); // generates debug error Copy(lc.begin(), lc.end(), vc.begin()); // also generates debug error } void f() { ac[0] = complex(10,20); g(vc, l); } int main () { f(); } ** Compiling and Linking goes successful (0 errors/warnings)** But at runtime I get this error: Debug Assertion Failed! Program: path to exe file: \program files\ms vs studio 10.0\vc\include\list Line: 207 Expression: list iterator not dereferenceable For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts. (Press retry to debug the application)

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• Is ActionScript 3 used by Serious Indie Developers?

  - by Puedes

  This question is for dedicated independent game developers: My dream is to be a game developer. I am a senior in high school who has taken Computer Science for all four years. I have used Java the whole time, but last year I started using PHP and ActionScript 3 (with Flixel). I also used Game Maker for a brief period. I apologize for this, I wanted to get that out of the way and clarify the fact that I have experience of some kind with game development. I am stuck at the moment because I don't quite know what language to use to develop games at a professional level. I am seriously interested in becoming a dedicated game developer, but this issue is really bothering me. I would like to know what the best option would be for my case, based on your experiences. Any advice is appreciated. Things to consider: I am only interested in making 2D games (I am not worried about 3D support) It would be ideal to use something that can be ported to multiple platforms (so as not to run into this problem later) I can't seem to figure out what the industry likes to use So far, this is what I have: I can't decide if it would be wise to stick with ActionScript 3, or move to C++ I know Flash would be for browser games, but what if I want to make a downloadable game, like Plants Vs. Zombies or Super Crate Box? Would Flash be a smart choice for standalone games, or did they use something else? Thank you for reading this, as I would like to stop worrying about this and make some games! Also, I hope this wasn't all over the place :) tl;dr Should I move ahead with AS3 or use something else i.e. C++

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• The year ahead, 2011.

  - by andrewstopford

  When I look back at last years look at 2010 my blogging rate has not changed much (I suspect this is largely down to using Twitter a lot) but my interests this year have developed a lot further. My view on 2010 would be that Microsoft would commit more to OSS, while I wanted to see more hires from that audience and more projects on Outercurve foundation instead there has been support for JQuery and Gems (aka NuGet). I would love to see more from Microsoft on the OSS front in 2011, Outercurve could become like the Apache foundation with enough support. Staying on the Microsoft front I predict that 2011 will bring the following. C# 5.0 will go RTM (still no MOP though) The next release of VS will go alpha or early beta MS MVC 4.0 (I think by Mix time) and maybe this release will get a command line. I also suspect that Microsoft will want to target the tablet market with WP7 in 2011 (Mix 2011 maybe...). I also predict the following Java will fork with Apache\Google. Oracle will then take them to court and the whole thing will boil right through 2011 (Java have had enough court cases, come on guys). Java and the JVM will sadly not move forward at all in 2011. Android will cause Apple a serious headache, both the smartphone and tablet market will see figures cut from Apple share. By the end of 2011 the current 70% apple market share will be 40-50%. As the features, performance and price of Android devices gets ever better Apple will be left out in the open. Lastly after 7 years I intend to move this blog away from weblogs. In 2011 I will be exploring Java, Ruby\Rails and Android and such subjects don't make sense to talk about it here. See you in 2011.

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• Language Niches and Niche Libraries

  - by Roman A. Taycher

  "Everyone Knows" ... ... that c is widely used for low level programs in large part because operating system/device apis are usually in c. ... that Java is widely used for enterprise applications in large part because of enterprise libraries and ide support. ... that ruby is widely used for webapps thanks in large part because of rails and its library ecosytem But lets go into to details what are the specific niches and subniches. Especially with respect to libraries. Where might you embed lua for application scripting versus python. Where would you use Java vs C#. Which languages do different scientists use? Also which languages have libraries for these subniches? Things like bioperl/scipy/Incanter. Please no flamewars about how nice each language or environment is. This is where they used. Also no complaints about marketing/PHBs. (Manually migrated) I asked this question again after it was closed on stackoverflow.com

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• links for 2011-03-16

  - by Bob Rhubart

  InfoQ: Randy Shoup on Evolvable Systems Randy Shoup discusses evolvable systems: how to run different versions of a system in parallel during migrations, decoupling a system with events, schemas at eBay and much more. (tags: ping.fm) InfoQ: Heresy & Heretical Open Source: A Heretic's Perspective Douglas Crockford presents a debate existing around XML and JSON, and the negative effect of the Intellectual Property laws on open source software. (tags: ping.fm) Oracle Technology Network Architect Day: Toronto Registration is now open for this day-long event, to be held at the Sheraton Centre Toronto on April 21. Registration is free, but seating is limited.  (tags: oracle otn enterprisearchitecture cloudcomputing) Harry Foxwell: The Cloud is STILL too slow! "Considering the exponentially growing expectations of what the Web, that is, "the Cloud", is supposed to provide, today's Web/Cloud services are still way too slow." - Harry Foxwell (tags: oracle otn cloud) Architecture Standards - BPMN vs. BPEL for Business Process Management (Enterprise Architecture at Oracle) Path Shepherd gives props to Mark Nelson. (tags: entarch oracle otn) ORCLville: Oracle Fusion Applications: If I Were An AppsTech Oracle ACE Director Floyd Teter says:" If I were an Oracle AppsTech with an eye on Fusion Applications, there are three tools/technologies I'd want... (tags: oracle otn oracleace fusionapplications) Events OverviewYour brain on #entarch - OTN Architect Day - Denver - March 23 This free event includes sessions on Cloud Computing, Application Portfolio Rationalization, System Optimization, Event-Driven Architecture, plus food, beverages, an lots of peer networking. Seating is limited. (tags: oracle entarch otn)

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• Huge Opportunity in Small Things

  - by Tori Wieldt

  Addressing the strong demand for Java in the embedded market, Oracle is hosting a new Java Embedded @ JavaOne event in San Francisco October 3-4. The event allows decision makers to attend the Java Embedded @ JavaOne business-focused program, while their IT/development staff can attend the technically-focused JavaOne conference. [Obligatory comment about suits & ties vs. jeans & T-shirts removed.] The two-day event includes keynotes, sessions and demonstrations. In his keynote this morning, Judson Althoff, Senior Vice President of Worldwide Alliances and Channels and Embedded Sales, Oracle explained  Devices are all around us - on 24x7, connected all the time. The explosion of devices is the next IT revolution. Java is the right solution for this space. Java embedded solutions provide a framework to  provision, manage, and secure devices.  Java embedded solutions also provide the ability to aggregate, process and analyze multitude of data.  Java is one platform to program them all. Terrance Barr, Java Evangelist and Java ME expert is enthusiastic about the huge opportunity, "It's the right time and right place for Java Embedded," he said, "Oracle is looking for partners who want to take advantage of this next wave in IT." The Embedded space continues to heat up. Today, Cinterion launched the EHS5, an ultra compact, high-speed M2M communication module providing secure wireless connectivity for a wide variety of industrial applications. Last week, Oracle announced Oracle Java ME Embedded 3.2, a complete client Java runtime Optimized for resource-constrained, connected, embedded systems, Oracle Java Wireless Client 3.2, Oracle Java ME Software Development Kit (SDK) 3.2, and Oracle Java Embedded Suite 7.0 for larger embedded devices. There is a huge opportunity in small things. 

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• Bounding volume hierarchy - linked nodes (linear model)

  - by teodron

  The scenario A chain of points: (Pi)i=0,N where Pi is linked to its direct neighbours (Pi-1 and Pi+1). The goal: perform efficient collision detection between any two, non-adjacent links: (PiPi+1) vs. (PjPj+1). The question: it's highly recommended in all works treating this subject of collision detection to use a broad phase and to implement it via a bounding volume hierarchy. For a chain made out of Pi nodes, it can look like this: I imagine the big blue sphere to contain all links, the green half of them, the reds a quarter and so on (the picture is not accurate, but it's there to help understand the question). What I do not understand is: How can such a hierarchy speed up computations between segments collision pairs if one has to update it for a deformable linear object such as a chain/wire/etc. each frame? More clearly, what is the actual principle of collision detection broad phases in this particular case/ how can it work when the actual computation of bounding spheres is in itself a time consuming task and has to be done (since the geometry changes) in each frame update? I think I am missing a key point - if we look at the picture where the chain is in a spiral pose, we see that most spheres are already contained within half of others or do intersect them.. it's odd if this is the way it should work.

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• Should we choose Java over C# or we should consider using Mono?

  - by A. Karimi

  We are a small team of independent developers with an average experience of 7 years in C#/.NET platform. We almost work on small to average web application projects that allows us to choose our favorite platform. I believe that our current platform (C#/.NET) allows us to be more productive than if we were working in Java but what makes me think about choosing Java over C# is the costs and the community (of the open source). Our projects allow us even work with various frameworks as well as various platforms. For example we can even use Nancy. So we are able to decrease the costs by using Mono which can be deployed on Linux servers. But I'm looking for a complete ecosystem (IDE/Platform/Production Environment) that decreases our costs and makes us feel completely supported by the community. As an example of issues I've experienced with MonoDevelop, I can refer to the poor support of the Razor syntax on MonoDevelop. As another example, We are using "VS 2012 Express for Web" as our IDE to decrease the costs but as you know it doesn't support plugins and I have serious problems with XML comments (I missed GhostDoc). We strongly believe in strongly-typed programming languages so please don't offer the other languages and platforms such as Ruby, PHP, etc. Now I want to choose between: Keep going on C#, buy some products and be hopeful about openness of .NET ecosystem and its open source community. Changing the platform and start using the Java open source ecosystem

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• ROI in choosing a CMS solution

  - by Tio

  At the company I work for we need a CMS. The question is, what to choose, for me I think the best solution is to develop one of our own, but we ( my boss and I ), talked about using Drupal. But my boss is completely non-technical, and want's to take a lot of shortcut's which for programming is utterly bad. Too many shortcut's ( and that's why just last Friday we had a bug on one of our systems that caused a lot of panic ). So I'm trying to investigate on the ROI of using already existing CMS solutions VS developing our own customized CMS ( based on a open source library or not ). So that I can sell this to my boss. I'm almost sure that developing a customized CMS is the best for our small company. After a search on google I found this: Choose between a commercial, open source, or customized CMS, but the link is from 2003, it has some truth's, but the world changed a lot from 2003. But I can't seem to find anything else about it. I've developed my own CMS, so I know it's not the most easy thing to do, and that it takes time. Can someone give me any tips? EDIT: With CMS I mean Content Management System, to manage the webpages of our clients.

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• Inspiring the method of teaching. Example- C++ :)

  - by Ashwin

  A year ago I graduated with a degree in Computer Science and Engineering. Considering C++ as the first choice of programming language I have been in the process of learning C++ in many ways. At first - five years back - I had many conceptions, most of which were so abstract to me. It started when I knew almost everything about Structs in C and nothing about Classes in C++. I went through a great time experimenting them all and learning a lot. I had a hard time evaluating Procedural programming vs Object-Oriented Programming. Deciding when to choose Procedural or Object-Oriented Programming took a great deal of patience for me. I knew that I cannot underestimate any of these Programming styles... Though Procedural programming is often a better choice than simple sequential unstructured programming, when solving problems with procedural programming, we usually divide one problem into several steps in order regarded as functions. Then we call these functions one by one to get the result of the problem. When solving problems with Object Oriented Priciples we divide one problem into several classes and form the interaction between them. Evaluating these two at the beginning (as a learner) required a lot of inspiration and thoughts. Instructing to think step by step. Relative concepts to understand deeply. Intensive interests to contrast both solving in both POP and OOP. If you were ever a mentor: What ideas/methods would you teach to students in which it will Inspire them to learn a programming language (in general, computer sciences)?

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• Automatic Generalization

  - by Nick Harrison

  I have been interested in functional programming since college. I played around a little with LISP back then, but I have not had an opportunity since then. Now that F# ships standard with VS 2010, I figured now is my chance. So, I was reading up on it a little over the weekend when I came across a very interesting topic. F# includes a concept called "Automatic Generalization". As I understand it, the compiler will look at your method and analyze how you are using parameters. It will automatically switch to a generic parameter if it is possible based on your usage. Wow! I am looking forward to playing with this. I have long been an advocate of using the most generic types possible especially when developing library classes. Use the highest level base class that you can get away with. Use an interface instead of a specific implementation. I don't advocate passing object around, but you get the idea. Tools like resharper, fxCop, and most static code analysis tools provide guidance to help you identify when a more generalized type is possible, but this is the first time I have heard about the compiler taking matters into its own hands. I like the sound of this. We'll see if it is a good idea or not. What are your thoughts? Am I missing the mark on what Automatic Generalization does in F#? How would this work in C#? Do you see any problems with this?

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