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• What technology should I concentrate on for mobile development? [closed]

  - by Rob2211

  Firstly, I have many years experience with C# & .NET and some with Java. But, rather than committing to Java and developing native applications for Andriod I have been researching cross-platform deployment technologies. Currently, the most powerful cross-platform technology seems to be Flash, using Adobe AIR to package software as native applications. But given Adobe's announcement that it will discontinue support for the Flash Player on mobile devices it seems foolish (at this late stage) to invest in Flash and ActionScript as a developer. There has been speculation that Microsoft are also planning their exit strategy for Silverlight in favour of HTML5. So, my questions are; What is the most appropriate technology to invest in and learn in order to build cross-platform mobile applications / games while future proofing my skills as a developer? Is HTML5 mature enough to fill the 'Flash void' and be used to start building cross-platform, rich, interactive, networked mobile applications / games now? N.B. For HTML5 read (HTML5/CSS3/JavaScript)

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• The Best Free RSS Readers for Keeping Up With Your Favorite Websites

  - by Lori Kaufman

  RSS stands for “Really Simple Syndication” or “Rich Site Summary.” It’s a document specification that allows you to easily collect and organize web-based news and information from websites. RSS reader applications allow you to follow your favorite websites without having to visit each one separately. For more information about RSS, see our article defining RSS and describing how you can benefit from using it. We’ve collected some links to good desktop and web-based, free RSS applications. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• Q&amp;A: Does it make sense to run a personal blog on the Windows Azure Platform?

  - by Eric Nelson

  I keep seeing people wanting to do this (or something very similar) and then being surprised at how much it might cost them if they went with Windows Azure. Time for a Q&A. Short answer: No, definitely not. Madness, sheer madness. (Hopefully that was clear enough) Longer answer: No because It would cost you a heck of a lot more than just about any other approach to running a blog. A site that can easily be run on a shared hosting solution (as many blogs do today) does not require the rich capabilities of Windows Azure. Capabilities such as simplified deployed and management, dedicated resources, elastic resources, “unlimited” storage etc. It is simply not the type of application the Windows Azure Platform has been designed for. Related Links: Q&A- How can I calculate the TCO and ROI when considering the Windows Azure Platform? Q&A- When do I get charged for compute hours on Windows Azure? Q&A- What are the UK prices for the Windows Azure Platform

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• JavaOne Latin America Early Bird Discount: R$300,00 Off

  - by Tori Wieldt

  Learn how to code in Java more efficiently, pick up Java best practices, and participate in world-class networking at JavaOne Latin America—all for R$300,00 less if you register by 16 November. Have you ever wondered how to construct embedded Java applications for next-generation smart devices? Want to profit from client-side solutions using JavaFX, or simply build modern applications in Java 7? Techniques for these and much more are showcased at JavaOne Latin America—and you’re invited! Choose from more than 50 sessions, multiple demos, plus keynotes and hands-on labs. Topics include: Core Java Platform JavaFX and Rich User Experiences Java EE, Web Services, and the Cloud Java ME, Java Embedded, and Java Card Secure Your Place Now—Register now! Para mais informações ou inscrição ligue para (11) 2875-4163.

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• Displaying thumbnails in google search results for flash games?

  - by serg

  Some sites are somehow displaying video preview thumbnails for pages that contain flash games in google search results. For example search for: site:www.thorgaming.com game I see this only on small sites which makes me believe google is not very happy about it. How do they do it and is it ok with google? I assume they are submitting thumbnails through video sitemaps, but I can't find any information about using them with flash games. I also run a few such sites through rich snipped testing tool and it didn't detect any microdata tags on a page.

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• What is the path to JavaScript mastery?

  - by Eric Wilson

  I know how we start with JavaScript, we cut-and-paste a snippit to gain a little client-side functionality or validation. But if you follow this path in trying to implement rich interactive behavior, it doesn't take long before you realize that you are creating a Big Ball Of Mud. So what is the path towards expertise in programming the interaction layer? What books, tutorials, exercises, and processes contribute towards the ability to program robust, maintainable JavaScript? We all know that practice is important in any endeavor, but I'm looking for a path similar to the answer here: http://stackoverflow.com/questions/2573135/

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• What is a dotted pair's analogy in other Lisp implementations?

  - by octopusgrabbus

  What is Scheme's dotted pair construct analogous to in other Lisp implementations? I can make a vector or list quite easily, and understand those in Clojure, even though the syntax is a little different, like Clojure's vectors use square brackets []. However, seeing a dotted pair for the first time threw me. It almost looks like it is an implementation of of map. I'm not looking for a discussion, but more for use or the dotted pair equivalent in other Lisp dialects, like Clojure, or even Python. Thanks.

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• How can I get accurate collision resolution on the corners of rectangles?

  - by ssb

  I have a working collision system implemented, and it's based on minimum translation vectors. This works fine in most cases except when the minimum translation vector is not actually in the direction of the collision. For example: When a rectangle is on the far edge on any side of another rectangle, a force can be applied, in this example down, the pushes one rectangle into the other, particularly a static object like a wall or a floor. As in the picture, the collision is coming from above, but because it's on the very edge, it translates to the left instead of back up. I've searched for a while to find an approach but everything I can find deals with general corner collisions where my problem is only in this one limited case. Any suggestions?

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• Register now for the FREE Tech Days Online Conference January 20th

  - by Eric Nelson

  The perfect solution to the “January blues” is a good solid few hours learning about great technology. The 'Build an app for that' Online Conference is exactly that, featuring demo-rich sessions on building applications for the browser, Windows 7, and Windows Phone 7. There are three tracks letting you choose which sessions are most relevant to you - whether you're just considering client development with Silverlight, or you've already got stuck in to an advanced project. We'll also explore new form factors such as Phone and Slate, and how to develop touch-based applications. Finally we'll cover the important subject of how to create beautifully designed user interfaces. Register now Agenda:

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• Working out of a vertex array for destrucible objects

  - by bobobobo

  I have diamond-shaped polygonal bullets. There are lots of them on the screen. I did not want to create a vertex array for each, so I packed them into a single vertex array and they're all drawn at once. | bullet1.xyz | bullet1.rgb | bullet2.xyz | bullet2.rgb This is great for performance.. there is struct Bullet { vector<Vector3f*> verts ; // pointers into the vertex buffer } ; This works fine, the bullets can move and do collision detection, all while having their data in one place. Except when a bullet "dies" Then you have to clear a slot, and pack all the bullets towards the beginning of the array. Is this a good approach to handling lots of low poly objects? How else would you do it?

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• JavaFx a-t-il encore une chance de s'imposer face à Flash, Silverlight et l'émergence du HTML 5 ? Ou

  JavaFx a-t-il encore une chance de s'imposer Face à Flash, Silverlight et l'émergence du HTML 5 ? JavaFx a été lancé il y a trois ans pour développer des applications lourdes. Très vite, les développeurs l'ont utilisé pour des applications multimédias et pour faire du web java (notamment des Rich Internet Applications ou RIA). La plateforme - qui se compose du langage de script JavaFX, une plateforme pour client lourd et une intégration avec la machine virtuelle Java - entendait ainsi répondre ainsi aux besoins d'un marché où la compétition fait désormais rage avec, entre autres, des acteurs aussi importants que Flash de Adobe et Silverlight de Microsoft. Selon la

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• How to switch from developer to dba? [on hold]

  - by lamwaiman1988

  I am working as a developer for 3 years and I am thinking of switch to dba. I do not own any certificate nor received any training regarding the daily job of dba. My company also do not offer any chance of work/training related to a dba. If I want to be a dba ( because of the salary and a much stable job than developer ), should I go to get some oracle certificates? I've also heard that you can't be a good dba if you cannot get a good understanding about the working OS such as windows/unix ( and to do that you also need to get some certificate on windows administration or unix administration ) but they recommend book of Rich Stevens over certificate. I am confused on what should I do to make this happen.

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• Why is JavaScript not used for classical application development (compiled software)?

  - by Jose Faeti

  During my years of web development with JavaScript, I come to the conclusion that it's an incredible powerful language, and you can do amazing things with it. It offers a rich set of features, like: Dynamic typing First-class functions Nested functions Closures Functions as methods Functions as Object constructors Prototype-based Objects-based (almost everything is an object) Regex Array and Object literals It seems to me that almost everything can be achieved with this kind of language, you can also emulate OO programming, since it provides great freedom and many different coding styles. With more software-oriented custom functionalities (I/O, FileSystem, Input devices, etc.) I think it will be great to develop applications with. Though, as far as I know, it's only used in web development or in existing softwares as a scripting language only. Only recently, maybe thanks to the V8 Engine, it's been used more for other kind of tasks (see node.js for example). Why until now it's only be relegated only to web development? What is keeping it away from software development?

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• Top 10 Transact-SQL Statements a SQL Server DBA Should Know

  Microsoft SQL Server is a feature rich database management system product, with an enormous number of T-SQL commands. With each feature supporting its own list of commands, it can be difficult to remember them all. MAK shares his top 10 T-SQL statements that a DBA should know. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• 5 Reasons to Upgrade to WebLogic Server 11g

  - by ruma.sanyal

  Do you want to optimize your middleware performance and manageability? Are you looking to modernize your IT infrastructure and lower your total cost of ownership? Don't miss this upcoming Webcast to learn five reasons why you should switch to Oracle WebLogic Server 11g. Mike Lehmann, Senior Director of Product Management for Oracle WebLogic Server, will share best practices and helpful tips for a fast, low-risk upgrade. You will also learn how your company can leverage the optimal support, rich capabilities, and extensive options in Oracle WebLogic Server 11g to: Diagnose and fix performance issues Improve data center utilization and density Shorten application release cycles Run applications in a shared services infrastructure Manage heterogeneous infrastructures Register for this complimentary Webcast.

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• SFML: Monster following player on a straight line

  - by user3504658

  I've searched for this and found a few topics , usually they used a function normalize and using simple vector subtracting which is ok , but how should I do it in sfml ? Instead of using: Movement = p.position() - m.position(); p is the player and m is the monster I used something like this to move on a straight line: sf::Vector2f Tail(0,0); if((mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y) >= (mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x)){ //sf::Vector2f Tail(0,0); Tail.x = mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x; } else if((mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y) <= (mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x)){ //sf::Vector2f Tail(0,0); Tail.y = mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y; } if(!MonsterCollosion()) mMonster.Move(Tail * (TimePerFrame.asSeconds() * 1/2 ) ); It works ok if the the height = the width for the game window, although I think it's not the best looking game when it comes to a moving monster, since it starts fast and then it gets slower so what do you guys advise me to do ?

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• What frameworks are available for cross device 2d game development?

  - by kim3er

  Hi, I'm about to embark on a 2D gaming project. Initially, I'll be targeting iPhone and Facebook, but would like to expand the rollout to include Android (and possibly Windows Phone) in a future phase. Flash and Unity seem to be the most likely suspects, but is one better than the other? Are there pros/cons that may not be obvious at first glance? Are there frameworks that I have not considered? I am primarily a .NET developer, so the Unity C# integration is appealling. But I also have experience with AS3, JavaScript and Objective-C. Rich

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• Oracle Usability Advisory Board, Europe

  - by ultan o'broin

  Earlier this month, I attended the first Oracle Usability Advisory Board meeting in Europe (held in Oracle's big campus in Thames Valley Park, Reading, in the UK). My main interest here of of course was to listen to customer's experiences and requirements in the area of user experience, focusing in on user assistance natch, but also, given my background in the translation and internationalization world, to watch out for issues in those areas that impact on the UX. I met some great people there and took away some powerful UX thoughts about where might go with the area of language in the UI, localizations, and other cultural issues. One area of special interest to me is language as part of the user experience. By language I mean terminology and style of wordings you see in interfaces and help. Are they reflective of how people really work and are used to. What is its relationship to competitiveness and productivity. An area rich in research potential for UX. Debra Lilley Fujitsu (Oracle partner), who also attended, has some good coverage of the event here. On to the next one!

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• Choosing the Right Financial Consolidation and Reporting Solution

  Financial reporting requirements for publicly-held companies are changing and getting more complex. With the upcoming convergence of US GAAP and IFRS, demand for more detailed non-financial disclosures, and the SEC mandate for XBRL financial executives are under pressure to ensure they have the right systems in place to support current and future reporting requirements. Tune into this conversation with Rich Clayton, VP of Enterprise Performance Management and BI products for Oracle, and Annette Melatti, Senior Director of Product Marketing for Financial Applications to learn about the latest market requirements, what capabilities are provided by Oracle's General Ledgers, and how customers can extend their investment in Oracle General Ledger solutions with Oracle's market-leading financial close and reporting products.

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• Is it a bad practice to include all the enums in one file and use it in multiple classes?

  - by Bugster

  I'm an aspiring game developer, I work on occasional indie games, and for a while I've been doing something which seemed like a bad practice at first, but I really want to get an answer from some experienced programmers here. Let's say I have a file called enumList.h where I declare all the enums I want to use in my game: // enumList.h enum materials_t { WOOD, STONE, ETC }; enum entity_t { PLAYER, MONSTER }; enum map_t { 2D, 3D }; // and so on. // Tile.h #include "enumList.h" #include <vector> class tile { // stuff }; The main idea is that I declare all enums in the game in 1 file, and then import that file when I need to use a certain enum from it, rather than declaring it in the file where I need to use it. I do this because it makes things clean, I can access every enum in 1 place rather than having pages openned solely for accessing one enum. Is this a bad practice and can it affect performance in any way?

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• Working with vectors and transformations

  - by user29163

  I am going to write an graphical 2D application that allows user to create polygons and transform them through transformation such as rotation an so on. I was hoping someone can give pro and cons arguments for the different choices I got in my mind. (Its all in Java btw!) a). Represent vectors by filling matrices with 'real' numbers. This means making a matrix datas tructure that supports multiplication, transposing etc b). Make a own vector class, such that I can make a matrix class that support those vectors.

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• The JavaFX Community Site on Java.net

  - by Tori Wieldt

  Community activity surrounding JavaFX has been steadily growing, with tweets, blog posts, and projects increasing in number. We are pleased to announce that there is now a JavaFX community site on Java.net at the following URL: javafxcommunity.com  This site is an aggregator of JavaFX information, where you can find links to JavaFX blog posts, tweets, and other resources.  Gerrit Grunwald and Jim Weaver are the community leaders for this site, and they welcome your feedback on how to make the JavaFX Community site more useful to you! Learn more on Jim Weaver’s Rich-Client Java Blog. 

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• Optimizing hierarchical transform

  - by Geotarget

  I'm transforming objects in 3D space by transforming each vector with the object's 4x4 transform matrix. In order to achieve hierarchical transform, I transform the child by its own matrix, and then the child by the parent matrix. This becomes costly because objects deeper in the display tree have to be transformed by all the parent objects. This is what's happening, in summary: Root -- transform its verts by Root matrix Parent -- transform its verts by Parent, Root matrix Child -- transform its verts by Child, Parent, Root matrix Is there a faster way to transform vertices to achieve hierarchical transform? What If I first concatenated each transform matrix with the parent matrices, and then transform verts by that final resulting matrix, would that work and wouldn't that be faster? Root -- transform its verts by Root matrix Parent -- concat Parent, Root matrices, transform its verts by Concated matrix Child -- concat Child, Parent, Root matrices, transform its verts by Concated matrix

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• SQL Server 2012 RTM Available!

  - by Davide Mauri

  SQL Server 2012 is available for download! http://www.microsoft.com/sqlserver/en/us/default.aspx The Evaluation version is available here: http://www.microsoft.com/download/en/details.aspx?id=29066 and along with the SQL Server 2012 RTM there’s also the Feature Pack available: http://www.microsoft.com/download/en/details.aspx?id=29065 The Feature Pack is rich of useful and interesting stuff, something needed by some feature, like the Semantic Language Statistics Database some other a very good (I would say needed) download if you use certain technologies, like MDS or Data Mining. Btw, for Data Mining also the updated Excel Addin has been released and it’s available in the Feature Pack. As if this would not be enough, also the SQL Server Data Tools IDE has been released in RTM: http://msdn.microsoft.com/en-us/data/hh297027 Remember that SQL Server Data Tool is completely free and can be used with SQL Server 2005 and after. Happy downloading!

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• What is a right datatype in C++ for OpenGL scene representation with use of GLSL

  - by Rarach

  I am programming in C++ OpenGl with GLSL. Until now I have been using a data structure that is composed of std::vector filled with structures of vertexes and with their parameters (position , normal, color ...) as a global variable for all the code. My question is, as I am using VBOs for drawing - is this a good approach to this problem? I am asking because I happen to have a lot of memory related trouble with this structure. I am trying to generate a terrain with a lot of vertices - more than 1 million. This seems to work, but as I refill the buffer I get memory related issues (crushes that occur, more or less randomly). So again the question is, is this a good data structure to use / and look for the faults in my code, or should I change to something else? Or what data structure would be advisable?

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