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• D, Vala or Go for game development [on hold]

  - by Sheosi

  I'm looking forward to choose some compiled language for my 3D engine. The engine it's written in C++, however I would like to help coders by using a language which is good for games. I came with these three: Vala, D and Go. The engine is being made to write as less code as posible, also the "main" language it's going to be Lua so any of these will be the "advanced" one (mainly things which could affect performance or . Because of all this and the fact that I heard that Go is good for small projects I thought it would be a pretty good option, however it does not seems to be made (at least originally) for games and also some say I can have trouble with garbage collection in games. So what do you think? Do you have any experience with any of these three in games? How was it?

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• Silverlight Client for Facebook updated for Silverlight 4 RC

  If you installed the Silverlight Client for Facebook, and also upgraded to the release candidate for Silverlight 4, you may have noticed it stopped working :-). NOTE: Applications compiled on Silverlight 4 beta will not work on machines with Silverlight RC runtime. This is known/expected. As with all pre-release software, this type of breaking can be expected. Weve recently updated the Facebook application, and you will have to re-install. Follow these steps: Uninstall the Silverlight Facebook...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 GTK Problem

  - by Dana Holt

  I am running Ubuntu 12.04 and compiled and installed GTK 3.4 to go through some GTK developer tutorials. Installing this version of GTK has caused problems with Unity. All system dialogs and top bar now have a different (older) look, and when I try to launch Nautilus I get the following message: Gtk-Message: Failed to load module "canberra-gtk-module" Initializing nautilus-open-terminal extension Initializing nautilus-dropbox 1.4.0 Initializing nautilus-gdu extension nautilus: symbol lookup error: nautilus: undefined symbol: ubuntu_menu_proxy_get I have run make uninstall on the newer version of GTK and reinstalled just about every package I can think of, but I am still having the same problem. How can I repair the default Ubuntu GTK libraries? EDIT Also, I noticed that my desktop icons are gone (launcher works), and I can't interact with the desktop. I can't drag any shortcuts to it, etc.

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• I have neither grub.conf nur menu.lst

  - by chris

  Hi, I just compiled my own kernel for the first time. At it is written in a tutorial I now want to check whether the kernel got written into the grub.conf file. Well, I did not find a grub.conf file. So I googled. Answer: Ubuntu does not have grub.conf, but rather has a menu.lst (also stored in /boot/grub). So I looked for that file. But I don't have that one either. So now the question: Where is my GRUB data stored? Im using Ubuntu 10.10 with Kernel 2.6.35-27

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• Installing Disastry's PGP 2.6.3ia multi06 on 12.04 LTS

  - by user291787

  How can I install Disastry's version of PGP 2.6.3ia-multi06 on Ubuntu 12.04 LTS? His site with the source code is here: http://www.spywarewarrior.com/uiuc/disastry/263multi.htm He already compiled a unix version of pgp and it's in the Linux section of his download. How can I either copy and install the binary PGP file, or compile it from the source and install. I have tried several different ways, get no error messages, but when I type pgp -h at the command line, Ubuntu tells me that pgp is not installed. (I already have truecrypt 7.1a and gnupg 1.4.16 installed, but still like the old pgp I have on windows) Thanks! traveler

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• Building TrueCrypt on Ubuntu 13.10

  - by linuxubuntu

  With the whole NSA thing people tried to re-build identically looking binaries to the ones which truecrypt.org provides, but didn't succeed. So some think they might be compiled with back-doors which are not in the source code. - So how compile on the latest Ubuntu version (I'm using UbuntuGNOME but that shouldn't matter)? I tried some tutorials for previous Ubuntu versions but they seem not to work any-more? edit: https://madiba.encs.concordia.ca/~x_decarn/truecrypt-binaries-analysis/ Now you might think "ok, we don't need to build", but: To build he used closed-source software and there are proof-of-concepts where a compromised compiler still put backdoors into the binary: 1. source without backdoors 2. binary identically to the reference-binary 3. binary contains still backdoors

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• Scripting for a C#, multiplayer game

  - by Vaughan Hilts

  I have a multiplayer game written in C# and we've recently been creating a lot of content but have been looking for a way to give our entities customization logic that the designers can hook into. I took a look at this post. With something like this in mind (using C# as a scripting language); I have a few questions. 1) Would one embed the script itself in the entity object before persisting to it to the disk? Is this okay? 2) Would I compile once per scripting then - this seems like a lot of overhead to store all these compiled Assemblies to execute. Any general advice on how to do thigns is welcome, too. These entities are generated on the fly inside the editor and could be composed of a lot of different things.

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• Coolest Twitter Usernames – One Letter @A to @Z Names

  - by Gopinath

  How cool is your Twitter user name? If you think your twitter name is catchy and cool, what do you think about the Twitter usernames that are just one letter? Lucky Tweeple who registered at the inaugural days of Twitter service were able to grab single letter user names. The Atlantic site has compiled details about the twitter user names @a to @z and it’s an interesting read. Catch the details over here at The Atlantic [via im] This article titled,Coolest Twitter Usernames – One Letter @A to @Z Names, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• CON6714 - Mixed-Language Development: Leveraging Native Code from Java

  - by Darryl Gove

  Here's the abstract from my JavaOne talk: There are some situations in which it is necessary to call native code (C/C++ compiled code) from Java applications. This session describes how to do this efficiently and how to performance-tune the resulting applications. The objectives for the session are: Explain reasons for using native code in Java applications Describe pitfalls of calling native code from Java Discuss performance-tuning of Java apps that use native code I'll cover how to call native code from Java, debugging native code, and then I'll dig into performance tuning the code. The talk is not going too deep on performance tuning - focusing on the JNI specific topics; I'll do a bit more about performance tuning in my OpenWorld talk later in the day.

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• How to load with "simplegame" mode after cooking?

  - by Emran Bayati

  i got a problem after i cook my game in Frontend (udk) ! Every thing is ok during the Cook operation i mean i compiled my scripts,it's ok there's no problem in this step,and i cooked my packages it's ok too ! no problem just like last step. so before i package the whole game;i'll lunch it and see if every thing is ok ! but when i load the game it'll load whit the Unreal tournament default game type ! i mean i don't want it to load with this type ! i want it to load with the "simplegame" game type ! i need to say that i set game type to "simplegame" in the Editor from View world Properties Game Type! but still it's loading with Ut game mode when i cook the game ! I just want load my game in "Simplegame" mode after cooked. if any one can help ! plz help ! Tnx Alot Emran Bayati

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• Exporting XNA class library as a DLL file

  - by Will Bagley

  I have downloaded an open source project that I intend to use with my current game. The download came with all the class files from the original project as well as a pre-compiled DLL file representing the project. I was able to easily link this DLL with my current project and get it working just fine, no problems there. The problem I now have is that I want to make a couple of changes to the original libraries (extend its functionality a bit to better suit my needs) and re-export the class library as a DLL again, but I have no clue how to do this. Is there some simple way in VS where I can just take the class library and export/compile it as a DLL file again or is there more to it than that? This seems like something that should be pretty simple but my efforts to find an answer have so far come up with nothing. Thanks in advance.

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• Sql Server Data Tools & Entity Framework - is there any synergy here?

  - by Benjol

  Coming out of a project using Linq2Sql, I suspect that the next (bigger) one might push me into the arms of Entity Framework. I've done some reading-up on the subject, but what I haven't managed to find is a coherent story about how SQL Server Data Tools and Entity Framework should/could/might be used together. Were they conceived totally separately, and using them together is stroking the wrong way? Are they somehow totally orthogonal and I'm missing the point? Some reasons why I think I might want both: SSDT is great for having 'compiled' (checked) and easily versionable sql and schema But the SSDT 'migration/update' story is not convincing (to me): "Update anything" works ok for schema, but there's no way (AFAIK) that it can ever work for data. On the other hand, I haven't tried the EF migration to know if it presents similar problems, but the Up/Down bits look quite handy.

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• Using C++11 for cross-platform Game Engine Development

  - by Samaursa

  Note: This is not a 'give your opinion' question about C++03 and C++11. Our game engine, written in C++03, is designed to be compiled on Windows, OSX and iOS. Linux support is planned for the (very) near future. Our experience is limited when it comes to consoles, which is why I am asking this question. Currently, we are debating whether switching to C++11 and using non-compatible features of the C++11 standard could pose a problem in the near future when we need to port our engine to any of the current gen consoles (perhaps the compilers supported by some console(s) do not support C++11 yet? We don't know...). So, game developers who have experience across multiple platforms and consoles, do you think we should stick to C++03 until the new generation of consoles arrive and most everybody has switched to C++11 standard (have they already?). Or are most consoles using/support compilers (VC++, GCC or variants?) that are already supporting C++11 features?

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• How does the GPL static vs. dynamic linking rule apply to interpreted languages?

  - by ekolis

  In my understanding, the GPL prohibits static linking from non-GPL code to GPL code, but permits dynamic linking from non-GPL code to GPL code. So which is it when the code in question is not linked at all because the code is written in an interpreted language (e.g. Perl)? It would seem to be too easy to exploit the rule if it was considered dynamic linking, but on the other hand, it would also seem to be impossible to legally reference GPL code from non-GPL code if it was considered static! Compiled languages at least have a distinction between static and dynamic linking, but when all "linking" is just running scripts, it's impossible to tell what the intent is without an explicit license! Or is my understanding of this issue incorrect, rendering the question moot? I've also heard of a "classpath exception" which involves dynamic linking; is that not part of the GPL but instead something that can be added on to it, so dynamic linking is only allowed when the license includes this exception?

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• How To: Spell Check InfoPath web form in SharePoint

  - by JeremyRamos

  This post is a compiled version of Steve Cavanagh's blog post on How To: Spell Check an InfoPath form displayed via XmlFormView. Many are not able to follow Steve's instructions due to lack of details. See below a downloadable zip of all changes need installed for your InfoPath Spell Checker. File Contents: CustomSpellCheckEntirePage.js - This is a customized SpellCheckEntirePage.js which includes changes outlined in Steve's post above.   FormServer.aspx - Note that this will replace the exisitng FormServer.aspx - this file acts like a masterpage for all infopath forms. So this change will add the spellchecker to all infopath forms in the sharepoint farm. Only thing i changed here is to add the 'Spell Check' link before and after the form.   ReadMe.rtf - Contains instructions where to copy the files to in your MOSS WFE server.

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• Unable to install VMWare Workstation v8

  - by pst007x

  Installing VMware 8.0.2 64bit Ubuntu 12.04LTS 64bit BETA My Kernel version is: 3.2.0-20-generic pst007x@pst007x-Aspire-5741:~$ sudo sh VMware-Workstation-Full-8.0.2- 591240.x86_64.bundle Installs ok When I launch I am asked to install modules which are compiled and loaded into the running kernel. A window opens VMware Kernel Module Updater This fails on Virtual Network Device ERROR LOG. UPDATE: PATCH. When I try to add patch, following error: pst007x@pst007x-Aspire-5741:~$ sudo sh patch-modules_3.2.0.sh [sudo] password for pst007x: patch-modules_3.2.0.sh: 27: [: workstation8.0.2: unexpected operator patch-modules_3.2.0.sh: 28: [: workstation8.0.2: unexpected operator Sorry, this script is only for VMWare WorkStation 8.0.2 or VMWare Player 4.0.2. Exiting pst007x@pst007x-Aspire-5741:~$ I have fully un-installed, and re-installed. I am installing the correct version. Probably a problem with the patch. VMware installs perfectly on Ubuntu 11.10 This is how I uninstalled.

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• Is "code that generates code" really all that great?

  - by Jaxo

  I was looking through CodePen's "popular pens" and I noticed this cool little spiral animation somebody made with a seemingly ridiculously small amount of code. This is quite impressive until you click the headings for HTML and CSS to show the "compiled" versions of the same code. Suddenly the 3 lines of HAML and ~40 lines of SCSS turns into a gigantic monster of repetition. Here's where my question comes in: Is it acceptable to do something like this in practice? Don't get me wrong - I love using preprocessors to help me write code faster, but in some cases it looks like it's an automatic copy-paste machine.

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• Creating symlink for Postgres

  - by Edwin

  As a developer, I often ssh right into my local database, just to test my application before pushing my code. However, I find that every time I want to access Postgres, I have to type in postgres@ubuntu:~$ /usr/local/pgsql/bin/psql test whereas on my work machine, all I have to do is type postgres@ubuntu:~$ psql --dbname=test --username=user I tried creating a symlink, which was successful, but whenever I try connecting to it through this shortcut, I get the following error message: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"? How do I get this to work? In case it makes any difference, I'm using a self-compiled version of the 9.1.x series.

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• Why are there two different kinds of linking, i.e. static and dynamic?

  - by davidk01

  I've been bitten for the n-th time now by a library mismatch between a build and deployment environment. The build environment had libruby.so.2.0 and the deployment environment had libruby.a. One ruby was built with RVM, the other was built with ruby-build. The reason I ran into a problem was because zookeeper was compiled in a build environment that had the shared library but the deployment environment only had the static library. In all the years I've been writing application code I have never once wished that the binaries I was using where linked against shared objects. What is the reason the dichotomy persists to this day on modern operating systems?

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• Inconsistent mouse cursor status while typing

  - by Jim

  I have noticed that when I type in some programs, Text Editor, Terminal, Bluefish, Gnome Baker, etc. the mouse cursor disappears while I am typing. In other programs like Firefox and LibreOffice, it does not. I am not an application programmer, but I imagined it has to do with their cross-platform nature and the way they are compiled or the toolkits they use. Then I noticed that Gnome-Do behaves the same way, the cursor stays on screen while typing. Why is there inconsistent handling of the mouse cursor, while typing, across different applications? Thank you.

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• How do I make the jump from developing for Android to Windows Phone 7?

  - by Rob S.

  I'm planning on making the jump over from developing apps for Android to developing apps for Windows Phone 7 as well. For starters, I figured I would port over my simplest app. The code itself isn't much of a problem as the transition from Java to C# isn't that bad. If anything, this transition is actually easier than I expected. What is troublesome is switching SDKs. I've already compiled some basic Windows Phone 7 apps and ran through some tutorials but I'm still feeling a bit lost. For example, I'm not sure what the equivalent of a ScrollView on Android would be on Windows Phone 7. So does anyone have any advice or any resources they can offer me to help me make this transition? Additionally, any comments on the Windows Phone 7 app market (especially in comparison to the Android market) would also be greatly appreciated. Thank you very much in advance for your time.

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• My Rhythmbox plugin can't meet the Ubuntu Software Center "my-app" requirements

  - by allquixotic

  At http://developer.ubuntu.com/publish/my-apps-packages/ the following technical requirements are cited: Technical requirements In order for your application to be distributed in the Software Centre it must: Be in one, self-contained directory when installed Be able to be installed into the /opt/ directory (*) Be executable by all users from the /opt/ directory (**) Write all configuration settings to ~/.config/ (This can be one file or a directory containing multiple configuration files) A Rhythmbox plugin cannot satisfy any of these requirements. Rhythmbox has compiled-in locations where it looks for installed plugins. So, is there no way for me to publish my app in Ubuntu Software Center? Would it have to go into Universe repository (which would require tremendously more work and political maneuvering to get it accepted)? I already have all the Debian package infrastructure built for it, so I have made a PPA for it.

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• Compilable modern alternatives to C/C++

  - by Jeremy French

  I am considering writing a new software product. Performance will be critical, so I am wary of using an interpreted or language or one that uses a emulation layer (read java). Which leads me to thinking of using C (or C++) however these are both rather long in the tooth. I haven't used either for a long time. I figure in the last 20 years someone should have created something which is reasonably popular and is nice to code in and is complied. What more modern alternatives are there to C for writing high performance code compiled code? edit in response to comments If C++ is a different beast than it was 15 years ago, I would consider it, I guess I had an assumption that it had some inherent problems. Parallelisation would be important, but probably not across multiple machines.

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• How to link subprograms to a main program's game loop?

  - by Jim

  I recently discovered Crobot which is (briefly) a game where each player codes a virtual robot in a pseudo-C language. Each robot is then put in an arena where it fights against other robots. A robots' source code has this shape : /* Beginning file robot.r */ main() { while (1) { /* Do whatever you want */ ... move(); ... fire(); } } /* End file robot.r */ You can see that : The code is totally independent from any library/include Some predefined functions are available (move, fire, etc…) The program has its own game loop, and consequently is not called every frame My question is roughly : how does it work ? It seems that each robot's code is compiled by the main program and then used in a way I cannot understand. I thought it could yields a thread for each robot, but I have not any proof of this and it seems a bit complicated to achieve it. Any idea how it could work, someone ?

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• Windows RT Secured Only By Microsoft

  That disconcerting news is what Mark Hachman is reporting for Read Write Web. One can more or less safely assume that Microsoft will come up with its own antivirus software for Windows RT. Still, this is a rather unusual state of affairs; why is the company doing this? Hachman explains that apps for the Windows RT operating system can run just fine on Windows 8, but the reverse is not true, unless the Windows 8 app has been specially compiled to run on both Windows 8 and Windows RT. The difference apparently stems from the processors for which the two systems have been optimized. Windows 8 ru...

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