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• What stack of technologies should I use for my online game?

  - by Vee Bee

  I built a TicTacToe game to learn the .Net MVC3 framework. The basic functionality works (display board, make a move, detect winning move etc.) What I'd like to do is make it a "real" application - well-architected and using the right technology at the right layer. For instance, I'm currently saving every move to the database via a service call, which feels klugey and may become a bottleneck if this was an MMO game. How do you determine a good architecture (or right set of technologies) to use in a situation like this? I'd like to learn not just what to do, but why certain decisions are better than others. I noticed a similar thread here but it just offered opinions without explaining WHY something would be better (e.g. why Node instead of MVC3, etc.)

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• How can be data oriented programming applied for GUI system?

  - by Miro

  I've just learned basics of Data oriented programming design, but I'm not very familiar with that yet. I've also read Pitfalls of Object Oriented Programming GCAP 09. It seems that data oriented programming is much better idea for games, than OOP. I'm just creating my own GUI system and it's completely OOP. I'm thinking if is data oriented programming design applicable for structured things like GUI. The main problem I see is that every type widget has different data, so I can hardly group them into arrays. Also every type of widget renders differently so I still need to call virtual functions.

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• How much C/C++ knowledge is needed for Objective-C/iPhone development?

  - by BFree

  First, a little background. I'm a .Net developer (C#) and have over 5 years experience in both web development and desktop applications. I've been wanting to look into iPhone development for some time now, but for one reason or another always got side tracked. I finally have a potential project on the horizon, and I'm now going full steam ahead learning this stuff. My question is this: I haven't done any C/C++ programming since my schooling days, I've been living in managed land ever since. How much knowledge if any is needed to be successful as an iOS developer? Obviously memory management is something that I'll have to be conscious about (although with iOS 5 there seems to be something called ARC which should make my life easier), but what else? I'm not just talking about the C API (for example, in order to get the sin of a number, I call the sin() function), that's what Google is for. I'm talking about fundamental C/C++ idioms that the average C# developer is unaware of.

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• Apt-Daemon problem due to a broken sun-java6-jre package

  - by Marv

  I am having problems with installation with everything in the software center. Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:I wasn't able to locate a file for the sun-java6-jre package. This might mean you need to manually fix this package. Help?

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• Use unnamed object to invoke method or not?

  - by Chen OT

  If I have a class with only only public method. When I use this class, is it good to use unnamed object to invoke its method? normal: TaxFileParser tax_parser(tax_file_name); auto content = tax_parser.get_content(); or unnamed object version: auto content = TaxFileParser(tax_file_name).get_content(); Because I've told that we should avoid temporary as possible. If tax_parser object is used only once, can I call it a temporary and try to eliminate it? Any suggestion will be helpful.

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• Is there other ways to do insert/update/delete on a remote oracle database?

  - by gunbuster363

  I asked a question recently concerning the speed of execution of insert/update/delete using JDBC driver in a remote machine, but the problem cannot be solved easily. I would like to ask, is there any other way to execute the insert/update/delete to the oracle? The current situation is this: the DB is on a seperate machine than the java program used to update the DB. I looked up the internet and found people suggesting using pure sql or pl/sql to do the update, is that possible? And do we need to operate the sql or pl/sql in a local machine? Because I have no knowledge about pl/sql, so I am not sure if we can create some kind of script and call it on a remote machine. Let say the situation is like this: the input data is on machine A, and the original java program are also on machine A, but the oracle is on machine B. is there any other approach other than JDBC?

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• How do I get "ruby" to do what "ruby1.9.1" does?

  - by Daniel

  I want to start off by saying... I really don't need to be using 1.9.2. I understand that you don't ever, ever use Python 3.2, so if the common advice is that I should use 1.8, I'll do that. But don't tell me to do that because it's easier. Whatever version I should be using, though, the question is still relevant: What's a good way to make one command do another command? (I suppose I could write a c program to launch ruby1.9.1, call the executable ruby, and put it in my bin, but this seems like less than a good idea)

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• After low level formatting can microsoft track previously pirated windows installed on pc

  - by Neelabh

  am getting call from Microsoft and they are forcing me to purchase so many licensed software but my budget is not that much.. So they are asking for On-Site Audit (SAM Review)... So I did low level formatting of my All PC's and Installed Ubuntu. So can they track I installed pirated windows xp earlier on these system or I need to change hardware.. After formatting on what parameter Microsoft Track earlier piracy: 1) By any Harddisk ID 2) By any Motherboard ID 3) By any IP Address Please help me otherwise I have to borrow so much money for licensing fee. Thanks in Advance..

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• What are the ways to get included in Google Alerts mails

  - by stacker

  There is a news website / blog - I'll call it the Site from now on. The site mention a keyword in one of its articles. I add a Google Alerts for the keyword, but I do not get any alert for the word from The Site. Furthermore, searching the keyword in the news section don't getting any results from The Site. The Site has a sitemap, that indexed by Google every x minutes. And in the main search, searching for a news title bring the item on the top. What are the best ways to get included in Google Alerts mails?

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• What undergraduate course to choose for a mature programmer returning to study

  - by Dve

  I have been developing applications (mostly web-based) for almost 10 years now and have learnt pretty much everything I know through experience (and the internet!). I wouldn't call myself an advanced programmer, but I am quite proficient in several languages (C#, Javascript, Ruby, HTML/CSS etc) and spend a quite a bit of time working on personal projects and reading countless books & articles. I am looking to emigrate to Canada, hopefully Vancouver (im from the UK) and one way would be on a student visa, if I was going to be studying for a minimum of 2 years. Having never been to university or achieved anything higher than A-Levels I am quite tempted by this path. The thought of learning is more exciting to me now than it was 10 years ago! What would be people recommend as a good undergraduate course to take that would complement this career path? Would Math be beneficial, if so which area of Math? TL;DR What undergraduate course/area of study would complement 10 years of (mostly web-based) programming experience?

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• How to fix missing menus in non ubuntu maverick apps

  - by piedro

  Hi! There's a bug with the menue of filezilla: When opening filezilla there is no menue list. Very inconvenient because you can't open the "settings"-dialog. There are several workarounds that I tried - none of them really work. change theme while filezilla is running, menue reapperars. Once you close and reopen it the menue is gone again. add "export UBUNTU_MENUPROXY=0" " to .bash.rc or just call it before starting filezilla. Doesn't have any effect for me - menue still missing. tried "sudo apt-get remove appmenu-gtk" cause it's obviously to do with unity but the funny thing is even this method has bo effect at all! How can I fix this? How to do the troubleshooting? thx fior reading, p.

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• Dependency Management tool for REST endpoints

  - by ShaggyInjun

  I work in a Rest Oriented envrionment. The number of endpoints is quite large and span multiple applications. The dependencies between the endpoints are large in number as well and not very well planned. Applications have cyclic dependencies amongst each other. Unfortunately, there is no central location where all the endpoints are documented and declare dependencies ( the endpoints that they inturn call ). Is there a tool that will help in such dependency management. I tried searching for a tool online, but not know what such a thing would be called, I am unable to find anything. P.S. Google only helps those who know what they need help with. :(

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• Desktop Fun: Feathered Friends Wallpaper Collection

  - by Asian Angel

  Birds can serve as wonderful sources of inspiration with their varied colors, song, and feats of flight. Today we have a beautiful flock of birds that you can add to your desktop with our Feathered Friends Wallpaper collection 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 Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar Reader for Android Updates; Now with Feed Widgets and More

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• When should code favour optimization over readability and ease-of-use?

  - by jmlane

  I am in the process of designing a small library, where one of my design goals is that the API should be as close to the domain language as possible. While working on the design, I've noticed that there are some cases in the code where a more intuitive, readable attribute/method call requires some functionally unnecessary encapsulation. Since the final product will not necessarily require high performance, I am unconcerned about making the decision to favour ease-of-use in my current project over the most efficient implementation of the code in question. I know not to assume readability and ease-of-use are paramount in all expected use-cases, such as when performance is required. I would like to know if there are more general reasons that argue for a design preferring more efficient implementations—even if only marginally so?

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• Get system info from C program?

  - by Hamid

  I'm writing a little program in C that I want to use to output some system stats to my HD44780 16x2 character display. The system I'll be working with is a Debian ARM system and, although irrelevant, the display is on the GPIO header.(The system is a Raspberry Pi). As an initial (somewhat unambitious) attempt, I'd like to start with something simple like RAM and CPU usage (I'm new to C). I understand that if I make external command calls I need to fork() and execve() (or some equiv that will let me return the results), what I would like to know is how I go about getting the information I want in a nice clean format that I can use. Surely I will not have to call (for e.g); free -h And then use awk or similar to chop out the piece I want? There must be a cleaner way? The question should be seen as more of a generic, what is best practice for getting info about the system in C (the RAM/CPU usage are just an initial example).

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• "Fatal Error" message during boot process

  - by Denja

  I'm running Ubuntu 10.10 with ATI proprietary FGLRX graphic drivers When I boot, I can see this very quick message appearing; I don't have time to read it: **Fatal Error ..................................**(&@something i cant read) I searched through the log file in /var/log/ in order to find what is wrong and I did find something in the /var/log/Xorg.1.log: 21:31:08 [ 15.734] (--) using VT number 1 [ 204.647] Fatal server error: [ 204.647] xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call [ 204.647] [ 204.647] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 204.647] Please also check the log file at "/var/log/Xorg.1.log" for additional information. [ 204.647] But this is already Xorg.1.log. And there is a Xorg.0.log also & Xorg.0.log.old but it doesnt have any error in it. My system seems to work properly and it seems its not affected by this But how do I correct this message? Any suggestions?

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• jQuery .Flv Player

  - by H(at)Ni

  I've recently used a cool .Flv player to play video files that are uploaded by site admin and thought it's good to share. Download from: http://flowplayer.org/ Using this control is very simple, just follow those steps : 1. Create an anchor with href equals to the video url  <a href="Video.flv" id="MyPlayer" ></a>   2. Add path to the player's javascript file <script type="text/javascript" src="flowplayer-3.2.4.min.js"></script> 3. Simple call to a function named flowplayer with the anchor id, and path of the player's swf file     <script type="text/javascript">       $(document).ready(function () {       flowplayer("MyPlayer", "flowplayer-3.2.5.swf");       });     </script>

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• Jquery modal plugin

  - by trante

  In my web application i have one page call it mypage.html When user clicks some link in mypage a modal window will be opened and he will see some html page. (I do this by Colorbox or Twitter Bootstrap now) But when user clicked a button in modal window, an Ajax request will be sent to my server. If request is successfull he will see some new modal window, else user will see another modal window. After all steps user will close modal window and tasks will be finished. Which jquery modal window plugin is suitable for this type of usage?

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• Best practices for Persona development

  - by user12277104

  Over the years, I have created a lot of Personas, I've co-authored a new method for creating them, and I've given talks about best practices for creating your own, so when I saw a call for participation in the OpenPersonas project, I was intrigued. While Jeremy and Steve were calling for persona content, that wasn't something I could contribute -- most of the personas I've created have been proprietary and specific to particular domains of my employers. However, I felt like there were a few things I could contribute: a process, a list of interview questions, and what information good personas should contain. The first item, my process for creating data-driven personas, I've posted as a list of best practices. My next post will be the list of 15 interview questions I use to guide the conversations with people whose data will become the personas. The last thing I'll share is a list of items that need to be part of any good persona artifact -- and if I have time, I'll mock them up in a template or two. 

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• Autostarting a VirtualBox VM headless in Windows

  - by vdiozguy

  Do you have a VM that you want to start when your Windows box boots? Easy... Add a .bat file  to your Startup programs atC:\Users\MYUSERNAME\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup Containing the following call:"C:\Program Files\HSTART\hstart64.exe" /NOCONSOLE /SILENT "C:\Program Files\Oracle\VirtualBox\vboxheadless.exe --startvm MYVM" If that VM has Secure Global Desktop and it has a published app that points to your PC, well... ;)

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• Fiddler - A useful free tool for checking Web Services (and web site) traffic

  - by TATWORTH

  Recently I had reason to be very glad that I had Fiddler. I was able to record some web service traffic and identify a problem as Fiddler can record both the call to a web service and response from the web service. By seeing the actual data traffic I was able to resolve a problem found in testing in less time than it has taken me to write this blog entry! This tool is also useful for studying general web site traffic. Fiddler is available from http://www.fiddler2.com/fiddler2/ There are training videos available on the above site.

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• Using static in PHP

  - by nischayn22

  I have a few functions in PHP that read data from functions in a class readUsername(int userId){ $reader = getReader(); return $reader->getname(userId); } readUserAddress(){ $reader = getReader(); return $reader->getaddress(userId); } All these make a call to getReader() { require_once("Reader.php"); static $reader = new Reader(); return $reader; } An overview of Reader class Reader{ getname(int id) { //if in-memory cache exists for this id return that //else get from db and cache it } getaddress(int id) { $this->getname(int id); //get address from name here } /*Other stuff*/ } Why is class Reader needed The Reader class does some in-memory caching of user details. So, I need only one object of class Reader and it will cache the user details instead of making multiple db calls. I am using static so that it the object gets created only once. Is this the right approach or should I do something else?

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• Class design for calling "the same method" on different classes from one place

  - by betatester07

  Let me introduce my situation: I have Java EE application and in one package, I want to have classes which will act primarily as cache for some data from database, for example: class that will hold all articles for our website class that will hold all categories etc. Every class should have some update() method, which will update data for that class from database and also some other methods for data manipulation specific for that data type. Now, I would like to call update() method for all class instances (there will be exactly one class instance for every class) from one place. What is the best design?

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• Should I go back to the same company ?

  - by vinoth

  Hi , I quit the company I was working for(lets call it XYZ) and joined another company . When I quit the company I had very little Software development experience . I thought the rest of the world is a better place . So I complained about the word quality and all that while i quit . One year has taught me a lot of things and I feel XYZ is a much better place (in terms of freedom and decision making in work) . Is it ok to go back ? I am thinking a lot whether to go or not because I quit complaining the nature of work and now I am going back for the same thing . Also I am kind of not very sure to go to other places because , the work and quality are not predictable (I am might become disappointed again ) . Have any of guys been in the same situation before ?

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• What is the formal definition of a meta package?

  - by kojiro

  There are several examples of packaging where an application package is built, named, described, even licensed, but contains only setup code and dependencies -- it has no first-class runtime software of its own. I would call this "meta-packaging". This seems to be particularly popular in the open-source world, including examples like kde-meta (Gentoo Portage), Plone, and I'm sure lots of others. I can see how it's a useful practice, but despite it existing as a practice, I couldn't find a formal definition of either "meta-packaging" or "meta-egg" (Python) in searching the web. Is that not the correct term? If it is, is it such common-sense that it needs no formal definition? If not, what is the correct way to put it?

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