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  • What Design Pattern is separating transform converters

    - by RevMoon
    For converting a Java object model into XML I am using the following design: For different types of objects (e.g. primitive types, collections, null, etc.) I define each its own converter, which acts appropriate with respect to the given type. This way it can easily extended without adding code to a huge if-else-then construct. The converters are chosen by a method which tests whether the object is convertable at all and by using a priority ordering. The priority ordering is important so let's say a List is not converted by the POJO converter, even though it is convertable as such it would be more appropriate to use the collection converter. What design pattern is that? I can only think of a similarity to the command pattern.

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  • Is KoboldTouch a good way to learn?

    - by JamerTheProgrammer
    Im thinking of buying a Cocos2D tutorial book called:Learn Cocos2d Game Development With Ios 5 I would buy it but it mentions something about KoboldTouch? Is this some sort of really simple way of coding a game? I wanna do it the best way possible to learn. What would be the best way? I love coding so I dont really want something to simplify the process unless its the best method. Any ideas? Thanks!

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  • Is programming or computer science in general, all about algorithms?

    - by wakandan
    As a grad student, I find it more and more common for prestigious companies (like Google, Facebook, Microsoft,...) to put algorithm questions in their test and interviews. A few startups I applied to also asked about algorithms. I wonder if algorithms fluency is the most important thing for software developer in those companies? If the answer being yes, what are the best method or resources for one to learn & practice about algorithms effectively? I can't seem to get interested in solving seemingly too complicated problems found in most textbook or websites. Though easily understand basic algorithms (like quicksort, bubblesort,...), I find it immensely difficult to remember and reuse them later. Thanks. P/S: If you ask me what I like, it's building good softwares to solve users' problems innovatively. I suppose that does not necessarily mean the software has to be very complicated.

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  • Size of an image imported with FreeImage

    - by KaiserJohaan
    I'm having abit of a brainfart and I can't quite grasp what I'm doing wrong. It's quite simple, I am importing an image with FreeImage (http://freeimage.sourceforge.net/) which has a method FreeImage_GetBits that returns a pointer to the first byte of the image data. I then try to load all the data into memory using (bitsperpixel / 8) * pixelsWidth ' pixelHeight, like this: uint32_t bitsPerPixel = FreeImage_GetBPP(bitmap); // resolves to 24 uint32_t widthInPixels = FreeImage_GetWidth(bitmap); // resolves to 1024 uint32_t heightInPixels = FreeImage_GetHeight(bitmap); // resolves to 1024 // container is a std::vector<uint8_t> pkgMaterial.mTextureData.insert(pkgMaterial.mTextureData.begin(), FreeImage_GetBits(bitmap), FreeImage_GetBits(bitmap) + ((bitsPerPixel/8) * widthInPixels * heightInPixels)); I have a jpg which is 31 kilobytes in size on disc. Yet when I load it using the above formula, I see the vector is then filled with 3145728 bytes, which is approx 3145 kilobytes. What am I doing wrong?

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  • What technology(s)would be suitable for the front end part of a Java web game?

    - by James.Elsey
    As asked in a previous question, I'm looking to create a small MMO that will be deployed onto GAE. I'm confused about what technologies I could use for the user interface, I've considered the following JSP Pages - I've got experience with JSP/JSTL and I would find this easy to work with, it would require the user having to "submit" the page each time they perform an action so may become a little clumsey for players. Applet - I could create an applet that sits on the front end and communicates to the back end game engine, however I'm not sure how good this method would be and have not used applets since university.. What other options do I have? I don't have any experience in Flash/Flex so there would be a big learning curve there. Are there any other Java based options I may be able to use? My game will be text based, I may use some images, but I'm not intending to have any animations/graphics etc Thanks

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  • Player position triggering teleports

    - by jSherz
    I'm developing a Minecraft plugin (bukkit) in which a server admin can create 'portals' - a small region that will teleport any players who enter it. I have the teleportation sorted and I know how I could define areas that the player's position could be tested against. This would involve an ArrayList containing the zones and then hooking the PlayerMoveEvent so that the ArrayList is searched each time for a matching portal region. Although this method would work, I doubt that it would be very efficient when 100+ players are all moving around at the same time. Is there a better way of checking a player position against a set of 'zones' / regions?

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  • How to update all the installed software in Ubuntu without using any PPA?

    - by Suchith JN
    I've got many softwares installed. But when the new version is released I'm not getting notified from the application that an update is available. And I found that in most of Ubuntu applications the Update option is not available. I should wait for the next release for an updated version of the software. I've been updating Mozilla using the packages available from their PPA. In ubuntu is there any way to update the softwares without using any PPAs? Please don't recommend Build from source method since I don't like to do all those weird stuff like configuring the things manually etc.

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  • Log of data transfer and copied from Ubuntu

    - by Gaurav_Java
    Yesterday my friend ask me for some files i told him that take it from my system i don't see . what extra files or data he take from my system . I was thinking is here any application or method which shows what data is copied to which USB (if name available then shows name or otherwise device id ). and what data is beign copied to ubuntu machine . It is some like history of USB and System data . i think this feature is in KDE this will really useful in may ways. it provides real time and monitoring utility to monitor USB mass storage devices activities on any machine .

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  • How to access functions in extended classes efficiently?

    - by nischayn22
    In PHP I have classes as below class Animal { //some vars public function printname(){ echo $this->name; } } class AnimalMySql extends Animal { static public function getTableFields(){ return array(); } } class AnimalPostgreSql extends Animal { static public function getTableFields(){ return array(); } } Now I have an object $lion = new Animal(); and I want to do if($store == mysql) //getTableFields from class AnimalMySql else //getTableFields form class AnimalPostgreSql I am new to OOP and not sure what is the best way to call the method from the specific class P.S. Please leave a note with the answer to explain the efficiency of the approach

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  • How to draw a texture to a MS Terrain object - Farseer

    - by Brad
    I'm using Farseer to make a game in XNA and I can't seem to figure this out. I've decided to use MSTerrain for making my game's terrain because I wanted destructible terrain and MSTerrain seemed like the best bet. Unfortunately, I'm stumped on how to actually show the terrain. When I generate the terrain it's visible in debug view, but MSTerrain does not have a Draw method, so I'm wondering how it is supposed to be drawn to the screen? Is it worth pursuing? I'm starting to think that MSTerrain is more trouble than it's worth, is there another better way to do this with bodies? I appreciate any help you can give. Thanks.

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  • Where can I get a definition of how the code is laid out in VB.NET 2010?

    - by ByteWorker
    I am just starting out learning Visual Basic 2010. I have books and videos. The books all seem to be written for people who have some programming experience, even the books that say they are for beginners. The videos were great until they started talking about variables. I got the basics of them but they started into complicated variables and I don’t see the need for them right away. Where can I go to see code for fairly intricate applications written out, with an over lay of definitions of which part of the code is a method as opposed to a class and so on? Also, I am working at a company that does not use SQL. So I need to use Access 2007 for all of my tables. Is there much of a difference to the coding?

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  • OpenGL: Drawing to a texture

    - by Danran
    Well im just a bit stuck wondering how to draw an item to a texture. Specifically, i'm using; glDrawArrays(GL_LINE_STRIP, indices[0], indices.size()); Because what i'm drawing via the above function updates every-frame, i'm just totally not sure how to go about drawing what i have to a texture. Any help is greatly appreciated! Edit: Well unfortunately my graphics card doesn't support FrameBuffer Objects :/. So i've been trying to get the copy contents from backbuffer method working. Here's what i currently have; http://pastebin.com/dJpPt6Pd And sadly all i get is a white square. Its probably something stupid that i'm doing wrong. Just unsure what it could be?

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  • best approach to learning for an undergrad operating systems course?

    - by rrazd
    what is the best approach to learning for an undergrad operating systems course in order to understand the concepts and get a good grade in the exam? I know that some courses can be mastered through diligently reading the textbook or attending lectures while for others the concepts can only be understood by doing hands on projects. Is there a general studying approach that should be adopted for this type of a course? I know this may be subjective but I am looking for personal experiences/study methods by those who have taken similar courses to see if there is one particular method that worked well for the majority.

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  • How do I create stand alone packages from ubuntu repository

    - by tachyons
    Is it possible to create a stand alone deb packages by merging dependancies without manual repacking.?? I've looked at this question but it doesn't really answer what I'm trying to achieve above. if possible how to do it? update 1 No tools available yet(?) So what about creating new deb package containing all packages which will copy dependencies to the cache and executing main package. Is it possible? update 2 Above method appears to be impossible because dpkg cant handle more than one operation at a time. Some scripts may can do it update 3 this tool is very helpful but it currently wont support oneric and above still waiting for more generic tool Thanks in advance

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  • Are session aware Models a bad thing?

    - by kevtufc
    I'm thinking specifically in Rails here, but I suspect this is a wider question. In a Rails web application I'm using data from the session in models in order that the models know who is logged in. I use this in a method which filters out some data from the database depending on a very simple permissions system. The thing is: using sessions in models in Rails requires a bit of a workaround. It works, but I've a feeling that it's something that I shouldn't be doing and I'm worried there's a big gotcha I'm missing. I suppose the Right Thing To Do would be to return all the data and filter out the not-wanted bits in the controller before passing that to the view, but doing it in the model seems to avoid quite a bit of code duplication and so feels "cleaner." Can anyone tell me why or shouldn't do this? Or that it's not a problem?

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  • Recommended Linux distro to boot into RAM (from USB flash drive)?

    - by user91583
    I don't mind if I use USB flash drive or CD-ROM, but I would prefer USB flash drive. I had a squizz at http://en.wikipedia.org/wiki/List_of_Linux_distributions_that_run_from_RAM On my own computer, I would be able to use any of the distros in the list. The largest "RAM required" in the list is 4GB. I would like to be able to use it on any computer, so I suppose 1GB or less would be better. I tried to follow the method described on Distro that I can load into RAM? but the distro listed there, from Israel Remix Team, doesn't seem to be available. Before I start trial-and-error on different distros, does anyone have any recommendations?

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  • Is there a way to setup Clicktale tag in Google Tag Manager?

    - by Cubius
    Since GTM doesn't support document.write() method the standard clicktale code doesn't work. Is there a workaround for this? ClickTale employee has sent me these instructions: Replace the document.write JS line above with the following: document.body.appendChild(externalScript); Example: <!-- ClickTale Bottom part --> <script type='text/javascript'> var externalScript = document.createElement('script'); var scrSrc = document.location.protocol=='https:'? 'https://clicktalecdn.sslcs.cdngc.net/': 'http://cdn.clicktale.net/'; scrSrc += 'www11/ptc/xxx-xxx-xxx-xxx.js'; externalScript.src = scrSrc; externalScript.type = 'text/javascript'; document.body.appendChild(externalScript); </script> <!-- ClickTale end of Bottom part --> I am not sure what to do with this. Has someone tried something like this?

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  • Android Java: Way to effectively pause system time while debugging?

    - by TheMaster42
    In my project, I call nanoTime and use that to get a deltaTime which I pass to my entities and animations. However, while debugging (for example, stepping through my code), the system time on my phone is happily chugging along, so it's impossible to look at, say, two sequential frames of data in the debugger (since by the time I'm done looking at the first frame, the system time has continued to move ahead by seconds or even minutes). Is there a programming practice or method to pause the system clock (or a way for my code to intercept and fake my deltaTime) whenever I pause execution from the debugger? Additional Information: I'm using Eclipse Classic with the ADT plugin and a Samsung SII, coding in Java. My code invoking nanoTime: http://pastebin.com/0ZciyBtN I do all display via a Canvas object (2D sprites and animations).

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  • Install Skype on Ubuntu 12.04 LTS 64-bit

    - by Samir R. Bhogayta
    For 32Bit Terminal Commands: wget http://download.skype.com/linux/skype-ubuntu-lucid_4.2.0.11-1_i386.debsudo dpkg -i skype-ubuntu-lucid_4.2.0.11-1_i386.debsudo apt-get -f install;rm skype-ubuntu-lucid_4.2.0.11-1_i386.deb For 64Bit Terminal Commands: sudo dpkg --add-architecture i386sudo apt-get install ia32-libssudo apt-get updatewget http://download.skype.com/linux/skype-ubuntu-lucid_4.2.0.11-1_i386.debsudo dpkg -i skype-ubuntu-lucid_4.2.0.11-1_i386.debsudo apt-get -f install;rm skype-ubuntu-lucid_4.2.0.11-1_i386.debAfter all of this run in terminal sudo apt-get install sni-qt:i386; This will restore the skype contact window That's all, work done in maximum 5 minutes. I use Ubuntu on 64bit and this method to install Skype worked always perfectly.

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  • How do I repeatedly move an image by 1 pixel?

    - by Will
    I have a method that is moving a UIImageView called shootImg across the screen: -(IBAction)shoot{ if (appDelegate.shootInt > 0) { if (direction == 1) { shootImg.center = CGPointMake(shootImg.center.x+1, shootImg.center.y); appDelegate.shootInt = appDelegate.shootInt - 1; shootLabel.text = [NSString stringWithFormat:@"%d", appDelegate.shootInt]; } This does seem to work. But it only moves shootImage 1 pixel. What I want to do is make it repeatedly move 1 pixel. I tried a while loop but that didn't seem to work. I'm not using cocos2d or anything like that and if you need to see more code just ask. Thanks :)

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  • I need advice on creating 3D walk cycles in XNA

    - by Zetar
    I want to purchase a number of 3D models from TurboSquid and animate them in an XNA game. I wrote a lot of games from 1985-1999 and have recently become involved with XNA. Now I would like to port one of my old games to the XBOX. I do have a background in 3D animation; but that was years ago. What is the current method for animating a walk cycle with a 3D model and using it inside XNA? Is there a book, software or a tutorial that you can recommend? Thanks in advance and sorry for such a broad and currently naive question.

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  • Need Information On Importing Data Into The Oracle Product Hub?

    - by LuciaC
    One of the key challenges of implementing a Master Data Management solution is importing data into the system. Oracle Product Hub offers numerous ways of importing the setup data and the actual product data.  Review all available methods to import data in the White Paper Doc ID 1504980.1 which provides details and examples of each method, discusses special cases, and provides some troubleshooting tips.The methods reviewed include:     FNDLOAD     iSetup     Interfaces and Public APIs     Import from Excel     Web Application Desktop Integrator     Webservices

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  • Application window as polygon texture?

    - by nekome
    Is there a way, or method, to have some application rendered as texture in 3D scene on some polygon, and also have full interactivity with it? I'm talking about Windows platform, and maybe OpenGL but I guess it doesn't matter is it OGL or DX. For example: I run Calculator using WINAPI functions (preferably hidden, not showing on desktop) and I want to render it inside 3D scene on some polygon but still be able to type or click buttons and have it respond. My idea to realize this is to have WINAPI take screenshot (or render it to memory if possible) of that Calculator and pass it to OpenGL as texture for each frame (I'm experimenting with SDL through pygame) and for mouse interactivity to use coordination translation and calculate where on application window it would act, and then use WINAPI functions such as SetCursorPos to set cursor ant others to simulate click or something else. I haven't found any tutorials with topic similar to this one. Am I on a right track? Is there better way to do this if possible at all?

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  • How to separate and maintain customer specific code

    - by WYSIWYG
    I am implementing customer specific code and currently following simple approach like if (cusomterId == 23) do it. I want to separate out all the customer related code in separate place. But I have following problems. In code is in 1. Stored procs 2. Plain old classes. 3. Controllers 4. Views I came up with two solutions. First is to create table CustomerFunctionlity with columns CustomerId, FunctionalityName, method/Proc, inputs/outputs With this table I can simply check if exists, execute given function. Another way is creating a factory which returns customer related object for an interface. I am writting small end to end customer specific functionalities. How can I write maintenable code. Thanks

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  • which one is the safe site to buy cheap wildstar gold?

    - by user50866
    Wsoplat.com is a professional online shop which provide the cheapest wildstar gold, the fastest delivery, the best 24/7 online service for the players. Secure Guarantee cheap wildstar gold offered by wsoplat.com are reliable sourced, safe and honored. Lowest Price We are constantly trying to offer the lowest prices on Wildstar Gold for our loyal customers. Covenient shopping procedure & secure delivery method We are very experienced in this business. Every order is processed both smoothly and efficiently. Friendly Service and Instant Delivery Wsoplat 's delivery department work 24/7/365, We have professional and friendly customer service operators, they can help you buy wildstar gold, accounts, items and more. 5% discount code to buy WildStar gold in wsoplat - WSOPLAT http://www.wsoplat.com/

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