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• Advice on whether to use scripting, run time compile or something else

  - by Gaz83

  I work in the prodution area at my works and I design and create the software to run our automated test equipment. Everytime I get involved with a new machine I end up with a different and (hopefully) better design. Anyway I have come to the point where I feel I need to start standardization all the machines with the same program. I see a problem when it comes to applying updates as at the moment the test procedures are hard coded into the program at each station. I neeed to be able to update the core program without affecting the testing section. The way I see it that this will mean splitting the program into 2 sections. Main UI - This is the core that talks to everything on the machine such as cameras, sensors, printer etc and is a standalone application. Test Procedure - This is the steps that is executeted everytime the machine runs through a test. The main UI will load the test procedure and execute when ever a test is required. My question is what is the best approach to this in terms of having an application load a file and execute the code with in? Take into account that the code in the test procedure will need access to public methods on the UI/core system to communicate to sensors etc. I have heard about MS Roslyn and had a quick look, would this solve my issue?

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• How to auto-update a website mirror with exceptions to certain pages?

  - by tomatosalad

  I'm currently mirroring a website on my server. The site itself is rarely updated, but it is updated enough that info can become outdated quickly. I mirrored it first with wget, and this worked fine, but I made some changes: The original index.html used frames, but the site also provides a main.html which is essentially index.html but without frames. I deleted index.html and renamed main.html. I did not want to mirror the webchat, blog or forum, so I deleted those files and directories and made directories "blogs" "forum" and "chat" and placed a php redirect in each of those, redirecting visitors to the orignal site. I'd like to auto-update the mirror (maybe once every 24-72 hours), but preserve the changes I made. Is this possible? How would I go about doing it? I am completely clueless as to how. Thanks for any and all help! :)

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• Proper way to do texture mapping in modern OpenGL?

  - by RubyKing

  I'm trying to do texture mapping using OpenGL 3.3 and GLSL 150. The problem is the texture shows but has this weird flicker I can show a video here. My texcords are in a vertex array. I have my fragment color set to the texture values and texel values. I have my vertex shader sending the texture cords to texture cordinates to be used in the fragment shader. I have my ins and outs setup and I still don't know what I'm missing that could be causing that flicker. Here is my code: Fragment shader #version 150 uniform sampler2D texture; in vec2 texture_coord; varying vec3 texture_coordinate; void main(void) { gl_FragColor = texture(texture, texture_coord); } Vertex shader #version 150 in vec4 position; out vec2 texture_coordinate; out vec2 texture_coord; uniform vec3 translations; void main() { texture_coord = (texture_coordinate); gl_Position = vec4(position.xyz + translations.xyz, 1.0); } Last bit Here is my vertex array with texture coordinates: GLfloat vVerts[] = { 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.5f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f}; //tex x and y If you need to see all the code, here is a link to every file. Thank you for your help.

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• Sharing RAM resources between 2 or more computers

  - by davee44

  I know there was a somewhat similar question before: How to share CPU or RAM? But, let me just specify it a little more... When Microsoft Windows requires more RAM capacity than available it uses a swap-file to temporarily store the data there, this is actually something like a hard-drive-based RAM. This technology is used for many years. Theoretically, it shouldn't be too hard to implement a similar technology that uses the RAM of different computer(s) in the network for temporary data storage. This just requires a software that runs on computers in the network that accepts and returns data from/to the main computer and keep that data in the RAM; plus the operation system of the main computer must have the ability to use computers in the network instead of (or in addition to) the swap-file. I wonder, are there any implementations of this idea? This would allow users to build RAM clusters using all of their home or office computers, that will boost the performance of a single computer for some development/gaming/video tasks, etc.

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• creating video from set of images on windows with java language [on hold]

  - by Atif

  I am stuck in making video from set of images, i am using ffmpeg tool on windows platform with java language, for single image it is converting into mp4 but for the set of images it gets failed, i have converted single % to double % with doube quotes but unsuccessful ffmpeg -r 1/5 -i "D:\novoworkspace\MGram\src\biz\novosol\mgram\main\img%%04d.jpg" -c:v libx264 -r 30 -pix_fmt yuv420p D:\novoworkspace\MGram\src\biz\novosol\mgram\main\video.mp4 Above is the exact command i tried from the command line as well from the java language with getRuntime() method. Environment is widows please suggest is it possibe under windows or I have to use some alternative Thanks Atif

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• JavaFX: Use a Screen with your Scene!

  - by user12610255

  Here's a handy tip for sizing your application. You can use the javafx.stage.Screen class to obtain the width and height of the user's screen, and then use those same dimensions when sizing your scene. The following code modifies default "Hello World" application that appears when you create a new JavaFX project in NetBeans. package screendemo; import javafx.application.Application; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.stage.Stage; import javafx.stage.Screen; import javafx.geometry.Rectangle2D; public class ScreenDemo extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("Hello World"); Group root = new Group(); Rectangle2D screenBounds = Screen.getPrimary().getVisualBounds(); Scene scene = new Scene(root, screenBounds.getWidth(), screenBounds.getHeight()); Button btn = new Button(); btn.setLayoutX(100); btn.setLayoutY(80); btn.setText("Hello World"); btn.setOnAction(new EventHandler() { public void handle(ActionEvent event) { System.out.println("Hello World"); } }); root.getChildren().add(btn); primaryStage.setScene(scene); primaryStage.show(); } } Running this program will set the Stage boundaries to visible bounds of the main screen. -- Scott Hommel

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• Hide a 2nd Monitor from a Programs Print Screen

  - by jasondavis

  I run 2 monitors on a PC that also runs a program for the Freelancing site Elance.com. The program they provide, takes screenshots and uploads them to my account for a client to see at different intervals. My goal is to make the screenshot that the program takes and uploads, to somehow only take a shot of my "Main" or "Defualt" monitor and ignore my 2nd monitor. The main reason is my 2nd monitor generally has private data that I do not displayed to the world on a website. Does anyone know if there is any kind of program or trick I can use that will make it appear that I have 1 monitor when a Screenshot is taken? I am not sure how the program does it and how that works as I am a web developer and not a C++ or any kind of low level programmer. If the Elance program simply runs the same function that is called when a PrintScreen key is pressed on a keyboard, then I am thinking it might be possible to maybe trick that into only the default desktop? Any ideas or help would be appreciated, thank you

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• Win7 and Ubuntu refuse to coexist

  - by Jeremy

  I'll make this quick: I have an HP laptop with win7, I installed Ubuntu on a separate partition, and when I tried to boot win7 from grub I got the loading screen and no progress-ever. I did a /fixmbr with the windows recovery cd and got back windows, but wiped out grub and my access to Ubuntu. I reinstalled grub from the Ubuntu live usb ( I know I did this correctly) and now windows won't boot, again. I'm a linux noob at a loss. Your wisdom is greatly appreciated! Update in response to Scott Severance: your instructions say to determine the main partition on my computer. I'm not sure what this means... my windows partition is at sda2, my boot partition is at sda1, and my linux root partition is at sda7... Which is the "main" partition? UPDATE: I determined that you were probably referring to the linux root(/) partition, because this was the only partition for which I could follow your instructions without errors. Now, Windows is booting fine (thanks to /fixmbr), but even after the grub instructions there is no grub. It boots straight into windows.

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• Complex, yet simple crafting system model

  - by KatShot

  I'm working on some arcade shooter/slasher, and the main logline is "Kick'em with everything you want". There's not so many enemies in GDD, main focus is on tons of weapons and gadgets to cause mayhem. To get weapon, you need to craft it, and now crafting system looks simple, like: 1) You got three slots for weapon parts (like A, B, C) 2) You collect misc weapon parts, and when you got atleast one for every slot, you can craft a weapon (for example, if you got A1, B1, B2, B3 and C1, you can craft such models - A1B1C1, A1B2C1, A1B3C1) As for me, this crafting system is too simple, because weapon parts will just fall from the top of screen, often enough. That's why I'm thinking about adding some more crafting system levels, like resources (collect 10 scrap pieces to make part A1 or C3), etc. My question is: How can i add some more complex, still simple, transparent levels in crafting system? upd. For example, in Minecraft or Terraria, first 5-10 crafting recipies quite transparent and simple IMHO. But then it turns into huge mess to understand, how to craft this or that (for example, fishing rod)

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• Program opens on disconnected and invisible monitor [closed]

  - by FiveO

  Possible Duplicate: Recover Windows Opening Off Screen? I'm working with a HP Elitebook 8460p with Windows 8 using always 2 Monitors connected. And some Programs I'm always opening on the second screen (which windows does automatically). But now the problem: When the screens aren't connected (when I'm at home), some programs still open on the second screen (which does not exist anymore) and it's just not possible to move them to the main (only!) screen! Does some one knows a solution for the problem - already bringing back the windows to the main screen would be enough. Thanks

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• postfix: deliver mail to specific emai addresses locally and send the rest to relayhost

  - by sme

  I want to achieve the following with postfix: Almost all outgoing emails shall be sent via a relayhost, configured in main.cf with relayhost = my.mailserver There's one specific email address ([email protected]) for which I want the email to be delivered locally. I set up a local account on the machine to match the email address and added "mydomain.com" to the mydestination property in main.cf. Then of course postfix tries to deliver every email to @mydomain.com locally and bounces them because the respective user doesn't exist. Question http://serverfault.com/questions/149453/hybrid-gmail-mx-postfix-for-local-accounts seems to be somewhat related (though more complicated).

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• Software Architecture: How to divide work to a network of computers?

  - by Morpork

  Imagine a scenario as follows: Lets say you have a central computer which generates a lot of data. This data must go through some processing, which unfortunately takes longer than to generate. In order for the processing to catch up with real time, we plug in more slave computers. Further, we must take into account the possibility of slaves dropping out of the network mid-job as well as additional slaves being added. The central computer should ensure that all jobs are finished to its satisfaction, and that jobs dropped by a slave are retasked to another. The main question is: What approach should I use to achieve this? But perhaps the following would help me arrive at an answer: Is there a name or design pattern to what I am trying to do? What domain of knowledge do I need to achieve the goal of getting these computers to talk to each other? (eg. will a database, which I have some knowledge of, be enough or will this involve sockets, which I have yet to have knowledge of?) Are there any examples of such a system? The main question is a bit general so it would be good to have a starting point/reference point. Note I am assuming constraints of c++ and windows so solutions pointing in that direction would be appreciated.

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• Shared pointers causing weird behaviour

  - by Setzer22

  I have the following code in SFML 2.1 Class ResourceManager: shared_ptr<Sprite> ResourceManager::getSprite(string name) { shared_ptr<Texture> texture(new Texture); if(!texture->loadFromFile(resPath+spritesPath+name)) throw new NotSuchFileException(); shared_ptr<Sprite> sprite(new Sprite(*texture)); return sprite; } Main method: (I'll omit most of the irrelevant code shared_ptr<Sprite> sprite = ResourceManager::getSprite("sprite.png"); ... while(renderWindow.isOpen()) renderWindow.draw(*sprite); Oddly enough this makes my sprite render completely white, but if I do this instead: shared_ptr<Sprite> ResourceManager::getSprite(string name) { Texture* texture = new Texture; // <------- From shared pointer to pointer if(!texture->loadFromFile(resPath+spritesPath+name)) throw new NotSuchFileException(); shared_ptr<Sprite> sprite(new Sprite(*texture)); return sprite; } It works perfectly. So what's happening here? I assumed the shared pointer would work just as a pointer. Could it be that it's getting deleted? My main method is keeping a reference to it so I don't really understand what's going on here :S EDIT: I'm perfectly aware deleting the sprite won't delete the texture and this is generating a memory leak I'd have to handle, that's why I'm trying to use smart pointers on the first place...

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• How can i simulate the production servers in my home for linux VMs [closed]

  - by user31

  I am thinking of making the small simulation of how the big companies run their system in my home environment to get the feeling. I have the server with 8GB ram , quad core processor. I am thinking of following setup if thats [possible because i have not worked with biger companies , so i want to know how can i do that I am thinking of creating 5 virtual machines VM1 will be database server and will have all databases like MySQL , postgreSQL , sqlite , mongodb and Oracle VM2 will be the web server and will have Apache and Tomcat installed VM3 will be the Filse server where i will have all the web sites file VM4 , i am thinking of as main box where i can install ptyon php java j2ee sites but not sure VM5 will have the server 22008 for c# .net applications my main idea is to be able to host the sites in php, python , java j2ee with spring Is my setup ok or i am missing few things. Please guide me with correct setup so that i can learn stuff

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• Where does Skype save its chat history & contacts?

  - by user4796

  I'm aware that there is a main.db file that is stored in a Windows directory. On XP: C:\Documents and Settings\<windows user>\Application Data\Skype\<username> But I just downloaded Skype onto my Android and noticed that all chats are sync'd. So to me, this suggests that the main.db file is not the only storage being used (because it is obviously not on my phone). Are contacts and chat history stored in my online Skype account? Does anyone know where I can find more information about this? I read this thread: Does skype automatically save chat history to the cloud? And how do you explain the sync'd chats?

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• C++ Parallel Asynchonous task

  - by Doodlemeat

  I am currently building a randomly generated terrain game where terrain is created automatically around the player. I am experiencing lag when the generated process is active, as I am running quite heavy tasks with post-processing and creating physics bodies. Then I came to mind using a parallel asynchronous task to do the post-processing for me. But I have no idea how I am going to do that. I have searched for C++ std::async but I believe that is not what I want. In the examples I found, a task returned something. I want the task to change objects in the main program. This is what I want: // Main program // Chunks that needs to be processed. // NOTE! These chunks are already generated, but need post-processing only! std::vector<Chunk*> unprocessedChunks; And then my task could look something like this, running like a loop constantly checking if there is chunks to process. // Asynced task if(unprocessedChunks.size() > 0) { processChunk(unprocessedChunks.pop()); } I know it's not far from easy as I wrote it, but it would be a huge help for me if you could push me at the right direction. In Java, I could type something like this: asynced_task = startAsyncTask(new PostProcessTask()); And that task would run until I do this: asynced_task.cancel();

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• Question about Byte-Pairing for data compression [closed]

  - by user1669533

  Question about Byte-Pairing for data compression. If byte pairing converts two byte values to a single byte value, splitting the file in half, then taking a gig file and recusing it 16 times shrinks it to 62,500,000. My question is, is byte-pairing really efficient? Is the creation of a 5,000,000 iteration loop, to be conservative, efficient? I would like some feed back on and some incisive opinions please. Best Regards.

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• how to recover data from my disk - I accidentally copied with dd an iso on it

  - by sijoune

  I wanted to create a bootable usb from an iso image and i accidentally put as the output of the dd, instead of my usb drive, one of my hard disks. The iso was 3,3 GB and my disk is 1TB! And it was almost full. Can i at least restore the data that has not been overwritten? Right now i can't even mount it. I get this error: Error mounting /dev/sdd1 at /media/main/UDF Volume: Command-line `mount -t "udf" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,iocharset=utf8,umask=0077" "/dev/sdd1" "/media/main/UDF Volume"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sdd1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Also since i know which filesystem my disk used if i reformat it to this filesystem is there any chance i can mount it and retrieve the rest of the files?

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• Installing CURL on Ubuntu Karmic

  - by Racertim

  Trying to get this up and running: https://github.com/cloudnull/massupload I have everything except CURL installed and when I attempt to, it fails with the following: Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: curl 0 upgraded, 1 newly installed, 0 to remove and 3 not upgraded. Need to get 196kB of archives. After this operation, 311kB of additional disk space will be used. WARNING: The following packages cannot be authenticated! curl Install these packages without verification [y/N]? y Err http://us.archive.ubuntu.com karmic/main curl 7.19.5-1ubuntu2 404 Not Found [IP: 91.189.91.13 80] Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/c/curl/curl_7.19.5-1ubuntu2_i386.deb 404 Not Found [IP: 91.189.91.13 80] Thank you!

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• Stop Metro on W8 from minimizing on dual screens

  - by Pestario

  I'm running Windows 8 with two screens, and have set it so that I have Metro on my secondary screen, because I thought that I could have that visible while I was working on other things on the main screen. The problem is, as soon as I click on something on the main screen, Metro goes away on my secondary screen. Is there any way to prevent this from happening?? I would like to be able to see f.ex the clock, notifications on mail/messaging etc. while I'm working on things.

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• Windows 7 treating my third monitor as an extension to my second rather than detecting it as a stand alone

  - by user331837

  I am trying to attach a third monitor to my PC, however I am coming across a rather strange issue. Windows screen resolution is still only showing that I have two monitors connected, but the second has been extended over both the second and third monitors. Basically, it shows as the main display being a normal size, and the secondary as being twice as long as normal. I have my main connected via a the display port, and the second and third are using two of the three mini HDMI ports my video card provides. How do I get windows to accept my third monitor the same as it does my second?

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• How to connect to two VPN connections at the same time in Mac?

  - by Sallar Kaboli

  Hello, I have a problem with my vpn connections, my ISP requires me to connect to a private vpn server of it's own in order to connect to internet, im connected to main network via WiFi, but i also want to connect to another VPN network of my choice (to bypass internet limitation in my country of course), i am able to do that in Windows, but its not working in Mac OS X Snow Leopard second vpn connecion type is PPTP / CHAP How can i do that? as u see in the pic, both vpn's are connected, first one is for main internet which is working properly , second one is also connected but its not affecting anything. its just connected. http://www.freezpic.com/pics/a5231c3e80501a3c25430f43c1ef5856.png

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• In Ubuntu Linux, how do I list packages installed from the “universe” repository?

  - by Nate

  On an Ubuntu 10.04 LTS server, I want to list installed packages and see what repository they come from. It’s easy to list installed packages, but it does not include the name of the repository (such as “main” or “universe”). And this information isn’t in /var/lib/dpkg/status, so dpkg-query doesn’t show it either. I want to get a list of “unsupported” software—that is, software that doesn’t come from the “main” repository, and for which Ubuntu does not guarantee security updates. Note: This is a server. It does not have X, GNOME or KDE installed.

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• Equalizing Agent and Master Nagios on state change alone

  - by punith

  We have a setup where there are distributed Nagios running on multiple sites and are equalizing their data to the main Nagios server. The problem is it sends back the data to main Nagios server no matter if there is a state change in host or service. Is it possible to configure the slave Nagios to check the service/Host every 5 sec but send back the data only if there is a state change. Currently it is implemented by Obsess Over Hosts/Service which always runs the command which will equalize. Nagios version is 3 I am no administrator but a developer so I don't know the exact jargon so please bare with me.

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• Game programming and quantity of timers

  - by andresjb

  I've made a simple 2D game engine using C# and DirectX and it's fully functional for the demo I made to test it. I have a Timer object that uses QueryPerformanceCounter and I don't know what's the better choice: use only one timer in the game loop to update everything in the game, or an independent timer in every object that needs one. My worry is that when I try to implement threads, what will happen with timers? What happens with the sync?

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