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• Shopping cart for service providers?

  - by uos??

  From my limited exposure, it seems to me that most shopping cart/eCommerce platforms are specifically for products-based retailers. On several occasions now, I've been asked about ecommerce solutions for service providers. That is, it's basically just a single product with payment but no shipping, and highly configurable "product". Any recommendations for a cost-efficient solution (high feature coverage) for such a web platform? Requirements: .NET No/suppressed product catalog A service customization selection form Payment (probably PayPal with accountless credit card processing) Guest purchases (no site account required) Email confirmation Customer service -facing control panel It's hard to search for such a product because I get "web service based ecommerce software" and so on clouding up the results.

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• What's New & Cool in NetBeans IDE 7.x

  - by Geertjan

  Loads of new features have been added to NetBeans IDE during the NetBeans IDE 7.x release cycle, i.e., 7.0 together with all the minor releases that have come after that, up to 7.4, which was released during the last few days. Hard to keep track of everything added over all those releases, so instead of making a "What's New in NetBeans IDE 7.4" slide deck (which would only cover the highlights of the NetBeans IDE 7.4 Release Notes), as we would normally do, we've instead produced "What's New in NetBeans IDE 7.x", which is around 50 slides presenting all the key features of the IDE, together with all the key newest features. Here it is: If you want to present the wonderful world that is the NetBeans ecosystem to your JUG or school or university or colleagues in your company, just download the above slide deck (either PDF or the PowerPoint sources) here: https://netbeans.org/community/teams/evangelism And happy NetBeans IDE 7.4 to everyone using NetBeans IDE everywhere in the world!

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• Why dosn't Ubunto like my HP Pavilion G7?

  - by user109379

  I installed Ubunto onto my HP Pavillion G7 1330dx without much problem, but it took 3 or more tries to get it to boot up after. Then , I started over and installed Mint, no problems installing or booting up. BUT, I decided I I liked Ubunto better so I wiped my hard drive and installed Ubunto ( this time the 32 bit) ,It runs great once i finally get it to boot, it takes 3 or more tries again. Whats the deal? I really like it but really don't know what I'm doing. I've been a Windows guy until a couple days ago.

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• Decrease mouse sensitivity below the standard limit.

  - by Bruce Connor

  I've got a USB mouse attached to my Ubuntu notebook. This mouse is (unfortunately) really sensitive, and so it sometimes gets hard to hit small icons with the mouse pointer. This is really a hardware issue, it's not a bug and it's not Ubuntu's/gnome's fault. Still, I would very much like to this issue through software (solving through hardware would imply buying a new mouse). Back in Windows, if I set the sensitivity as really low it was comfortable enough. In Ubuntu, even the lowest sensitivity and acceleration available (in the SystemPrerencesMouse menu) is still frustrating. How can I decrease it below the default minimum? I tried xset, but it seems xset only deals with acceleration and threshold, but not actual sensitivity.

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• rsync not working between NTFS/FAT and EXT

  - by wim

  I have music that I play in my car, from an FAT32 USB stick. The folder which I use to put songs on is stored on my EXT4 hard drive. I add/remove/retag songs regularly and occassionally want to rsync the changes to the USB stick. But for some unknown reason (maybe permissions?), rsync copies all the files every time rather than just changed ones. I am calling rsync like : rsync -vrlptgD source dest How can I make it work like I want it to (i.e. know when a file hasn't been changed and don't copy it)?

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• Could someone break this nasty habit of mine please?

  - by MimiEAM

  I recently graduated in cs and was mostly unsatisfied since I realized that I received only a basic theoretical approach in a wide range of subjects (which is what college is supposed to do but still...) . Anyway I took the habit of spending a lot of time looking for implementations of concepts and upon finding those I will used them as guides to writing my own implementation of those concepts just for fun. But now I feel like the only way I can fully understand a new concept is by trying to implement from scratch no matter how unoptimized the result may be. Anyway this behavior lead me to choose by default the hard way, that is time consuming instead of using a nicely written library until I hit my head again a huge wall and then try to find a library that works for my purpose.... Does anyone else do that and why? It seems so weird why would anyone (including me) do that ? Is it a bad practice ? and if so how can i stop doing that ?

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• How to find corrupted files?

  - by rafalcieslak

  Some files on my hard drive are corrupted (no worries, nothing system-related, just a junk of data files, mp3 etc.). I found that out when I tried to burn them all to a DVD, the burning application show a message that it cannot read the files as they are corrupted. [This is probably a drive issue, it had happened me once or twice already]. I don't care about recovering them, but I have to determine which ones are corrupted. I cannot check by manually opening them all, as there are thousands of them. Is there any tricky way to check all the files and list the ones that may cause problems when tried to open?

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• Conscience and unconscience from an AI/Robotics POV

  - by Tim Huffam

  Just pondering the workings of the human mind - from an AI/robotics point of view (either of which I know little about)..   If conscience is when you're thinking about it (processing it in realtime)... and unconscience is when you're not thinking about it (eg it's autonomous behaviour)..  would it be fair to say then, that:   - conscience is software   - unconscience is hardware   Considering that human learning is attributed to the number of neural connections made - and repetition is the key - the more the connections, the better one understands the subject - until it becomes a 'known'.   Therefore could this be likened to forming hard connections?  Eg maybe learning would progress from an MCU to FPGA's - therefore offloading realtime process to the hardware (FPGA or some such device)? t

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• Video player with good subtitle rendering

  - by Oxwivi

  Is there any way to improve the subtitle rendering capabilities of Totem? The subtitles positioning seems to be hard-coded in it and even though the style is user-customizable, it does not confirm to the formatting in subtitle data. In some scenes where writings appear, the subtitles are supposed to appear next to those along with what is being said at that moment. However, on those scenes the translations of text onscreen appears on the default subtitle area with nothing about the things being said. The correct rendering are according to the open-source Windows video player, Media Player Classic - Home Cinema. There are no Linux port as far as I'm aware. If VLC's subtitle support is the same as in Windows, it won't work for me, period. Please suggest anyway to improve subtitle rendering in Totem, other video players, or a way to port MPC-HC.

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• Configuration server problem after changing /tmp mountpoint: how to solve?

  - by Aron Rotteveel

  I created a new partition on my hard drive because my /tmp partition was too small. I changed the mountpoint in /etc/fstab and rebooted. Every time I reboot, I get the following error message at the login screen: There is a problem with the configuration server. (/usr/lib/libgconf2-4/gconf-sanity-check-2 exited with status 256) When I log in, /tmp is mounted correctly and everything seems to work fine. When I reboot, the error shows again. When I change the /tmp mountpoint back to the old partition, the error message disappears. What could be causing this and how can I solve this issue?

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• Can't disable giant cursors (from accessibility mode)

  - by jackweirdy

  I've just installed ubuntu 12.04 from a livecd. Out of curiosity, I enabled the accessibility options for people who are hard of sight. As you can guess this does the usual stuff of inverting colours, increasing text size and making the cursor larger. Having finished the installation I booted into the new system to find accessibility mode was still installed. From the lightdm login screen I disabled this which switched colours and text size back to default, however it's only the pointer cursor that has gone back to default. To put it another way, the "hand" icon that you get when hovering over a link, the cursor which appears when typing and pretty much every other cursor on the system are still large. I've looked on the Universal Access menu, but there's no option to disable large cursors. I've tried toggling accessibility on and off but to no avail.

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• JCP wrap up of JavaOne and some news links

  - by heathervc

  A New article has been published on JCP.org covering the happenings surrounding JavaOne earlier this month, JCP Wrap-Up: Platform Evolution and JCP Enthusiasm. The JCP sessions from JavaOne are also now available from the JavaOne conference catalog: JCP.Next: Reinvigorating Java Standards Session ID: BOF6272 101 Ways to Improve Java: Why Developer Participation Matters Session ID: BOF6283 Meet the JCP Executive Committee Candidates Session ID: BOF6307 And a few links from around the web related to the JCP and JavaOne are below. Let us know if we've missed anything! 101 Ways to Improve Java - Why Developer Participation Matters (DZone) JavaOne 2012: 101 Ways to Improve Java (Java Code Geeks) JCP Ready for the Hard Stuff: Revising the JSPA (Application Development Trends) Oracle Hails Community Involvement in Java (v3.co.uk) JavaOne 2012 Recap Trip Report: Oracle OpenWorld and JavaOne 2012

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• Tip #15: How To Debug Unit Tests During Maven Builds

  - by ByronNevins

  It must be really really hard to step through unit tests in a debugger during a maven build.  Right? Wrong! Here is how i do it: 1) Set up these environmental variables: MAVEN_OPTS=-Xmx1024m -Xms256m -XX:MaxPermSize=512mMAVEN_OPTS_DEBUG=-Xmx1024m -Xms256m -XX:MaxPermSize=512m  -Xdebug (no line break here!!)  -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=9999MAVEN_OPTS_REG=-Xmx1024m -Xms256m -XX:MaxPermSize=512m 2) create 2 scripts or aliases like so:  maveny.bat: set MAVEN_OPTS=%MAVEN_OPTS_DEBUG% mavenn.bat: set MAVEN_OPTS=%MAVEN_OPTS_REG%    To debug do this: run maveny.bat run mvn install attach your debugger to port 9999 (set breakpoints of course) When maven gets to the unit test phase it will hit your breakpoint and wait for you. When done debugging simply run mavenn.bat Notes If it takes a while to do the build then you don't really need to set the suspend=y flag. If you set the suspend=n flag then you can just leave it -- but only one maven build can run at a time because of the debug port conflict.

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• Computer refuses to boot either ubuntu disk I'm using

  - by xtraorange

  I'm attempting to set up an Amahi server, and thus have taken an older PC and wiped it clean using DBAN. I'm now in the process of installing Ubuntu, but for some reason the computer refuses to recognize either form of Ubuntu I throw at it, even though it recognizes the Windows XP CD fine. Things it can't be: Boot order - I've tripple checked A bad DVD - I've booted the live CD off of my Mac just fine. A drive issue - the drive boots other cd's just fine, I've tested both an XP and the ultimate boot disk for windows... they are booting fine. A drive conflict - I have unplugged the only hard drive, leaving the DVD drive alone, still no recognition. I've tried both Ubuntu 12 and an older Ubuntu 10 CD, it refuses to recognize either one. It's like my computer has decided it will have nothing to do with Ubuntu. Any help would be greatly appreciated.

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• New EFI Laptop: After restart, Ubuntu boots to black screen?

  - by Henson S

  So, I've got this new laptop (Acer Aspire 5560 15") that's doing a funny thing.. If I cold booth the machine, everything is great! I see the grub menu, and Ubuntu 12.04 loads just fine. If I reboot within Ubuntu, I see the BIOS screen, but then nothing. No grub menu, no hard drive activity except for just a blip. I noticed that when installing Ubuntu this time, I had to create an EFI boot partition -- something I'm not used to. And I'm guessing that it has something to do with the issue. Could be totally wrong. Any ideas?

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• using heightmap to simulate 3d in an isometric 2d game

  - by VaTTeRGeR

  I saw a video of an 2.5d engine that used heightmaps to do zbuffering. Is this hard to do? I have more or less no idea of Opengl(lwjgl) and that stuff. I could imagine, that you compare each pixel and its depthmap to the depthmap of the already drawn background to determine if it gets drawn or not. Are there any tutorials on how to do this, is this a common problem? It would already be awesome if somebody knows the names of the Opengl commands so that i can go through some general tutorials on that. greets! Great 2.5d engine with the needed effect, pls go to the last 30 seconds Edit, just realised, that my question wasn't quite clear expressed: How can i tell Opengl to compare the existing depthbuffer with an grayscale texure, to determine if a pixel should get drawn or not?

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• Launch the Desktop Version of IE from the Windows 8 Start Screen

  - by Taylor Gibb

  There are two versions of Internet Explorer in Windows 8, one you can only launch from the Start Screen and the Desktop version which you can only launch from the Desktop. Lets look at how we can launch the Desktop version from the Start Screen. To get started you need to create a shortcut, so right-click on the desktop, and choose New –>  Shortcut. When you are asked for the location of the item, type the following: How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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• How to write a network game? [closed]

  - by Tom Wijsman

  Based on Why is so hard to develop a MMO?: Networked game development is not trivial; there are large obstacles to overcome in not only latency, but cheat prevention, state management and load balancing. If you're not experienced with writing a networked game, this is going to be a difficult learning exercise. I know the theory about sockets, servers, clients, protocols, connections and such things. Now I wonder how one can learn to write a network game: How to balance load problems? How to manage the game state? How to keep things synchronized? How to protect the communication and client from reverse engineering? How to work around latency problems? Which things should be computed local and which things on the server? ... Are there any good books, tutorials, sites, interesting articles or other questions regarding this? I'm looking for broad answers, but specific ones are fine too to learn the difference.

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• What's a good starting point to learn about JIT compilers?

  - by davidk01

  I've spent the past few months learning about stack based virtual machines, parsers, compilers, and some elementary things about hardware architecture. I've also written a few parsers and compilers for C like languages to understand the generic parser/compiler pipeline. Now I'd like to take my understanding further by learning about optimizing compilers and JIT compilers but I'm having a hard time finding material at the right level. I don't yet understand enough to dive into a code base like PyPy or LuaJIT but I also know more than what most introductory compiler books have to offer. So what are some good books for an intermediate beginner like to me to look into?

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• When does a game idea cross the line between homage/parody to ripoff?

  - by Daniel T.

  I'm not sure where this question belongs, but as it pertains to the development of a game idea, I figured I'd try to post it here. Recently I've been inspired to create a game based on another game I've played. However, the idea that I have is very similar to the original game. I was wondering, when does a game idea cross from being a homage or parody into the realm of being a ripoff? Are there any hard or fast rules or does this cross into a gray area?

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• PLEASE HELP RECOVER MY MINT14 BOOT/GRUB [closed]

  - by C2940680

  Hi I have following from [bootinfoscript][1] v0.61 [1Apr-2012]: I tried to do several time to do a boot-repair from YannUbuntu. However, I get error rebooting into my Linux Mint 14 Cinnamon. I have partitioned /boot, /, /home partitions. Could I still use /home partition if I recover files on to external USB and then reformatting the whole hard drive, repartition and use /home from USB drive which I have saved before? Also, I tried to install Qubes 2beta and then deleted the partition where it was stored. Also, also {my bad} I tried to copy the BOOT.CFG from sda6 to sda1 and sda2. All answers appreciated in advance. sda1: __________________________________________ File system: ext2 Boot sector type: - Boot sector info: Operating System: Boot files: /grub/grub.cfg sda2: __________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________ File system: swap Boot sector type: - Boot sector info: sda6: __________________________________________ File system: ext4 Boot sector type: - Boot sector info: Operating System: Linux Mint 14 Nadia Boot files: /boot/grub/grub.cfg /etc/fstab

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• SOA Suite 11g Developers Cookbook Published

  - by Antony Reynolds

  SOA Suite 11g Developers Cookbook Available Just realized that I failed to mention that Matt & mine’s most recent book, the SOA Suite 11g Developers Cookbook was published over Christmas last year! In some ways this was an easier book to write than the Developers Guide, the hard bit was deciding what recipes to include.  Once we had decided that the writing of the book was pretty straight forward. The book focuses on areas that we felt we had neglected in the Developers Guide, and so there is more about Java integration and OSB, both of which we see a lot of questions about when working with customers. Amazon has a couple of reviews. Table of Contents Chapter 1: Building an SOA Suite ClusterChapter 2: Using the Metadata Service to Share XML ArtifactsChapter 3: Working with TransactionsChapter 4: Mapping DataChapter 5: Composite Messaging PatternsChapter 6: OSB Messaging PatternsChapter 7: Integrating OSB with JSONChapter 8: Compressed File Adapter PatternsChapter 9: Integrating Java with SOA SuiteChapter 10: Securing Composites and Calling Secure Web ServicesChapter 11: Configuring the Identity ServiceChapter 12: Configuring OSB to Use Foreign JMS QueuesChapter 13: Monitoring and Management

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• How to add a link group to update-alternatives?

  - by Kurtosis

  Is it possible to add a custom link group to update-alternatives that is not already there by default? For example, I want to add Scala and all its supporting binaries as a link group 'scala'. I'm trying using this script, but keep getting the error: update-alternatives: error: unknown argument `' I'm not sure what that means, but after troubleshooting the script a bit with no luck, I'm wondering if update-alternatives has a hard-coded list of link groups, that can't be added to, and that doesn't include scala. PS - any chance someone with higher karma can create an update-alternatives tag? Seems this topic gets a decent number of questions, but no tag for it.

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• run a script on window switch (on alt-tabbing into/outof a particular app)

  - by hwjp

  I'd like to run a script whenever I switch into or out of a window. Specifically, I have a "toggle touchpad on/off" script, which i want to run whenever I switch into or out of gvim. so, is there any kind of hook for that? even something that can be run whenever alt-tab is detected, as long as it can tell what window you're going from/to? I'm using gnome-shell, if that makes any difference. [edit] Have started looking into gnome-shell-extensions, which seem to be written in javascript, so might not be too hard to hack one together myself...

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• Numerical stability in continuous physics simulation

  - by Panda Pajama

  Pretty much all of the game development I have been involved with runs afoul of simulating a physical world in discrete time steps. This is of course very simple, but hardly elegant (not to mention mathematically inaccurate). It also has severe disadvantages when large values are involved (either very large speeds, or very large time intervals). I'm trying to make a continuous physics simulation, just for learning, which goes like this: time = get_time() while true do new_time = get_time() update_world(new_time - time) render() time = new_time end And update_world() is a continuous physical simulation. Meaning that for example, for an accelerated object, instead of doing object.x = object.x + object.vx * timestep object.vx = object.vx + object.ax * timestep -- timestep is fixed I'm doing something like object.x = object.x + object.vx * deltatime + object.ax * ((deltatime ^ 2) / 2) object.vx = object.vx + object.ax * deltatime However, I'm having a hard time with the numerical stability of my solutions, especially for very large time intervals (think of simulating a physical world for hundreds of thousands of virtual years). Depending on the framerate, I get wildly different solutions. How can I improve the numerical stability of my continuous physical simulations?

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