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  • Adding Bzr Launchpad PPA to Ubuntu Hardy

    - by Robery Stackhouse
    I've got TortoiseBazaar installed on my Windows laptop, and I was trying to branch a repository hosted on my VPS to another directory on my VPS, and I got this lovely error: bzr: ERROR: Unknown branch format: 'Bazaar Branch Format 7 (needs bzr 1.6) That lead me to this mailing-list archive: http://osdir.com/ml/bazaar/2009-06/msg00692.html Then I tried following the instructions here to add the Launchpad PPA to /etc/apt/sources.list, but they forgot to mention that you need to do this: sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com D702BF6B8C6C1EFD Which I found out about here after I got this error: GPG error: http://ppa.launchpad.net hardy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D702BF6B8C6C1EFD after modifying my /etc/apt/sources.list and running: sudo apt-get update Just thought I'd save someone else some pain. And of course, don't forget to uninstall the version of bzr that wouldn't play ball in the first place.

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  • JDeveloper and Upgrading Your JDK on Ubuntu

    - by Duncan Mills
    One little gotcha, if you, as I did recently, upgrade your JDK on Ubuntu then you may have to make sure you reflect that change in a couple of places for JDeveloper to stay happy. Assuming that you've installed from the jar version of the JDeveloper installer, then the JDK that you specified at install time will be recorded in the .jdev_jdk file in your home directory.However, be aware that this is not the only reference to the absolute path of the JDK. When you run the embedded WebLogic for the first time then the .jdeveloper/system11.1.1.3.37.56.60/DefaultDomain/bin/startWebLogic.shscript will be created, and associated with that, the setDomainEnv.sh script in the same directory. So, if you do want to change the JDK location be sure to change this file as well. (or of course do everything with symbolic links)

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  • Translating error messages from an external API?

    - by Jan Fabry
    If I am localizing a piece of software that uses an external API, how should I handle error messages that originate in this API? I do not control the API, I only consume it. The error responses are not very structured: some contain error codes, some contain verbose details in the text, others almost nothing. Some errors can be fixed by the user (incorrect configuration), some are caused by the external service (server overload), some could be caused by a bug in my software (of course, this would be very unlikely...). I would like to provide a smooth experience to my end-users, so they know what went wrong and what they can do to fix it. What is the best strategy to use here? (This is a generalization of a question from the WordPress Stack Exchange. I thought it would be worth re-asking here, because it is not limited to WordPress plugins.)

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  • Fast pixelshader 2D raytracing

    - by heishe
    I'd like to do a simple 2D shadow calculation algorithm by rendering my environment into a texture, and then use raytracing to determine what pixels of the texture are not visible to the point light (simply handed to the shader as a vec2 position) . A simple brute force algorithm per pixel would looks like this: line_segment = line segment between current pixel of texture and light source For each pixel in the texture: { if pixel is not just empty space && pixel is on line_segment output = black else output = normal color of the pixel } This is, of course, probably not the fastest way to do it. Question is: What are faster ways to do it or what are some optimizations that can be applied to this technique?

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  • How do I Fallback to Older DirectX Versions?

    - by smoth190
    I had a feeling that it would be easier to tackle this problem before I got too deep into development (unless, of course if that's a bad idea/the hard way, please inform me...). I'm creating my game to be run ideally on DirectX 11, however, I want to offer it on DirectX 10, and I'm unsure if it is worth offering it for DirectX 9 for XP users. I'm not too sure how this fallback even works, as I can't find many articles on the internet. If someone could give me an in-depth article, that would be great. I've read a little about how since DirectX11 is completely absent on XP, it is hard to even check for support. Someone mentioned having multiple applications for each version, is this a good idea? Thanks to anyone who can point me in the right direction here.

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  • When would I use pseudocode instead of flowchart?

    - by user1276078
    I'm a student working with various techniques of programming, and I've come across pseudocode and flowchart. I know that these are both used in order to think through the problem before actually programming, but I have a few questions with this. When would I use pseudocode to plan out and when would I use flowcharts? Or is it better to do both before actually programming. Particularly for a small arcade sort of game in JAVA since that is my next project. I've noticed that pseudocode is very similar to the actual code rather than flowcharts. Would this make pseudocoding better because you essentially copy/paste the pseudocode into your program (of course, you have to change it to fit the language. I understand that part). Is it practical to use both of these while programming? Particularly the same game mentioned earlier. Thanks.

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  • Do Apple and Google ask for a share if custom payment is done in a free app?

    - by user1590354
    I have a multiplatform game (web/iOS/Android) in the making. In the free version the core game is still fully playable but people who choose to pay will get more social features (and no ads, of course). I was thinking that rather than having a free and a paid version for all the platforms I may release the apps just for free and if the users want more, they have to register and pay a one-time fee (through a payment gateway or PayPal). The extra content would then be available in all the clients they have access to. Theoretically, this means a better value for the players and less maintenance and headache for me (obviously I have to handle all the payment troubles myself). Does it fit into the business model of Apple/Google? Or will they still claim their share of the registration fee?

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  • New MySQL 5.6 Developer Certification and Training

    - by Breanne Cooley
    For those of you who work with MySQL, we've got some great news for you! A wide range of Oracle MySQL teams, including training, engineering, sales consulting and members of MySQL Support, collected content for the new MySQL 5.6 Developer Certification exam. These team members assist developers and DBAs with MySQL questions on a daily basis. They understand what developers need to know to successfully develop applications against MySQL Server 5.6. The MySQL 5.6 Developer Certification Exam details are listed here.  Naturally, this certification process covers the same ground as Oracle's MySQL Training for Developers course, making it ideal for reviewing topics to help you pass the exam. More importantly, you will learn how to develop successful applications that use MySQL Server 5.6 as a data store.  -Diana Gray, Principal Curriculum Project Manager, Oracle University

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  • Weird unexpected image compression on a web server running Apache on Ubuntu?

    - by Billy Bob Thornton
    I have a weird problem on my production web server running Apache on Ubuntu: it compresses my images thereby dramatically lowering their quality! Actually I have two virtual hosts running, each located in a different folder. Wether I display .gif images by navigating on the two sites, or acceding them directly by their url, their size and quality are invariably degraded. I tried with three different browsers: same problem. Using them on other sites on the Web: no problem. Of course I disabled mod_deflate on the server (which should not compress images anyway), but the phenomenon remains. On my local développement server, running the same configuration, everything is Ok. Now I'm completely lost! For the record, my configuration: Ubuntu 10.04, Apache 2, Php 5.

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  • Double sides face with two normals

    - by Marnix
    I think this isn't possible, but I just want to check this: Is it possible to create a face in opengl that has two normals? So: I want the inside and outside of some cilinder to be drawn, but I want the lights to do as expected and not calculate it for the normal given. I was trying to do this with backface culling off, so I would have both faces, but the light was wrongly calculated of course. Is this possible, or do I have to draw an inside and an outside? So draw twice?

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  • Merge home directory after fresh installation with existing (Gentoo) home

    - by jhwist
    I reinstalled my desktop machine with Ubuntu 10.10., coming from Gentoo where I used XFCE. My home is usually NFS-mounted from a server. During the install I let the installer set up my user, but of course my NFS-home wasn't mounted then; I have a regular /home/user now. If I mv /home /home.old and mount my NFS-home to /home instead, I cannot login because Gnome complains about some config-files (sorry, no exact error message as there is no way to copy&paste this). Which of my /home.old/user directories do I have to copy over to my NFS-home so that Gnome is happy again?

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  • Game World Design [on hold]

    - by GameDev
    I have one doubt about world game developing. I want to do a kind of platform game mixed with RPG (Side Scroll). What's the best to draw the world, - Draw everything than use the camera to move around the world - Draw just what you see as the player moves draw the new stuff. I'm new at this and didn't had any course for it. So if anyone can help me thanks :) PS: Any recommendation to learning game concept, like drawing world theory, play etc.. (not code and i want to 2D and i only see books for 3D stuff)

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  • How to install the full Gnome 3 desktop in ubuntu

    - by Relik
    Just like the title says. I don't want just Gnome Shell I want to know how to install the whole entire desktop, with the latest GDM(not the 3.0.4 currently in the repos), all the default apps, all of it. I want to have a gnome desktop as pure as the latest Fedora, but of course I don't actually want to use fedora I been a Ubuntu user for years. Any ideas? or am I crazy? I cant find anyone else doing this, though I have found a few other people who want to do it. I currently have Gnome Shell 3.4, but I cant figure out how to install the new login screen, and I don't know what apps install by default other than epiphany and empathy, I also don't know if there is still more missing than just those things listed. I would really enjoy the full Gnome 3 experience.

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  • Why LLBLGen Pro v3.0 is better than the regular designer for EF v4.0

    As a comment to my blogpost about the 12 minute long video of LLBLGen Pro with Entity Framework v4.0, Burton Roberts asks: Could you list the advantages of using llblgen pro 3 with Entity Framework versus using EF alone? Of course! Now, I know these posts are often classified as 'marketing' but so be it. Why is the LLBLGen Pro v3.0 designer better for Entity Framework v4.0 than the regular Entity Framework designer? Below I'll give an (incomplete) list of features you have at your disposal...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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  • Understanding the problem when things break in production

    - by bitcycle
    Scenario: You push to production The push broke multiple things That same build did not break qa or dev As a developer, you don't have prod access. There is lots of pressure from above to get things working agian. Specifics: PHP/MVC application that is API-driven in Zend. Deployed to a few servers. My question: While investigating, lets say I have a hunch that something is wrong. But, I don't know for sure. And, of course, I can't test things in production. If I have a suggested fix based on that hunch, would it be wise to try and apply it and see if it works, before understanding what the problem is?

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  • Reinstalling GRUB2 on Ubuntu 12.04 | Windows 7 dual boot after Windows reinstallation

    - by Shasteriskt
    So I had the perfect Ubuntu 12 / Windows 7 dual boot set-up -- until I had to re-install Windows 7. After the deed, GRUB2 was of course wiped out, thus my Ubuntu installation is rendered inaccessible. I have tried these steps: mount /dev/sda5 /mnt #This is where my Ubuntu installation resides. mount /dev/sda1 /mnt/boot #Indicated by the `*` under `Boot` when doing `fdisk -l` mount --bind /mnt/proc /proc mount --bind /mnt/sys /sys mount --bind /mnt/dev /dev sudo chroot mnt sudo grub-install /dev/sda sudo update-grub #Then unmounted everything... Unfortunately, only my Windows 7 has been detected and the Ubuntu entries never appeared in the prompt. Only my Windows 7 installation (/dev/sda1) is available in the GRUB2 menu. How can I rectify this?

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  • Ultra-quick Samsung WebKit review

    On Thursday I got a Samsung bada test phone (the Wave) that runs the latest installment of Samsung WebKit, and of course I subjected it to various tests. The verdict is clear: excellent browser. As far as I’m concerned it ousts Opera Mobile from my personal top three.Judge for yourself. This is what the latest Samsung WebKit supports: It scores second, after Safari 4 for desktop, in my great WebKit test. It leaves both iPhone and Android in the dust; although I haven’t yet tested Android 2.1 and...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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  • Using my own code in freelance projects.

    - by Witchunter
    I have been into freelance business for more than 2 years. While doing projects for other people, I've build a compilation of common tasks that I implement in projects and put them into code. It's kind of a library with some functions that I can reuse without having to rewrite the same thing dozen times. I'm talking about accessing Access databases, downloading information from FTP and similar stuff. Is this acceptable from a legal point of view? What's the difference in reusing the old code and rewriting it from the scratch (using you own brain again, therefore the exact same logic)? I do not hold any copyright to it, of course, and provide the source code for these classes to my clients.

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  • How much will cost to hire a developer who have to make a SEO software? [closed]

    - by Victor
    Hey guys, I know NOTHING about software developing but I got an amazing idea about a software. The thing is I want to know how much money I would approximately need to hire someone to do it for me. The software is gonna have a lot of features, everything is relative to SEO - link building with Web 2.0 sites, Blog comments, Video Submittion, Bookmarking, RSS, Ping Mode, Forum register and submittion, Proxy mode, ect. The point is to be all automated! I mean all profile creation is going to be automate! There are a lot of softwares but nothing is doing everything that I want. So I would like to build my own software, use it for on my own and of course I'll sell it too! So how much do you think I would need to be able to order such a software?

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  • Watch the Live Broadcast of the Silverlight 4 Launch Event

     Want to be at DevConnections for the Silverlight 4 Launch but can;t make it? No worries, you can watch as Scott Guthrie launches Silverlight 4. Following the keynote you can watch Scott in special one hour edition of "Ask the Gu" along with other Silverlight folk like me to answer your questions on Channel 9 Live. To watch the keynotes and Channel 9 Live coverage head to http://live.ch9.ms on April 12th and 13th. Silverlight required, of course :)  To be a part of the conversation...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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  • What good Social Networking Site solutions there are? [closed]

    - by ZetsubouWebmaster
    What good and free Social Networking Site solutions there are? I tried many options but most of them are either too complicated, too simple, or just do not work... I tried: Dolphin, DZOIC-Handshakes, elgg, Oxwall, SocialEngine, and some plugins for wp and other CMS. I don't need much, just: groups, chats, forums, profiles, PM, photos, pages, comments, search, statistics. Most of which included in pretty much every CMS out there, but not all.. So, what good solutions there are? Also I don't mind paying some money (I guess no more then $200), but I'd prefer if it was a free open source engine. Of course it should be PHP+MySQL based.

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  • Modern.IE VM license

    - by Thomas W.
    Microsoft provides some VMs for testing purposes (advertised on StackOverflow) and I'm trying to understand the license terms. The one I don't really understand is 1.b. You may use the software for testing purposes only. You may not use the software for commercial purposes. My thoughts: a) Testing a website in several browsers on several different virtual machines seems a quite professional approach. I hardly believe many private developers would do that. Of course they should, but which private developer has the time to do so? b) If that's really only available to private developers, what is the offer to companies doing the same thing? I am missing the advertisement for a paid service. My question as a non-native English speaker: Is testing by a company considered as a commercial purpose? Can I use the VMs within a company for testing or not?

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  • Error trying to install the Java SDK

    - by Ray
    I need to install the Java 6 SDK, but after running this: sudo apt-get install sun-java6-jdk sun-java6-jre sun-java6-source I end up with this: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sun-java6-jdk : Depends: sun-java6-bin (>= 6.26-1lucid1) but it is not going to be installed sun-java6-jre : Depends: sun-java6-bin (>= 6.26-1lucid1) but it is not going to be installed or ia32-sun-java6-bin (>= 6.26-1lucid1) but it is not installable Recommends: gsfonts-x11 but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). I'm quite new to Ubuntu and need the packages for my course. I guess they've become corrupted but, how can I fix this?

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  • InstantWild: Identify Animals From Around the World; Help Scientists

    - by Jason Fitzpatrick
    Web-based/iPhone: InstantWild is an iOS and web application that displays research cameras from around the world; help scientists by turning your eco-voyeurism into positive identification of endangered species. It’s a neat mashup of a fun application and legitimate research. There are hundreds of remote cameras set up around the world, designed to capture photographs of animals (especially endangered ones) in their native habitats. When you visit InstantWild (or load the app on your iPhone) you’re treated to pictures from all around the world. In the course of browsing those photos from around the world you can help out by tagging the animals in the photos to assist zoologists and other scientists in their research. Hit up the link below to check out the web-based version and even grab a copy for your phone. InstantWild [via Wired] Amazon’s New Kindle Fire Tablet: the How-To Geek Review HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS Use Your Android Phone to Comparison Shop: 4 Scanner Apps Reviewed

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  • Just interviewed, turned down, now got an email asking to chat with recruiter. No response. What should I do? [closed]

    - by Lambert
    I was turned down after two interviews by a prominent company for an internship, and only a couple days later, I was asked when I had 10-15 minutes to chat today. Of course, I loved to, so I emailed within just 10 minutes of their email and let them know what times I was available at, and asked them when the best time should be, and if I should go somewhere or expect a phone call. No reply has come from them since yesterday afternoon, the recruiter wanted to talk to me today. I don't want to lose this opportunity, but I have no way to contact the recruiter other than by email, and the recruiter hasn't responded to my emails from yesterday, even though we were supposed to talk today. What's the best thing I can do (preferably within the next few hours!) to get the job? Is that even probably why she emailed me, or was a different reason likely? Any ideas?

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