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• Proper Data Structure for Commentable Comments

  - by Wesley

  Been struggling with this on an architectural level. I have an object which can be commented on, let's call it a Post. Every post has a unique ID. Now I want to comment on that Post, and I can use ID as a foreign key, and each PostComment has an ItemID field which correlates to the Post. Since each Post has a unique ID, it is very easy to assign "Top Level" comments. When I comment on a comment however, I feel like I now need a PostCommentComment, which attaches to the ID of the PostComment. Since ID's are assigned sequentially, I can no longer simply use ItemID to differentiate where in the tree the comment is assigned. I.E. both a Post and a Post Comment might have an ID of '5', so my foreign key relationship is invalid. This seems like it could go on infinitely, with PostCommentCommentComment's etc... What's the best way to solve this? Should I have a field in the comment called "IsPostComment" or something of the like to know which collection to attach the ID to? This strikes me as the best solution I've seen so far, but now I feel like I need to make recursive DataBase calls which start to get expensive. Meaning, I get a Post and get all PostComments where ItemID == Post.ID && where IsPostComment == true Then I take that as a collection, gather all the ID's of the PostComments, and do another search where ItemID == PostComment[all].ID && where IsPostComment == false, then repeat infinitely. This means I make a call for every layer, and if I'm calling 100 Posts, I might make 1000 DB calls to get 10 layers of comments each. What is the right way to do this?

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• Conditional attribute in XML - most concise solution?

  - by Lech Rzedzicki

  I am tasked with setting up conditional profiling - a method of tagging chunks of XML with an attribute, which will then be used as a conditional value to extract subset of that XML. Have a look at another definition/example: DITA profiling The XML is documents that are equivalent to printed books - i.e. documents that are often looked at by a human, even if indirectly. Therefore I am looking at a few requirements here: 1. keeping the value list brief - so it doesn't affect the readability of the document 2. be able to process with standard XML tools - a space-separated list inside an attribute is still probably fine, but I'd rather not use too much regexp for this 3. be obvious for various users, including 3rd parties, which content goes where 4. Be easy to maintain going forward Therefore one easy solution is: The problem with this: 1. As the list grows the value of the attribute can be a bit verbose 2. One needs to explicitly state every value even if it's a scenario of this vs everything else Therefore I am also looking at other approaches such as: 1. Using + and - modifiers, Apache htaccess style to override the default cascading of profiling - by default all content goes everywhere and if we want to exclude a bit we just say "-kindle". It does require parsing the whole tree, is not supported by editing tools and one needs to regexp the attribute value a bit deeper... 2. Using an intermediate file to define groups of values such as "other" or "non-print", example of this in DITA. It allows concise XML as well as different grouping and values for each document but it does create a certain level of abstraction which may make it a little less obvious for a 3rd party? Altogether, if you received such XML and were tasked to process it, which option you'd rather receive? If you have any experiences like that, even in an unrelated areas such a builds, don't hesitate to comment!

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• How do I fix my installation of ATI Catalyst Video Drivers in 12.04 LTS?

  - by Boris

  My graphic card is a Mobility Radeon HD 4200 Series. I tried these 2 answers from What is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS? But unfortunately, it does not work for me: When running the amd script, I get this error message: $ sudo sh ./amd-driver-installer-12-4-x86.x86_64.run ... DKMS part of installation failed. Please refer to /usr/share/ati/fglrx-install.log for details When checking this log file, I get: Uninstalling any previously installed drivers. Creating symlink /var/lib/dkms/fglrx/8.961/source -> /usr/src/fglrx-8.961 DKMS: add completed. Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area.... cd /var/lib/dkms/fglrx/8.961/build; sh make.sh --nohints --uname_r=3.2.0-24-generic-pae --norootcheck......(bad exit status: 1) [Error] Kernel Module : Failed to build fglrx-8.961 with DKMS [Error] Kernel Module : Removing fglrx-8.961 from DKMS Deleting module version: 8.961 completely from the DKMS tree. Done. [Reboot] Kernel Module : update-initramfs When checking with fglrxinfo, I get: $ fglrxinfo X Error of failed request: BadRequest (invalid request code or no such operation) Major opcode of failed request: 138 (ATIFGLEXTENSION) Minor opcode of failed request: 66 () Serial number of failed request: 13 Current serial number in output stream: 13

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• apt-get install kernel source error

  - by MA1

  apt-get source linux-image-$(uname -r) gives me the below error Reading package lists... Done Building dependency tree Reading state information... Done Picking 'linux' as source package instead of 'linux-image-3.0.0-12-generic' NOTICE: 'linux' packaging is maintained in the 'Git' version control system at: http://kernel.ubuntu.com/git-repos/ubuntu/ubuntu-oneiric.git Skipping already downloaded file 'linux_3.0.0-17.30.dsc' Need to get 99.9 MB of source archives. Err http://pk.archive.ubuntu.com/ubuntu/ oneiric-updates/main linux 3.0.0-17.30 (tar) 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Err http://pk.archive.ubuntu.com/ubuntu/ oneiric-updates/main linux 3.0.0-17.30 (diff) 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Failed to fetch http://pk.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux_3.0.0.orig.tar.gz 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administratorThe request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Failed to fetch http://pk.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux_3.0.0-17.30.diff.gz 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) E: Failed to fetch some archives. Can someone suggest a solution?

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• fern-wifi-cracker "Exec format error" breaks packaging system

  - by cunix

  root@cunix:/home/cunix# sudo apt-get remove fern-wifi-cracker Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libqt4-test libqt4-sql-mysql mysql-common libqt4-xmlpatterns libqt4-help python-qt4 python-sip libqt4-sql-sqlite libqt4-sql macchanger libqt4-designer libmysqlclient16 python-scapy libqt4-scripttools Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: fern-wifi-cracker 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. After this operation, 3,514kB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 167661 files and directories currently installed.) Removing fern-wifi-cracker ... dpkg (subprocess): unable to execute installed pre-removal script (/var/lib/dpkg/info/fern-wifi-cracker.prerm): Exec format error dpkg: error processing fern-wifi-cracker (--remove): subprocess installed pre-removal script returned error exit status 2 Errors were encountered while processing: fern-wifi-cracker E: Sub-process /usr/bin/dpkg returned an error code (1) how to uninstall?

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• New Visual Studio 2010 Extension - Collapse Solution

  - by MikeParks

  If your team has recently upgraded to Visual Studio 2010, take a second to check out the new Extension Manager. You can use it to browse through or install tons of tools, controls, or templates from the Visual Studio Gallery. My friend, Cory Cissell, and I recently teamed up and created an extension of our own called "Collapse Solution". It adds an option called Collapse Solution to the context menu of the solution node in the solution explorer. It also adds an option called Collapse Project to the context menu of each project node in the solution explorer. When that option is clicked, it will walk through the solution explorer tree and collapse any expanded child nodes in that section (projects, folders, code behind files, designer files, etc.). I use to have an add-in that did this in Visual Studio 2008 but it wasn't compatible when we upgraded to 2010 so we decided to write our own. The old tool was also packaged with a bunch of other junk that we didn't need so we figured it would be a much cleaner tool if it was broken off into its own extension. There's no need to install extra tools if you don't really need them. So if you have upgraded to Visual Studio 2010, please feel free to try out our Collapse Solution extension and leave us a rating/review in the Visual Studio Gallery. Thanks! Here's the link: http://visualstudiogallery.msdn.microsoft.com/en-us/2d81fec6-71f3-4fa5-87b4-c2aa18e42f92

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• VBO and shaders confusion, what's their connection?

  - by Jeffrey

  Considering OpenGL 2.1 VBOs and 1.20 GLSL shaders: When creating an entity like "Zombie", is it good to initialize just the VBO buffer with the data once and do N glDrawArrays() calls per each N zombies? Is there a more efficient way? (With a single call we cannot pass different uniforms to the shader to calculate an offset, see point 3) When dealing with logical object (player, tree, cube etc), should I always use the same shader or should I customize (or be able to customize) the shaders per each object? Considering an entity class, should I create and define the shader at object initialization? When having a movable object such as a human, is there any more powerful way to deal with its coordinates than to initialize its VBO object at 0,0 and define an uniform offset to pass to the shader to calculate its real position? Could you make an example of the Data Oriented Design on creating a generic zombie class? Is the following good? Zombielist class: class ZombieList { GLuint vbo; // generic zombie vertex model std::vector<color>; // object default color std::vector<texture>; // objects textures std::vector<vector3D>; // objects positions public: unsigned int create(); // return object id void move(unsigned int objId, vector3D offset); void rotate(unsigned int objId, float angle); void setColor(unsigned int objId, color c); void setPosition(unsigned int objId, color c); void setTexture(unsigned int, unsigned int); ... void update(Player*); // move towards player, attack if near } Example: Player p; Zombielist zl; unsigned int first = zl.create(); zl.setPosition(first, vector3D(50, 50)); zl.setTexture(first, texture("zombie1.png")); ... while (running) { // main loop ... zl.update(&p); zl.draw(); // draw every zombie }

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• Turn off Windows Defender on your builds

  - by george_v_reilly

  I've spent some time this evening profiling a Python application on Windows, trying to find out why it was so much slower than on Mac or Linux. The application is an in-house build tool which reads a number of config files, then writes some output files. Using the RunSnakeRun Python profile viewer on Windows, two things immediately leapt out at me: we were running os.stat a lot and file.close was really expensive. A quick test convinced me that we were stat-ing the same files over and over. It was a combination of explicit checks and implicit code, like os.walk calling os.path.isdir. I wrote a little cache that memoizes the results, which brought the cost of the os.stats down from 1.5 seconds to 0.6. Figuring out why closing files was so expensive was harder. I was writing 77 files, totaling just over 1MB, and it was taking 3.5 seconds. It turned out that it wasn't the UTF-8 codec or newline translation. It was simply that closing those files took far longer than it should have. I decided to try a different profiler, hoping to learn more. I downloaded the Windows Performance Toolkit. I recorded a couple of traces of my application running, then I looked at them in the Windows Performance Analyzer, whereupon I saw that in each case, the CPU spike of my app was followed by a CPU spike in MsMpEng.exe. What's MsMpEng.exe? It's Microsoft's antimalware engine, at the heart of Windows Defender. I added my build tree to the list of excluded locations, and my runtime halved. The 3.5 seconds of file closing dropped to 60 milliseconds, a 98% reduction. The moral of this story is: don't let your virus checker run on your builds.

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• Question No 207630 replied by Marco Braida

  - by kishor

  Question No 207630 replied by Marco Braid After your reply I could install Synaptic,then AptonCD,Gdebi and some other applications. I had made APTONCD. I was convienced that Ubuntu 12.04 LTS is working well. I had removed everything ( Ubuntu 12.04,Fuduntu,Linix mint 13) from my hard disk and reinstalled Ubuntu 12.04 LTS. Your sugestion which worked well earlier does not work now. I get following msg on terminal. Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: gdebi-core The following NEW packages will be installed: gdebi gdebi-core 0 upgraded, 2 newly installed, 0 to remove and 411 not upgraded. Need to get 0 B/185 kB of archives. After this operation, 1,398 kB of additional disk space will be used. Do you want to continue [Y/n]? y Media change: please insert the disc labeled 'APTonCD for ubuntu precise - amd64 (2012-10-14 10:27) DVD1' in the drive '/media/cdrom/' and press enter Media change: please insert the disc labeled 'APTonCD for ubuntu precise - amd64 (2012-10-14 10:27) DVD1' in the drive '/media/cdrom/' and press enter Media change: please insert the disc labeled 'APTonCD for ubuntu precise - amd64 (2012-10-14 10:27) DVD1' in the drive '/media/cdrom/' and press enter This is for gdebi similar msg is on terminal when I tried for Synaptic and AptonCD. I had downloaded files for Synaptic and treid but without susscess. Kishor

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• 'Binary XML' for game data?

  - by bluescrn

  I'm working on a level editing tool that saves its data as XML. This is ideal during development, as it's painless to make small changes to the data format, and it works nicely with tree-like data. The downside, though, is that the XML files are rather bloated, mostly due to duplication of tag and attribute names. Also due to numeric data taking significantly more space than using native datatypes. A small level could easily end up as 1Mb+. I want to get these sizes down significantly, especially if the system is to be used for a game on the iPhone or other devices with relatively limited memory. The optimal solution, for memory and performance, would be to convert the XML to a binary level format. But I don't want to do this. I want to keep the format fairly flexible. XML makes it very easy to add new attributes to objects, and give them a default value if an old version of the data is loaded. So I want to keep with the hierarchy of nodes, with attributes as name-value pairs. But I need to store this in a more compact format - to remove the massive duplication of tag/attribute names. Maybe also to give attributes native types, so, for example floating-point data is stored as 4 bytes per float, not as a text string. Google/Wikipedia reveal that 'binary XML' is hardly a new problem - it's been solved a number of times already. Has anyone here got experience with any of the existing systems/standards? - are any ideal for games use - with a free, lightweight and cross-platform parser/loader library (C/C++) available? Or should I reinvent this wheel myself? Or am I better off forgetting the ideal, and just compressing my raw .xml data (it should pack well with zip-like compression), and just taking the memory/performance hit on-load?

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• CodePlex Daily Summary for Saturday, May 24, 2014

  CodePlex Daily Summary for Saturday, May 24, 2014Popular ReleasesSimCityPak: SimCityPak 0.3.1.0: Main New Features: Fixed Importing of Instance Names (get rid of the Dutch translations) Added advanced editor for Decal Dictionaries Added possibility to import .PNG to generate new decals Added advanced editor for Path display entriesTiny Deduplicator: Tiny Deduplicator 1.0.1.0: Increased version number to 1.0.1.0 Moved all options to a separate 'Options' dialog window. Allows the user to specify a selection strategy which will help when dealing with large numbers of duplicate files. Available options are "None," "Keep First," and "Keep Last"C64 Studio: 3.5: Add: BASIC renumber function Add: !PET pseudo op Add: elseif for !if, } else { pseudo op Add: !TRACE pseudo op Add: Watches are saved/restored with a solution Add: Ctrl-A works now in export assembly controls Add: Preliminary graphic import dialog (not fully functional yet) Add: range and block selection in sprite/charset editor (Shift-Click = range, Alt-Click = block) Fix: Expression evaluator could miscalculate when both division and multiplication were in an expression without parenthesisSEToolbox: SEToolbox 01.031.009 Release 1: Added mirroring of ConveyorTubeCurved. Updated Ship cube rotation to rotate ship back to original location (cubes are reoriented but ship appears no different to outsider), and to rotate Grouped items. Repair now fixes the loss of Grouped controls due to changes in Space Engineers 01.030. Added export asteroids. Rejoin ships will merge grouping and conveyor systems (even though broken ships currently only maintain the Grouping on one part of the ship). Installation of this version wi...Player Framework by Microsoft: Player Framework for Windows and WP v2.0: Support for new Universal and Windows Phone 8.1 projects for both Xaml and JavaScript projects. See a detailed list of improvements, breaking changes and a general overview of version 2 ADDITIONAL DOWNLOADSSmooth Streaming Client SDK for Windows 8 Applications Smooth Streaming Client SDK for Windows 8.1 Applications Smooth Streaming Client SDK for Windows Phone 8.1 Applications Microsoft PlayReady Client SDK for Windows 8 Applications Microsoft PlayReady Client SDK for Windows 8.1 Applicat...TerraMap (Terraria World Map Viewer): TerraMap 1.0.6: Added support for the new Terraria v1.2.4 update. New items, walls, and tiles Added the ability to select multiple highlighted block types. Added a dynamic, interactive highlight opacity slider, making it easier to find highlighted tiles with dark colors (and fixed blurriness from 1.0.5 alpha). Added ability to find Enchanted Swords (in the stone) and Water Bolt books Fixed Issue 35206: Hightlight/Find doesn't work for Demon Altars Fixed finding Demon Hearts/Shadow Orbs Fixed inst...DotNet.Highcharts: DotNet.Highcharts 4.0 with Examples: DotNet.Highcharts 4.0 Tested and adapted to the latest version of Highcharts 4.0.1 Added new chart type: Heatmap Added new type PointPlacement which represents enumeration or number for the padding of the X axis. Changed target framework from .NET Framework 4 to .NET Framework 4.5. Closed issues: 974: Add 'overflow' property to PlotOptionsColumnDataLabels class 997: Split container from JS 1006: Series/Categories with numeric names don't render DotNet.Highcharts.Samples Updated s...Compile Mono With Visual Studio: 0.9 Beta 1 Release: exciting 0.9 Beta Release ( 0.9.0.2 )PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.1.3: Added CompressLogs option to the config file. Each Install / Uninstall creates a timestamped zip file with all MSI and PSAppDeployToolkit logs contained within Added variable expansion to all paths in the configuration file Added documentation for each of the Toolkit internal variables that can be used Changed Install-MSUpdates to continue if any errors are encountered when installing updates Implement /Force parameter on Update-GroupPolicy (ensure that any logoff message is ignored) ...WordMat: WordMat v. 1.07: A quick fix because scientific notation was broken in v. 1.06 read more at http://wordmat.blogspot.com????: 《????》: 《????》（c???）??“????”???????，???????????????C?????????。???????,???????????????????????. ??????????????????????????????????；????????????????????????????。Mini SQL Query: Mini SQL Query (1.0.72.457): Apologies for the previous update! FK issue fixed and also a template data cache issue.Wsus Package Publisher: Release v1.3.1405.17: Add Russian translation (thanks to VSharmanov) Fix a bug that make WPP to crash if the user click on "Connect/Reload" while the Report Tab is loading. Enhance the way WPP store the password for remote computers command.MoreTerra (Terraria World Viewer): More Terra 1.12.9: =========== = Compatibility = =========== Updated to account for new format 1.2.4.1 =========== = Issues = =========== all items have not been added. Some colors for new tiles may be off. I wanted to get this out so people have a usable program.LINQ to Twitter: LINQ to Twitter v3.0.3: Supports .NET 4.5x, Windows Phone 8.x, Windows 8.x, Windows Azure, Xamarin.Android, and Xamarin.iOS. New features include Status/Lookup, Mute APIs, and bug fixes. 100% Twitter API v1.1 coverage, Async, Portable Class Library (PCL).CS-Script for Notepad++ (C# intellisense and code execution): Release v1.0.26.0: Added access to the Release Notes during 'Check for Updates...'' Debug panels Added support for generic types members Members are grouped into 'Raw View' and 'Non-Public members' categories Implemented dedicated (array-like) view for Lists and Dictionaries http://download-codeplex.sec.s-msft.com/Download?ProjectName=csscriptnpp&DownloadId=846498ClosedXML - The easy way to OpenXML: ClosedXML 0.70.0: A lot of fixes. See history.TBox - tool to make developer's life easier.: TBox 1.29: Bug fixing. Add LocalizationTool pluginYAXLib: Yet Another XML Serialization Library for the .NET Framework: YAXLib 2.13: Fixed a bug and added unit tests related to serializing path like aliases with one letter (e.g., './B'). Thanks go to CodeProject user B.O.B. for reporting this bug. Added `Bin/*.dll.mdb` to `.gitignore`. Fixed the issue with Indexer properties. Indexers must not be serialized/deserialized. YAXLib will ignore delegate (callback/function pointer) properties, so that the exception upon serializing them is prevented. Significant improve in cycling object reference detection Self Referr...SFDL.NET: SFDL.NET (2.2.9.2): Changelog: Neues Icon Xup.in CnL Plugin BugfixNew ProjectsA minimal UDP based logger: a minimal udp loggerApr-Jul-2014: Educational project for studying .NET and C#CliqSafe - Safe Email - An Add on for Microsoft Outlook & Windows Mobile Devices: CliqSafe - Safe Email - An Add on for Microsoft Outlook & Windows Mobile Devices:CodePlex Testing Project: Project for testing codeplex features.EF6: Project EF6electronixwebform: tesekkürü bir borc bilirizelektronix: tesekkuru bir borc bilirizI-Ching: This class can generate fortune telling phrases with the I-Ching book of changes.J-Processors: Various project to develop microprocessors based on FPGAs and a hardware decription language. Software environment for operation.Kart-Trie: Manage and search associative array with Kart tree.NewBreeze: NewBreeze - Fast and light-weight Qt4 based File ManagerOE Orchard Project: interactive educationPostal: Postal is a collection of open-source aspects for PostSharp.SoundCloud Downloader: SoundCloud Downloader for people who are searching for one!Ternary Search Tree: This class can insert and search text using ternary search trees.?????-?????【??】?????????: ????????????,????,?????、???、?????,???????,?????,???????????100%。??????！ ?????-?????【??】?????????: ?????????????????????,??????,???????????,????????????????,????????.??????. ?????-?????【??】?????????: ???????????????:??????!?????!???:????、????、????、????。??,??????????!??????. ?????-?????【??】?????????: ???????????????????????,????,????“???、???、???”?????,?????,?????????????????。??????！ ?????-?????【??】?????????: ????????,???????????,??????????,????:??,????,???????? ??????????,????????。??????！ ?????-?????【??】?????????: ??????????????,????????????,????????,???,???????????,????,????。?????,??????. ?????-?????【??】?????????: ???????????????????????,????,????“???、???、???”?????,?????,?????????????????。??????！ ?????-?????【??】?????????: ???????2005?,????????????????????,??????????,??????。?????,???????????????????，??????！ ?????-?????【??】?????????: ???????2005?,????????????????????,??????????,??????。?????,???????????????????，??????！ ?????-?????【??】?????????: ???????????????:??????!?????!???:????、????、????、????。??,??????????!??????. ?? API C# ??: ??.NET，?? C# ????? API ????，????????? API。?????-?????【??】?????????: ?????1992?,????????????????。??????????????????????。????????????,????，????????！ ?????-?????【??】?????????: ????????????,????,?????、???、?????,???????,?????,???????????100%。??????！ ?????-?????【??】?????????: ???????????????????????,???????????,??????,??????????????...????????。??????！ ?????-?????【??】?????????: ??????????????,????????????,????????,???,???????????,????,????。?????,??????. ?????-?????【??】?????????: ???????????????,??????,??????,??????、??????,??????、??，????，??????！ ?????-?????【??】?????????: ????????,???????????,??????????,????:??,????,???????? ??????????,????????。??????！ ?????-?????【??】?????????: ??????、??????????????????,???????.??????????,????????。 ?????-?????【??】?????????: ???????????????????????,???????????,??????,??????????????...????????。??????！ ?????-?????【??】?????????: ?????????????????????,??????,???????????,????????????????,????????.??????. ?????-?????【??】?????????: ?????1992?,????????????????。??????????????????????。????????????,????，????????！ ?????-?????【??】?????????: ??????、??????????????????,???????.??????????,????????。

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• How can i fix some broken packages PyQt packages?

  - by Jorge

  I'm trying to install PyQt but i've met some difficulties (i.e packages that won't be updated and stuff like that). I'm not very proficient with Ubuntu, so some help is needed. Here's the output i get from the terminal: sudo apt-get install python-qt4 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: python-qt4 : Depends: libqt4-declarative (>= 4:4.7.0~rc1) but it is not going to be installed Depends: libqt4-designer (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-help (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-script (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-scripttools (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-svg (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-test (>= 4:4.7.0) but it is not going to be installed Depends: libqt4-xmlpatterns (>= 4:4.7.0) but it is not going to be installed E: Broken packages

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• How to uninstall java6

  - by infaustus

  I am trying root@vz10931:/var/www/mailer# apt-get remove --purge sun-java6-bin 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 (>= 6.24-1build0.8.04.1) but it is not going to be installed sun-java6-jre: Depends: java-common (>= 0.24) but it is not installable Depends: sun-java6-bin (>= 6.24-1build0.8.04.1) but it is not going to be installed or ia32-sun-java6-bin (>= 6.24-1build0.8.04.1) but it is not installable vim: Depends: vim-common (= 1:7.1-138+1ubuntu3.1) but 2:7.3.154+hg~74503f6ee649-2ubuntu3 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). Below are my sources.list deb http://pl.archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse deb-src http://pl.archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse deb http://pl.archive.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse deb-src http://pl.archive.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse deb http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse Ubuntu version - Hardy Heron Anyone know how to remove java ?

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• Which algorithms/data structures should I "recognize" and know by name?

  - by Earlz

  I'd like to consider myself a fairly experienced programmer. I've been programming for over 5 years now. My weak point though is terminology. I'm self-taught, so while I know how to program, I don't know some of the more formal aspects of computer science. So, what are practical algorithms/data structures that I could recognize and know by name? Note, I'm not asking for a book recommendation about implementing algorithms. I don't care about implementing them, I just want to be able to recognize when an algorithm/data structure would be a good solution to a problem. I'm asking more for a list of algorithms/data structures that I should "recognize". For instance, I know the solution to a problem like this: You manage a set of lockers labeled 0-999. People come to you to rent the locker and then come back to return the locker key. How would you build a piece of software to manage knowing which lockers are free and which are in used? The solution, would be a queue or stack. What I'm looking for are things like "in what situation should a B-Tree be used -- What search algorithm should be used here" etc. And maybe a quick introduction of how the more complex(but commonly used) data structures/algorithms work. I tried looking at Wikipedia's list of data structures and algorithms but I think that's a bit overkill. So I'm looking more for what are the essential things I should recognize?

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• dpkg behaving strangely?

  - by Tom Henderson

  When I use apt to get a package, I have been receiving the same error message. Here is an example trying to install wicd (which is already installed): Reading package lists... Building dependency tree... Reading state information... wicd is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 3 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up tex-common (2.06) ... debconf: unable to initialize frontend: Dialog debconf: (Dialog frontend requires a screen at least 13 lines tall and 31 columns wide.) debconf: falling back to frontend: Readline Running mktexlsr. This may take some time... done. No packages found matching texlive-base. dpkg: error processing tex-common (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of texlive-binaries: texlive-binaries depends on tex-common (>= 2.00); however: Package tex-common is not configured yet. dpkg: error processing texlive-binaries (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of dvipng: dvipng depends on texlive-base-bin; however: Package texlive-base-bin is not installed. Package texlive-binaries which provides texlive-base-bin is not configured yet. dpkg: error processing dvipng (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: tex-common texlive-binaries dvipng E: Sub-process /usr/bin/dpkg returned an error code (1) I'm not sure if this is a problem with apt or with dpkg, but it certainly doesn't look good!

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• How to Fake Back and Forward Buttons With a Three-button Mouse

  - by Erez Zukerman

  If you’re stuck using a three-button mouse, this doesn’t mean you have to give up on the comfort of Back and Forward browser buttons. Using a simple AutoHotkey script, you could set your mouse up so that you can hold the right mouse button and scroll the wheel to emulate these all-important buttons. Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Sync Blocker Stops iTunes from Automatically Syncing The Journey to the Mystical Forest [Wallpaper] Trace Your Browser’s Roots on the Browser Family Tree [Infographic] Save Files Directly from Your Browser to the Cloud in Chrome and Iron The Steve Jobs Chronicles – Charlie and the Apple Factory [Video] Google Chrome Updates; Faster, Cleaner Menus, Encrypted Password Syncing, and More

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• Strategy for managing lots of pictures for a website

  - by Nate

  I'm starting a new website that will (hopefully) have a lot of user generated pictures. I'm trying to figure out the best way to store and serve these pictures. The CMS I'm using (umbraco) has a media library that puts a folder on the server for each image. Inside of there you can have different sizes of that same image. That folder has an ID on it and the database has additional information for that image along with the ID of the folder. This works great for small sites, but what if the pictures get up to 10,000, 100,000 or 1,000,000? It seems like the lookup on the directory would take a long time to find the correct folder. I'm on windows 2008 if that makes a difference. I'm not so worried about load. I can load balance my server pretty easily and replicate the images across the servers. The nature of the site won't have a lot of users on it either, but it could have a lot of pics. Thanks. -Nate EDIT After some thought I think I'm going to create a directory for each user under a root image folder then have user's pictures under that. I would be pretty stoked if I had even 5,000 users, so that shouldn't be too bad of a linear lookup. If it does get slow I will break it down into folders like /media/a/adam/image123.png. If it ever gets really big I will expand the above method to build a bigger tree. That would take a LOT of content though.

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• Ignore Partial Upgrade -- Google Earth Dependencies

  - by pyraz

  I'm running a 64-bit install of Xubuntu 12.04. It took me a little while to get Google Earth working. The 64-bit Google earth package requires some 32-bit gtk libraries provided by ia32-libs. However, when I ran a simulation to install ia32-libs and it's dependencies, it wanted to remove a ton of programs, including the xubuntu-desktop meta-package. As a work-around, I used getlibs to get the 32-bit libraries I needed, and then installed Google Earth with the deb package and the --ignore-depend option to dpkg. Awesome, Google Earth is installed and is working great! Now, however, Update Manager keeps complaining about a "Partial Upgrade", and apt-get won't let me install any new applications. It wants me to do a fix-broken install, but when I do a simulation of apt-get -f install I get some very bad news, they want to uninstall the Google Earth I just worked so hard to install! $> apt-get -f -s install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: googleearth 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. Remv googleearth [6.0.3.2197+0.7.0-1] TL;DR The --ignore-depends passed to dpkg is not propagating to apt-get, so now I can't install any new applications until I uninstall Google Earth, because of it's missing dependencies (even though it works fine without them). How can I fix this?

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• MEncoder Install on Ubuntu

  - by Tauqeer Ahmad

  I am writing this after checking almost all the posts but none of those solved my problem. I am trying to install mencoder to process some videos but there are strange errors coming. For examples when I try sudo apt-get install mencoder the following errors comes out: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mencoder : Depends: mplayer Depends: libasound2 (> 1.0.24.1) Depends: libavcodec53 (>= 4:0.8~beta2-2) but it is not installable or libavcodec-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libavformat53 (>= 4:0.8~beta2-2) but it is not installable or libavformat-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libcdparanoia0 (>= 3.10.2+debian) but it is not installable Depends: libenca0 (>= 1.9) but it is not installable Depends: libfontconfig1 (>= 2.8.0) but it is not installable Depends: libgif4 (>= 4.1.4) but it is not installable Depends: libjpeg8 (>= 8c) but it is not installable Depends: liblzo2-2 but it is not installable Depends: libsmbclient (>= 3.0.24) but it is not installable Depends: libspeex1 (>= 1.2~beta3-1) but it is not installable Depends: libtheora0 (>= 1.0) but it is not installable E: Unable to correct problems, you have held broken packages. Can anyone help to solve this issue. I tried to find static builds of MEncoder but could not.

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• How do I transition from WUBI to a native installation?

  - by Sammy Black

  I have Ubuntu 10.04 Lucid installed through wubi on my laptop (it came with Windows 7 preinstalled). This was my first foray into Linux, and I'm here to stay. I have no use for Windows, and yet I must manually choose not to boot into it! Should I shrink the Windows partition to something negligible and grow the Linux one using something like gparted or fdisk, and just be content that everything runs? In that case, I need to understand the filesystems. Which is which? Here's the output of $ df -h: Filesystem Size Used Avail Use% Mounted on /dev/loop0 17G 11G 4.5G 71% / none 1.8G 300K 1.8G 1% /dev none 1.8G 376K 1.8G 1% /dev/shm none 1.8G 316K 1.8G 1% /var/run none 1.8G 0 1.8G 0% /var/lock none 1.8G 0 1.8G 0% /lib/init/rw /dev/sda3 290G 50G 240G 18% /host I would prefer to start over with a clean install of 10.10 Maverick, but I fear what I may lose. Certainly, I will backup my home directory tree (gzip?), but what about various pieces of software that I've acquired from the repositories? Can I keep a record of them? By the way, I asked a similar question over on Ubuntu forums.

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• Strategy for managing lots of pictures for a website

  - by Nate

  I'm starting a new website that will (hopefully) have a lot of user generated pictures. I'm trying to figure out the best way to store and serve these pictures. The CMS I'm using (umbraco) has a media library that puts a folder on the server for each image. Inside of there you can have different sizes of that same image. That folder has an ID on it and the database has additional information for that image along with the ID of the folder. This works great for small sites, but what if the pictures get up to 10,000, 100,000 or 1,000,000? It seems like the lookup on the directory would take a long time to find the correct folder. I'm on windows 2008 if that makes a difference. I'm not so worried about load. I can load balance my server pretty easily and replicate the images across the servers. The nature of the site won't have a lot of users on it either, but it could have a lot of pics. Thanks. -Nate EDIT After some thought I think I'm going to create a directory for each user under a root image folder then have user's pictures under that. I would be pretty stoked if I had even 5,000 users, so that shouldn't be too bad of a linear lookup. If it does get slow I will break it down into folders like /media/a/adam/image123.png. If it ever gets really big I will expand the above method to build a bigger tree. That would take a LOT of content though.

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• Unable to install Dockmanager

  - by Mark Rooney

  I have Docky installed on Ubuntu 10.10 64bit and noticed after a recent upgrade my 'Helpers' are no longer available. After some research I found that Dockmanager is no longer installed either. I am unable to install it via the Software centre or via terminal using apt-get, the following error is returned; mark@Sonata:~$ sudo apt-get install dockmanager Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: dockmanager 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 0B/94.4kB of archives. After this operation, 430kB of additional disk space will be used. (Reading database ... 162015 files and directories currently installed.) Unpacking dockmanager (from .../dockmanager_0.1.0~bzr83-0ubuntu1~10.10~dockers1_amd64.deb) ... dpkg: error processing /var/cache/apt/archives/dockmanager_0.1.0~bzr83-0ubuntu1~10.10~dockers1_amd64.deb (--unpack): trying to overwrite '/usr/share/dockmanager/data/skype_invisible.svg', which is also in package faenza-icon-theme 0.8 dpkg-deb: subprocess paste killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/dockmanager_0.1.0~bzr83-0ubuntu1~10.10~dockers1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) mark@Sonata:~$ Can anyone advise on how to fix this?

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• So are we ever getting the technological singularity

  - by jsoldi

  I´m still waiting for an AI robot that will pass the Turing test. I keep going back to http://www.a-i.com/ and nothing. I don´t know much about AI but, did anyone ever tried to make a genetic algorithm whose evolution algorithm itself evolves? Or how about one whose algorithm that makes the genetic algorithm evolve, evolves? Or one whose genetic algorithm that makes the genetic algorithm that makes the genetic algorithm evolve, evolves? Or how about an algorithm that abstracts all this into a potentially infinitely deep tree of genetic evolution algorithms? Aren´t we just failing as programmers? And I don´t think we can blame the processors speed. If you make and application that simulates consciousness you will get a Nobel prize no matter how many hours it takes to respond to your questions. But nobody did it. It almost reminds me to Randi´s $1000000 paranormal challenge. As I keep going back to AI chat bots, they keep getting better at changing the subject on a way that seems natural. But if I tell them something like "if 'x' is 2 then whats two times 'x'?" then they don't have a clue what I'm talking about. And I don't think they need a whole human brain simulation to be able to answer to something like that. They don't need feelings or perception. This is just language and logics. I don't think my perception of the color red gives me the ability to understand that if 'x' is 2 then two times 'x' is 4. I'm sure we are just missing some elemental principle we cannot grasp because it's probably stuck behind our eyes. What do you think?

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• Persistent "held broken packages" error

  - by stoplan

  sudo apt-get update && sudo apt-get install netflix-desktop gives the error The following packages have unmet dependencies: netflix-desktop : Depends: wine-browser-installer but it is not going to be installed E: Unable to correct problems, you have held broken packages. but dpkg --get-selections | grep hold shows nothing. I'm running 12.04 64-bit. I've followed the directions in How do I resolve unmet dependencies?: Confirmed that main, universe, restricted and multiverse software sources are enabled sudo apt-get clean sudo apt-get -f install (returning '0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.') sudo dpkg --configure -a sudo apt-get -f install (again '0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.) sudo apt-get -u dist-upgrade (0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.) used Y PPA Manager to check for duplicate ppas (none found) [Edit] I have had the same error with other packages. Here's the output requested by Alaa: sudo apt-get install wine-browser-installer Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine-browser-installer : Depends: wine-compholio (= 1.5.19~precise1) E: Unable to correct problems, you have held broken packages.

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• The New OEPE 12.1.1.2 is Out - ADF Development and More

  - by Juan Camilo Ruiz

  Yes you are reading it right. Having announced just last week the general availability of our OEPE release 12.1.1.1.1 which includes support for developing applications to the Oracle Cloud. Today we are happy to announce the release of OEPE 12c (12.1.1.2) which includes various improvements for Webservices policies and security, and new features for implementing ADF applications in Eclipse Juno (3.8.1 and 4.2.1) as well as, bug fixes for other areas of the product - all of the above on top of Oracle Cloud support from the previous release. Many of the new features on this release have been added based on the feedback that we got from the ADF community, so, many thanks to you all and please, keep them coming! The main new features for this release are: ADF Bindings support on Taskflow activities on the diagram. Support for multi-node tree component bidings. Automatic ID generation for ADF Faces components. Support drag-n-drop of components and bindings into the page outline in addition to the regular jsp editor. Improved Webservices policies and security.  You can download the new versión from here. Remenber that you can send us your feedback or post your questions on our forum on OTN The OEPE Team. 

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