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• apt-get error, cannot install many packages?

  - by tech

  How do I fix this? It shows an error, and I don't know how to fix it. I want to install crossover. Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... failed. The following packages have unmet dependencies: crossover:i386 : Depends: libc6:i386 (>= 2.3) but it is not installed Depends: libice6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libsm6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libx11-6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libxext6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libfreetype6:i386 but it is not installed Depends: libz1:i386 Depends: perl5-base:i386 Depends: perl-modules:i386 but it is not installable Depends: python:i386 (>= 2.4) but it is not installed Depends: python-gtk2:i386 but it is not installed Depends: python-glade2:i386 but it is not installed Depends: desktop-file-utils:i386 but it is not installed Depends: libasound2:i386 but it is not installed Depends: libgl1:i386 Depends: libxrandr2:i386 but it is not installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. E: Unable to correct dependencies EDIT I have another recent error. You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: crossover:i386 : Depends: libc6:i386 (= 2.3) but it is not installed Depends: libice6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libsm6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libx11-6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libxext6:i386 but it is not installed or xlibs:i386 but it is not installable Depends: libfreetype6:i386 but it is not installed Depends: libz1:i386 Depends: perl5-base:i386 Depends: perl-modules:i386 but it is not installable Depends: python:i386 (= 2.4) but it is not installed Depends: python-gtk2:i386 but it is not installed Depends: python-glade2:i386 but it is not installed Depends: desktop-file-utils:i386 but it is not installed Depends: libasound2:i386 but it is not installed Depends: libgl1:i386 Depends: libxrandr2:i386 but it is not installed E: Unmet dependencies. Try using -f. running " apt-get -f install " gives me the same error everytime.

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• nfs-kernel-server installation : file does not exist

  - by Stuti Rastogi

  I am extremely new to Ubuntu and need to work on EdX platform. I need to install the NFS Client on Ubuntu 12.04 for the same. I used the following stuti@stuti:/$ sudo apt-get install nfs-kernel-server However this gives me an error as follows: Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: nfs-common The following NEW packages will be installed: nfs-common nfs-kernel-server 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/355 kB of archives. After this operation, 1,222 kB of additional disk space will be used. Do you want to continue [Y/n]? y Selecting previously unselected package nfs-common. (Reading database ... 200367 files and directories currently installed.) Unpacking nfs-common (from .../nfs-common_1%3a1.2.5-3ubuntu3.1_i386.deb) ... Selecting previously unselected package nfs-kernel-server. Unpacking nfs-kernel-server (from .../nfs-kernel-server_1%3a1.2.5-3ubuntu3.1_i386.deb) ... Processing triggers for ureadahead ... Processing triggers for man-db ... Setting up nfs-common (1:1.2.5-3ubuntu3.1) ... statd start/running, process 4574 gssd stop/pre-start, process 4603 idmapd start/running, process 4643 Setting up nfs-kernel-server (1:1.2.5-3ubuntu3.1) ... update-rc.d: /etc/init.d/nfs-kernel-server: file does not exist dpkg: error processing nfs-kernel-server (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Errors were encountered while processing: nfs-kernel-server E: Sub-process /usr/bin/dpkg returned an error code (1) I have tried sudo apt-get autoremove nfs-kernel-server sudo apt-get autoremove nfs-common After these, I tried to install but I keep getting the same error. apt-get update or upgrade also do not help and give the same error. I am clueless as to where can I find this missing file as stated in the output. I tried to google about this problem but none of the solutions I came across have helped or I have not been able to understand some of them. Any help would really be appreciated. Thanks in advance for your time and attention.

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• Database design and performance impact

  - by Craige

  I have a database design issue that I'm not quite sure how to approach, nor if the benefits out weigh the costs. I'm hoping some P.SE members can give some feedback on my suggested design, as well as any similar experiences they may have came across. As it goes, I am building an application that has large reporting demands. Speed is an important issue, as there will be peak usages throughout the year. This application/database has a multiple-level, many-to-many relationship. eg object a object b object c object d object b has relationship to object a object c has relationship to object b, a object d has relationship to object c, b, a Theoretically, this could go on for unlimited levels, though logic dictates it could only go so far. My idea here, to speed up reporting, would be to create a syndicate table that acts as a global many-to-many join table. In this table (with the given example), one might see: +----------+-----------+---------+ | child_id | parent_id | type_id | +----------+-----------+---------+ | b | a | 1 | | c | b | 2 | | c | a | 3 | | d | c | 4 | | d | b | 5 | | d | a | 6 | +----------+-----------+---------+ Where a, b, c and d would translate to their respective ID's in their respective tables. So, for ease of reporting all of a which exist on object d, one could query SELECT * FROM `syndicates` ... JOINS TO child and parent tables ... WHERE parent_id=a and type_id=6; rather than having a query with a join to each level up the chain. The Problem This table grows exponentially, and in a given year, could easily grow past 20,000 records for one client. Given multiple clients over multiple years, this table will VERY quickly explode to millions of records and beyond. Now, the database will, in time, be partitioned across multiple servers, but I would like (as most would) to keep the number of servers as low as possible while still offering flexibility. Also writes and updates would be exponentially longer (though possibly not noticeable to the end user) as there would be multiple inserts/updates/scans on this table to keep it in sync. Am I going in the right direction here, or am I way off track. What would you do in a similar situation? This solution seems overly complex, but allows the greatest flexibility and fastest read-operations. Sidenote 1 - This structure allows me to add new levels to the tree easily. Sidenote 2 - The database querying for this database is done through an ORM framework.

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• Distribution upgrade problem "No new release found"

  - by fefe

  I'm using Ubuntu 11.04. The update manager once found the new release 'oneiric', and still shows up this screen when I log on use ssh: Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-14-generic x86_64) * Documentation: https://help.ubuntu.com/ 0 packages can be updated. 0 updates are security updates. New release 'oneiric' available. Run 'do-release-upgrade' to upgrade to it. Last login: Wed Apr 25 16:22:48 2012 from *** But I didn't upgrade then, and change my apt sources. And now I cannot upgrade to 'oneiric'. do-relase-upgrade shows: $ sudo do-release-upgrade Checking for a new ubuntu release No new release found $ And apt-get dist-upgrade shows: $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. $ I can successfully update all my packages. File contents of source.list: $ cat /etc/apt/sources.list ## See sources.list(5) for more information, especialy # Remember that you can only use http, ftp or file URIs deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main universe restricted multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security universe main multiverse restricted deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates universe main multiverse restricted deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports universe main multiverse restricted # deb http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse # deb-src http://ubuntu.dormforce.net/ubuntu/ lucid main universe restricted multiverse # deb http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted # deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-security universe main multiverse restricted # deb http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted # deb-src http://ubuntu.dormforce.net/ubuntu/ lucid-updates universe main multiverse restricted # CDROMs are managed through the apt-cdrom tool. # deb http://archive.canonical.com lucid partner # deb http://archive.canonical.com lucid-security partner # deb http://archive.canonical.com lucid-updates partner # deb-src http://archive.canonical.com lucid partner # deb-src http://archive.canonical.com lucid-security partner # deb-src http://archive.canonical.com lucid-updates partner #medibuntu repo # deb http://packages.medibuntu.org/ lucid free non-free # deb-src http://packages.medibuntu.org/ lucid free non-free # deb http://extras.ubuntu.com/ubuntu maverick main #Third party developers repository deb http://mirrors.sohu.com/ubuntu/ natty main restricted multiverse universe deb-src http://mirrors.sohu.com/ubuntu/ natty main universe restricted multiverse #Added by software-properties deb http://security.ubuntu.com/ubuntu/ natty-security universe main multiverse restricted deb-src http://mirrors.sohu.com/ubuntu/ natty-security universe main multiverse restricted deb http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted deb-src http://mirrors.sohu.com/ubuntu/ natty-updates universe main multiverse restricted File contents of /etc/update-manager/meta-release: $ cat /etc/update-manager/meta-release # default location for the meta-release file [METARELEASE] URI = http://changelogs.ubuntu.com/meta-release URI_LTS = http://changelogs.ubuntu.com/meta-release-lts URI_UNSTABLE_POSTFIX = -development URI_PROPOSED_POSTFIX = -proposed What may be the problem of this?

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• Mysql 5.5 server not working

  - by rajesh

  I had Ubuntu 14.04 installed on my system. I recently updated ubuntu and now my mysql does not start and workbench says that mysql server has been stopped. And when i try to start it gives me the following error 2014-08-12 23:02:04 - Checking server status... 2014-08-12 23:02:04 - Trying to connect to MySQL... 2014-08-12 23:02:04 - Can't connect to MySQL server on '127.0.0.1' (111) (2003) 2014-08-12 23:02:04 - Assuming server is not running 2014-08-12 23:02:04 - Server start done. 2014-08-12 23:02:04 - Checking server status... 2014-08-12 23:02:04 - Trying to connect to MySQL... 2014-08-12 23:02:04 - Can't connect to MySQL server on '127.0.0.1' (111) (2003) 2014-08-12 23:02:04 - Assuming server is not running And also when i try to login using terminal (mysql -u root -p <password>) i get the following error: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) I have also tried to reinstall Ubuntu but i am unable to do so. Gives me the following error: Reading package lists... Done Building dependency tree Reading state information... Done mysql-server-5.5 is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded. I have data which i have not taken backup of as i am unable to log into the server. I am a newbie please help me resolve this issue without losing my data. Awaiting for your earliest response. Below is the error message from cat /var/log/mysql/error.log 140813 21:22:50 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 140813 21:22:50 [Note] Plugin 'FEDERATED' is disabled. 140813 21:22:50 InnoDB: The InnoDB memory heap is disabled 140813 21:22:50 InnoDB: Mutexes and rw_locks use GCC atomic builtins 140813 21:22:50 InnoDB: Compressed tables use zlib 1.2.8 140813 21:22:50 InnoDB: Using Linux native AIO 140813 21:22:50 InnoDB: Initializing buffer pool, size = 128.0M 140813 21:22:50 InnoDB: Completed initialization of buffer pool 140813 21:22:50 InnoDB: highest supported file format is Barracuda. 140813 21:22:50 InnoDB: Waiting for the background threads to start 140813 21:22:51 InnoDB: 5.5.38 started; log sequence number 80726593570 140813 21:22:51 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306 140813 21:22:51 [Note] - '127.0.0.1' resolves to '127.0.0.1'; 140813 21:22:51 [Note] Server socket created on IP: '127.0.0.1'. 140813 21:22:51 [ERROR] Fatal error: Can't open and lock privilege tables: Incorrect file format 'user'

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• How to resolve the "Failed to download repository" error?

  - by jojo

  I've tried to update but then I got this error Here's the error information in that box: W:GPG error: http://extras.ubuntu.com precise Release: The following signatures were invalid: BADSIG 16126D3A3E5C1192 Ubuntu Extras Archive Automatic Signing Key <[email protected]>, W:Failed to fetch http://ppa.launchpad.net/unity-team/hud/ubuntu/dists/precise/main/source/Sources 404 Not Found, W:Failed to fetch http://ppa.launchpad.net/unity-team/hud/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found, E:Some index files failed to download. They have been ignored, or old ones used instead. And my Internet connection is working fine. After trying $ sudo apt-get install ppa-purge Reading package lists... Done Building dependency tree Reading state information... Done ppa-purge is already the newest version. The following packages were automatically installed and are no longer required: language-pack-zh-hans language-pack-kde-en language-pack-kde-zh-hans language-pack-kde-en-base kde-l10n-engb kde-l10n-zhcn language-pack-zh-hans-base firefox-locale-zh-hans language-pack-kde-zh-hans-base Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. $ sudo ppa-purge ppa:unity-team/hud Updating packages lists W: GPG error: http://extras.ubuntu.com precise Release: The following signatures were invalid: BADSIG 16126D3A3E5C1192 Ubuntu Extras Archive Automatic Signing Key <[email protected]> W: Failed to fetch http://ppa.launchpad.net/unity-team/hud/ubuntu/dists/precise/main/source/Sources 404 Not Found W: Failed to fetch http://ppa.launchpad.net/unity-team/hud/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. Warning: apt-get update failed for some reason PPA to be removed: unity-team hud Warning: Could not find package list for PPA: unity-team hud I've tried $ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 16126D3A3E5C1192 Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.v6Ucus0B10 --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 16126D3A3E5C1192 gpg: requesting key 3E5C1192 from hkp server keyserver.ubuntu.com gpg: key 3E5C1192: "Ubuntu Extras Archive Automatic Signing Key <[email protected]>" not changed gpg: Total number processed: 1 gpg: unchanged: 1 And then started the same procedure but of no use.

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• Convert DVDs and ISO Files to MKV with MakeMKV

  - by DigitalGeekery

  Looking for a quick and easy way to convert your DVDs or ISOs to MKV files? Today we take a look at the MakeMKV Beta which gets the job done very well. Installing and Using MakeMKV Download and install MakeMKV (See download link below) If converting a DVD, place it into your optical drive. When you open MakeMKV you will be greeted by it’s minimalistic interface. Click on the DVD to hard drive button to open the DVD, or the folder icon on the top menu to browse for an ISO file.   MakeMKV will open the disc or file. Once the disc or file is opened, you’ll see the titles listed in the window on the left. Double-click on the titles to expand the tree structure.   Remove any title or tracks you don’t want to convert by unselecting the check box to the left. On the right side of the window, click the folder icon to select browse for your file output directory. When ready, click the MakeMkv button to begin the conversion process.   Conversion will proceed.   When the conversion is finished. Click OK. That’s all there is to it! Your MKV file is ready to play. Conclusion MakeMKV is currently still in beta and during the beta phase it will rip both DVD and Blu-ray for free. However, the DVD ripping functionality will always remain free. After 30 days if you want to continue ripping Blu-ray discs, you’ll need to purchase a license. DVD rips are very quick…typically around 15-20 minutes depending on the length of the movie. MakeMKV is available for Windows, Mac, Linux and will rip and convert DVDs to MKV files. Not all media players natively support MKV playback, so if you’re having trouble playing MKV files, try downloading VLC Media player, or the latest version of the DivX codec. Download MakeMKV Similar Articles Productive Geek Tips How To Rip DVDs with VLCEasily Change Audio File Formats with XRECODEHow To Convert Video Files to MP3 with VLCConvert PDF Files to Word Documents and Other FormatsConvert DVD to MP4 / H.264 with HD Decrypter and Handbrake TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Office 2010 Product Guides Google Maps Place marks – Pizza, Guns or Strip Clubs Monitor Applications With Kiwi LocPDF is a Visual PDF Search Tool Download Free iPad Wallpapers at iPad Decor Get Your Delicious Bookmarks In Firefox’s Awesome Bar

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• WNA Configuration in OAM 11g

  - by P Patra

  Pre-Requisite: Kerberos authentication scheme has to exist. This is usually pre-configured OAM authentication scheme. It should have Authentication Level - "2", Challenge Method - "WNA", Challenge Direct URL - "/oam/server" and Authentication Module- "Kerberos". The default authentication scheme name is "KerberosScheme", this name can be changed. The DNS name has to be resolvable on the OAM Server. The DNS name with referrals to AD have to be resolvable on OAM Server. Ensure nslookup work for the referrals. Pre-Install: AD team to produce keytab file on the AD server by running ktpass command. Provide OAM Hostname to AD Team. Receive from AD team the following: Keypass file produced when running the ktpass command ktpass username ktpass password Copy the keytab file to convenient location in OAM install tree and rename the file if desired. For instance where oam-policy.xml file resides. i.e. /fa_gai2_d/idm/admin/domains/idm-admin/IDMDomain/config/fmwconfig/keytab.kt Configure WNA Authentication on OAM Server: Create config file krb.config and set the environment variable to the path to this file: KRB_CONFIG=/fa_gai2_d/idm/admin/domains/idm-admin/IDMDomain/config/fmwconfig/krb.conf The variable KRB_CONFIG has to be set in the profile for the user that OAM java container(i.e. Wbelogic Server) runs as, so that this setting is available to the OAM server. i.e. "applmgr" user. In the krb.conf file specify: [libdefaults] default_realm= NOA.ABC.COM dns_lookup_realm= true dns_lookup_kdc= true ticket_lifetime= 24h forwardable= yes [realms] NOA.ABC.COM={ kdc=hub21.noa.abc.com:88 admin_server=hub21.noa.abc.com:749 default_domain=NOA.ABC.COM [domain_realm] .abc.com=ABC.COM abc.com=ABC.COM .noa.abc.com=NOA.ABC.COM noa.abc.com=NOA.ABC.COM Where hub21.noa.abc.com is load balanced DNS VIP name for AD Server and NOA.ABC.COM is the name of the domain. Create authentication policy to WNA protect the resource( i.e. EBSR12) and choose the "KerberosScheme" as authentication scheme. Login to OAM Console => Policy Configuration Tab => Browse Tab => Shared Components => Application Domains => IAM Suite => Authentication Policies => Create Name: ABC WNA Auth Policy Authentication Scheme: KerberosScheme Failure URL: http://hcm.noa.abc.com/cgi-bin/welcome Edit System Configuration for Kerberos System Configuration Tab => Access Manager Settings => expand Authentication Modules => expand Kerberos Authentication Module => double click on Kerberos Edit "Key Tab File" textbox - put in /fa_gai2_d/idm/admin/domains/idm-admin/IDMDomain/config/fmwconfig/keytab.kt Edit "Principal" textbox - put in HTTP/[email protected] Edit "KRB Config File" textbox - put in /fa-gai2_d/idm/admin/domains/idm-admin/IDMDomain/config/fmwconfig/krb.conf Cilck "Apply" In the script setting environment for the WLS server where OAM is deployed set the variable: KRB_CONFIG=/fa_gai2_d/idm/admin/domains/idm-admin/IDMDomain/config/fmwconfig/krb.conf Re-start OAM server and OAM Server Container( Weblogic Server)

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• Silverlight Cream for November 26, 2011 -- #1175

  - by Dave Campbell

  In this Issue: Michael Washington, Manas Patnaik, Jeff Blankenburg, Doug Mair, Jon Galloway, Richard Bartholomew, Peter Bromberg, Joel Reyes, Zeben Chen, Navneet Gupta, and Cathy Sullivan. Above the Fold: Silverlight: "Using ASP.NET PageMethods With Silverlight" Peter Bromberg WP7: "Leveraging Background Services and Agents in Windows Phone 7 (Mango)" Jon Galloway Metro/WinRT/Windows8: "Debugging Contracts using Windows Simulator" Cathy Sullivan LightSwitch: "LightSwitch: It Is About The Money (It Is Always About The Money)" Michael Washington Shoutouts: Michael Palermo's latest Desert Mountain Developers is up Michael Washington's latest Visual Studio #LightSwitch Daily is up From SilverlightCream.com:LightSwitch: It Is About The Money (It Is Always About The Money)Michael Washington has a very nice post up about LightSwitch apps in general and his opinion about the future use... based on what he and I have been up to, I tend to agree on all counts!Accessing Controls from DataGrid ColumnHeader – SilverlightManas Patnaik's latest post is about using the VisualTreeHelper class to iterate through the visual tree to find the controls you need ... including sample code31 Days of Mango | Day #18: Using Sample DataJeff Blankenburg's Day 18 in his 31-Day Mango quest is on Sample Data using Expression Blend, and he begins with great links to his other Blend posts followed by a nice sample data tutorial and source31 Days of Mango | Day #19: Tilt EffectsDoug Mair returns to the reigns of Jeff's 31-Days series with number 19 which is all about Tilt Effects ... as seen in the Phone application when you select a user... Doug shows how to add this effect to your appLeveraging Background Services and Agents in Windows Phone 7 (Mango)Jon Galloway has a WP7 post up discussing Background Services and how they all fit together... he's got a great diagram of that as an overview then really nice discussion of each followed up by his slides from DevConnections, and codeNetflix on Windows 8This one isn't C#/XAML, but Richard Bartholomew has a Netflix on Windows 8 app running that bears noticeUsing ASP.NET PageMethods With SilverlightPeter Bromberg has a post up demonstrating calling PageMethods from a Silverlight app using the ScriptManager controlAWESOME Windows Phone Power ToolJoel Reyes announced the release of a full-featured tool for side-loading apps to your WP7 device... available at codeplexMicrosoft Windows Simulator Rotation and Resolution EmulationZeben Chen discusses the Windows 8 Simulator a bit deeper with this code-laden post showing how to look at roation and orientation-aware apps and resolution.First look at Windows SimulatorNavneet Gupta has a great into post to using the simulator in VS2011 for Windows 8 apps. Four things you really need this for: Touch Emulation, Rotation, Different target resolutions, and ContractsDebugging Contracts using Windows SimulatorCathy Sullivan shows how to debug W8 Contracts in VS2011... why you ask? because when you hit one in the debugger, the target app disappears.. but enter the simulator... check it outStay in the 'Light!Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCreamJoin me @ SilverlightCream | Phoenix Silverlight User GroupTechnorati Tags:Silverlight    Silverlight 3    Silverlight 4    Windows PhoneMIX10

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• SSIS Expression Editor & Tester

  Published today on CodePlex is the SSIS Expression Editor & Tester project. If you want to try it just pop over to CodePlex and download it. About five years ago I developed my own expression editor control. It first got used in our custom tasks as the MS editor didn’t become available until SQL 2005 SP1, but even then it had some handy features I preferred. For example resizable panes so that if your expression result was more than two lines you could see them all. It also meant I could change the functions available in the tree view, the most obvious use being to add some handy snippets and samples that I used a lot. This quickly developed into a small expression testing tool. I’d develop complex expressions using my editor and then copy it back into the package itself. I have been meaning to make the tool available for some time and finally made the effort, the code is checked-in and the signed downloads are published on CodePlex. There are two flavours, SQL 2005 or 2008, and just a simple zip file to download and extract. The tool doesn’t need installing, and is completely portable. It does need SSIS to be installed on the local machine though. Each zip file contains two files: ExpressionTester.exe – The tool itself, run this. ExpressionEditor.dll – The reusable editor control. A while ago the gentlemen behind BIDS Helper noticed the editor on a task and asked about using it. This became incorporated into their variable window extensions feature. To try and help them and anyone else that wants to use the editor control, it is available as a single assembly that you can reference yourself, and of course all the source code is on CodePlex too. Just add a reference to the ExpressionEditor.dll assembly and you should be up and running in no time. There is a sample project Package Test in the source code which shows how to use the editor control form in it’s simplest form, or if you want to host control directly then the tester tool is a perfect example.

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• How to refactor a Python “god class”?

  - by Zearin

  Problem I’m working on a Python project whose main class is a bit “God Object”. There are so friggin’ many attributes and methods! I want to refactor the class. So Far… For the first step, I want to do something relatively simple; but when I tried the most straightforward approach, it broke some tests and existing examples. Basically, the class has a loooong list of attributes—but I can clearly look over them and think, “These 5 attributes are related…These 8 are also related…and then there’s the rest.” getattr I basically just wanted to group the related attributes into a dict-like helper class. I had a feeling __getattr__ would be ideal for the job. So I moved the attributes to a separate class, and, sure enough, __getattr__ worked its magic perfectly well… At first. But then I tried running one of the examples. The example subclass tries to set one of these attributes directly (at the class level). But since the attribute was no longer “physically located” in the parent class, I got an error saying that the attribute did not exist. @property I then read up about the @property decorator. But then I also read that it creates problems for subclasses that want to do self.x = blah when x is a property of the parent class. Desired Have all client code continue to work using self.whatever, even if the parent’s whatever property is not “physically located” in the class (or instance) itself. Group related attributes into dict-like containers. Reduce the extreme noisiness of the code in the main class. For example, I don’t simply want to change this: larry = 2 curly = 'abcd' moe = self.doh() Into this: larry = something_else('larry') curly = something_else('curly') moe = yet_another_thing.moe() …because that’s still noisy. Although that successfully makes a simply attribute into something that can manage the data, the original had 3 variables and the tweaked version still has 3 variables. However, I would be fine with something like this: stooges = Stooges() And if a lookup for self.larry fails, something would check stooges and see if larry is there. (But it must also work if a subclass tries to do larry = 'blah' at the class level.) Summary Want to replace related groups of attributes in a parent class with a single attribute that stores all the data elsewhere Want to work with existing client code that uses (e.g.) larry = 'blah' at the class level Want to continue to allow subclasses to extend, override, and modify these refactored attributes without knowing anything has changed Is this possible? Or am I barking up the wrong tree?

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• ASP.NET MVC 3 Hosting :: Deploying ASP.NET MVC 3 web application to server where ASP.NET MVC 3 is not installed

  - by mbridge

  You can built sample application on ASP.NET MVC 3 for deploying it to your hosting first. To try it out first put it to web server where ASP.NET MVC 3 installed. In this posting I will tell you what files you need and where you can find them. Here are the files you need to upload to get application running on server where ASP.NET MVC 3 is not installed. Also you can deploying ASP.NET MVC 3 web application to server where ASP.NET MVC 3 is not installed like this example: you can change reference to System.Web.Helpers.dll to be the local one so it is copied to bin folder of your application. First file in this list is my web application dll and you don’t need it to get ASP.NET MVC 3 running. All other files are located at the following folder: C:\Program Files\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\ If there are more files needed in some other scenarios then please leave me a comment here. And… don’t forget to convert the folder in IIS to application. While developing an application locally, this isn’t a problem. But when you are ready to deploy your application to a hosting provider, this might well be a problem if the hoster does not have the ASP.NET MVC assemblies installed in the GAC. Fortunately, ASP.NET MVC is still bin-deployable. If your hosting provider has ASP.NET 3.5 SP1 installed, then you’ll only need to include the MVC DLL. If your hosting provider is still on ASP.NET 3.5, then you’ll need to deploy all three. It turns out that it’s really easy to do so. Also, ASP.NET MVC runs in Medium Trust, so it should work with most hosting providers’ Medium Trust policies. It’s always possible that a hosting provider customizes their Medium Trust policy to be draconian. Deployment is easy when you know what to copy in archive for publishing your web site on ASP.NET MVC 3 or later versions. What I like to do is use the Publish feature of Visual Studio to publish to a local directory and then upload the files to my hosting provider. If your hosting provider supports FTP, you can often skip this intermediate step and publish directly to the FTP site. The first thing I do in preparation is to go to my MVC web application project and expand the References node in the project tree. Select the aforementioned three assemblies and in the Properties dialog, set Copy Local to True. Now just right click on your application and select Publish. This brings up the following Publish wizard Notice that in this example, I selected a local directory. When I hit Publish, all the files needed to deploy my app are available in the directory I chose, including the assemblies that were in the GAC. Another ASP.NET MVC 3 article: - New Features in ASP.NET MVC 3 - ASP.NET MVC 3 First Look

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• Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu

  - by Asian Angel

  Do you have certain folders that you access often each day but are only available through the Places Menu or Nautilus? See how easy it is to create shortcuts for your desktop and taskbar with our quick tutorial. To get started open Nautilus and locate the folders that you want to make new shortcuts for. For our example we chose Ubuntu One. Right click on the chosen folder and select Make Link. Your new shortcut will appear with the text Link to “Folder Name” and an Arrow Shortcut Marker attached. If you are happy with your new shortcut as is, then drag it to your desktop or taskbar as desired. We created the shortcut twice in our example…once for the desktop and once for the taskbar. For our example we decided to customize the taskbar shortcut a bit. To customize your shortcut right click on the shortcut and select Properties. Note: The desktop shortcut is limited on the amount you can customize it (name change and addition of up to four emblems to the folder). From here you can rename the shortcut and change the icon as desired. A quick name change and new icon made a huge improvement in how our taskbar shortcut looked. Note: The link for the icon we used is shown below. A little touch-up to our desktop shortcut and both are looking good. Download the Ubuntu Cloud Icon *Icon is 128*128 pixels and comes in .png format. 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? Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu Create Custom Sized Thumbnail Images with Simple Image Resizer [Cross-Platform] Etch a Circuit Board using a Simple Homemade Mixture 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]

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• Desktop Fun: Happy New Year Wallpaper Collection [Bonus Edition]

  - by Asian Angel

  As this year draws to a close, it is a time to reflect back on what we have done this year and to look forward to the new one. To help commemorate the event we have put together a bonus size edition of Happy New Year wallpapers for your desktops. Extra Note: We made a special effort to find wallpapers for this collection without the year “printed” on them, thus allowing for reuse as desired and/or needed beyond the 2010 – 2011 holiday. Note: Click on the picture to see the full-size image—these wallpapers vary in size so you may need to crop, stretch, or place them on a colored background in order to best match them to your screen’s resolution. For more New Year’s desktop goodness be sure to check out our Happy New Year icon & font packs collection (link at bottom)! Note: This wallpaper will need to be placed on a larger white background in order to increase the height. Note: This wallpaper will need to be placed on a larger background in order to increase the width and height. Note: This wallpaper comes in multiple sizes and will need to be downloaded as a zip file. Note: This wallpaper comes in multiple sizes and will need to be downloaded as a zip file. Note: The download size for the original version of this wallpaper is 15 MB. Note: The download size for the original version of this wallpaper is 15 MB. More Happy New Year Fun Desktop Fun: Happy New Year Icon and Font Packs For more wallpapers be certain to see our great collections in the Desktop Fun section. Latest Features How-To Geek ETC How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Is Your Desktop Printer More Expensive Than Printing Services? 20 OS X Keyboard Shortcuts You Might Not Know HTG Explains: Which Linux File System Should You Choose? HTG Explains: Why Does Photo Paper Improve Print Quality? The Outdoor Lights Scene from National Lampoon’s Christmas Vacation [Video] The Famous Home Alone Pizza Delivery Scene [Classic Video] Chronicles of Narnia: The Voyage of the Dawn Treader Theme for Windows 7 Cardinal and Rabbit Sharing a Tree on a Cold Winter Morning Wallpaper An Alternate Star Wars Christmas Special [Video] Sunset in a Tropical Paradise Wallpaper

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• A big flat text file or a HTML site for language documentation?

  - by Bad Sector

  A project of mine is a small embeddable Tcl-like scripting language, LIL. While i'm mostly making it for my own use, i think it is interesting enough for others to use, so i want it to have a nice (but not very "wordy") documentation. So far i'm using a single flat readme.txt file. It explains the language's syntax, features, standard functions, how to use the C API, etc. Also it is easy to scan and read in almost every environment out there, from basic text-only terminals to full-fledged high-end graphical desktop environments. However, while i tried to keep things nicely formatted (as much as this is possible in plain text), i still think that being a big (and growing) wall of text, it isn't as easy on the eyes as it could be. Also i feel that sometimes i'm not writing as much as i want in order to avoid expanding the text too much. So i thought i could use another project of mine, QuHelp, which is basically a help site generator for sites like this one with a sidebar that provides a tree of topics/subtopics and offline full text search. With this i can use HTML to format the documentation and if i use QuHelp for some other project that uses LIL, i can import LIL's documentation as part of the other project's documentation. However converting the existing documentation to QuHelp/HTML isn't a small task, especially when it comes to functions (i'll need to put more detail on them than what currently exists in the readme.txt file). Also it loses the wide range of availability that it currently has (even if QuHelp's generated code degrades gracefully down to console-only web browsers, plain text is readable from everywhere, including from popular editors such as Vim and Emacs - i had someone once telling me that he likes LIL's documentation because it is readable without leaving his editor). So, my question is simply this: should i keep the documentation as it is now in the form of a single readme.txt file or should i convert it to something like the site i mentioned above? There is also the option to do both, but i'm not sure if i'll be able to always keep them in sync or if it is worth the effort. After asking around in IRC i've got mixed answers: some liked the wide availability of the single text file, others said that it is looks as bad as a man page (personally i don't mind that - i can read man pages just fine - but other people might have issues reading them). What do you think?

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• VirtualBox 4.2.14 is now available

  - by user12611829

  The VirtualBox development team has just released version 4.2.14, and it is now available for download. This is a maintenance release for version 4.2 and contains quite a few fixes. Here is the list from the official Changelog. VMM: another TLB invalidation fix for non-present pages VMM: fixed a performance regression (4.2.8 regression; bug #11674) GUI: fixed a crash on shutdown GUI: prevent stuck keys under certain conditions on Windows hosts (bugs #2613, #6171) VRDP: fixed a rare crash on the guest screen resize VRDP: allow to change VRDP parameters (including enabling/disabling the server) if the VM is paused USB: fixed passing through devices on Mac OS X host to a VM with 2 or more virtual CPUs (bug #7462) USB: fixed hang during isochronous transfer with certain devices (4.1 regression; Windows hosts only; bug #11839) USB: properly handle orphaned URBs (bug #11207) BIOS: fixed function for returning the PCI interrupt routing table (fixes NetWare 6.x guests) BIOS: don't use the ENTER / LEAVE instructions in the BIOS as these don't work in the real mode as set up by certain guests (e.g. Plan 9 and QNX 4) DMI: allow to configure DmiChassisType (bug #11832) Storage: fixed lost writes if iSCSI is used with snapshots and asynchronous I/O (bug #11479) Storage: fixed accessing certain VHDX images created by Windows 8 (bug #11502) Storage: fixed hang when creating a snapshot using Parallels disk images (bug #9617) 3D: seamless + 3D fixes (bug #11723) 3D: version 4.2.12 was not able to read saved states of older versions under certain conditions (bug #11718) Main/Properties: don't create a guest property for non-running VMs if the property does not exist and is about to be removed (bug #11765) Main/Properties: don't forget to make new guest properties persistent after the VM was terminated (bug #11719) Main/Display: don't lose seamless regions during screen resize Main/OVF: don't crash during import if the client forgot to call Appliance::interpret() (bug #10845) Main/OVF: don't create invalid appliances by stripping the file name if the VM name is very long (bug #11814) Main/OVF: don't fail if the appliance contains multiple file references (bug #10689) Main/Metrics: fixed Solaris file descriptor leak Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes VBoxManage: fixed setting the parent UUID on diff images using sethdparentuuid Linux hosts: work around for not crashing as a result of automatic NUMA balancing which was introduced in Linux 3.8 (bug #11610) Windows installer: force the installation of the public certificate in background (i.e. completely prevent user interaction) if the --silent command line option is specified Windows Additions: fixed problems with partial install in the unattended case Windows Additions: fixed display glitch with the Start button in seamless mode for some themes Windows Additions: Seamless mode and auto-resize fixes Windows Additions: fixed trying to to retrieve new auto-logon credentials if current ones were not processed yet Windows Additions installer: added the /with_wddm switch to select the experimental WDDM driver by default Linux Additions: fixed setting own timed out and aborted texts in information label of the lightdm greeter Linux Additions: fixed compilation against Linux 3.2.0 Ubuntu kernels (4.2.12 regression as a side effect of the Debian kernel build fix; bug #11709) X11 Additions: reduced the CPU load of VBoxClient in drag'and'drop mode OS/2 Additions: made the mouse wheel work (bug #6793) Guest Additions: fixed problems copying and pasting between two guests on an X11 host (bug #11792) The full changelog can be found here. You can download binaries for Solaris, Linux, Windows and MacOS hosts at http://www.virtualbox.org/wiki/Downloads Technocrati Tags: Oracle Virtualization VirtualBox

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• Opening cursor files in a graphics editor?

  - by sdaau

  I'm looking at /usr/share/icons/DMZ-White/cursors, and there is: $ tree -s /usr/share/icons/DMZ-White/ /usr/share/icons/DMZ-White/ +-- [ 4096] cursors ¦   +-- [ 14] 00008160000006810000408080010102 -> v_double_arrow ... ¦   +-- [ 5] 9d800788f1b08800ae810202380a0822 -> hand2 ¦   +-- [ 8] arrow -> left_ptr ¦   +-- [ 15776] bd_double_arrow ¦   +-- [ 15776] bottom_left_corner ¦   +-- [ 15776] bottom_right_corner ¦   +-- [ 15776] bottom_side ... ... a bunch of files without extension, that GIMP cannot open. Is there an editor where these files can be opened - or at least a converter to something like .png? I can note that ImageMagick display also failed to open these files... Found also Gursor Maker - Cursor Editor for X11/GTK+; got the CVS code from SourceForge - it still uses Numeric (the old name of numpy), so to run it, you'll have to do: #from Numeric import * from numpy import * ... in xcurio.py, curxp.py, gimp.py, colorfunc.py - and comment the #from xml.dom.ext.reader import Sax2 in lsproj.py. With that, I got it running 11.04: ... but cannot get any files to open? So I thought I should grep for paths, nothing much came up - and when I looked into cursordefs.py, I simply had to paste this: CURSOR_ICON = gtk.gdk.pixbuf_new_from_xpm_data([ "10 16 3 1", " c None", ". c #000000", "+ c #FFFFFF", ".. ", ".+. ", ".++. ", ".+++. ", ".++++. ", ".+++++. ", ".++++++. ", ".+++++++. ", ".++++++++.", ".+++++....", ".++.++. ", ".+. .++. ", ".. .++. ", " .++. ", " .++. ", " .. "]) Heh :) In any case, doesn't look like it will be much usable on newer Ubuntus, unfortunately... Just tested XMC plugin as well - on 11.04, has to be built from source (from the link in the accepted answer); the requirements on my system resolved to: sudo apt-get install libgimp2.0-dev libglib2.0-0-dbg libglib2.0-0-refdbg libglib2.0-cil-dev libgtk2.0-0-dbg libgtk2.0-cil-dev ... after that, the configure/make procedure in the INSTALL file works. Note that this plugin is a bit "sneaky": ... that is, you should use "All files" (as there are no extensions); cursor previews at first will not be rendered. Then open one cursor file; after it has been opened, then there is a preview in the File/Open dialog; but other than that, it works fine...

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• Code Analysis Rule Sets in Visual Studio 2010

  - by Anthony Trudeau

  Microsoft Visual Studio 2010 introduces the concept of rule sets when configuring code analysis.  This is a valuable change from Visual Studio 2008 that I didn't even realize I wanted.  Visual Studio 2008 by default selected all rules and then you had to remove rules on an item by item basis. The rule sets fall into logical groups including "Microsoft All Rules", "Microsoft Basic Correctness Rules", "Microsoft Security Rules", et al.  And within the project properties you can select one rule set, multiple rule sets, or you can define your own rule set based upon another. Selecting a single rule set is obviously the easiest option.  The default rule set when you create a new project is the "Microsoft Minimum Recommended Rules".  However, in my opinion the recommended rules are just too permissive.  For that reason you might want to change your rule set to "Microsoft All Rules" until you get around to creating your own rule set; or alternately you can select multiple rule sets which is an option from the rule set combo box.  The Visual Studio documentation has comprehensive help on what is contained within the rule sets. Creating your own rule set is easy if not obvious.  You need to start a rule set from an existing rule set.  To get started select a rule set in the combo box within the Code Analysis tab of the project properties.  I selected the "Microsoft All Rules" for my rule set, but you may find it easier to start with the "Microsoft Minimum Recommended Rules" if your rules are on the more permissive side. Once your rule set is selected click the Open button.  This will display a dialog that is similar in composition to the rules selection from Visual Studio 2008.  Browsing through the tree view you can select or deselect individual rules within their categories; and you can indicate that the rules are flagged as errors instead of the default which is a warning.  A nice touch to the form is that you get a help pane when you select an individual rule.  That helped me considerably when I first configured my rule set. Once you have finished selecting your rules click the Save tool button, specify a location and name, and click the Save button on the Save As dialog.  Once you're back on the Code Analysis tab you'll choose the Browse option within the combo box and open the file you just created.

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• WPF: Reloading app parts to handle persistence as well as memory management.

  - by Ingó Vals

  I created a app using Microsoft's WPF. It mostly handles data reading and input as well as associating relations between data within specific parameters. As a total beginner I made some bad design decision ( not so much decisions as using the first thing I got to work ) but now understanding WPF better I'm getting the urge to refactor my code with better design principles. I had several problems but I guess each deserves it's own question for clarity. Here I'm asking for proper ways to handle the data itself. In the original I wrapped each row in a object when fetched from database ( using LINQ to SQL ) somewhat like Active Record just not active or persistence (each app instance had it's own data handling part). The app has subunits handling different aspects. However as it was setup it loaded everything when started. This creates several problems, for example often it wouldn't be neccesary to load a part unless we were specifically going to work with that part so I wan't some form of lazy loading. Also there was problem with inner persistance because you might create a new object/row in one aspect and perhaps set relation between it and different object but the new object wouldn't appear until the program was restarted. Persistance between instances of the app won't be huge problem because of the small amount of people using the program. While I could solve this now using dirty tricks I would rather refactor the program and do it elegantly, Now the question is how. I know there are several ways and a few come to mind: 1) Each aspect of the program is it's own UserControl that get's reloaded/instanced everytime you navigate to it. This ensures you only load up the data you need and you get some persistancy. DB server located on same LAN and tables are small so that shouldn't be a big problem. Minor drawback is that you would have to remember the state of each aspect so you wouldn't always start at beginners square. 2) Having a ViewModel type object at the base level of the app with lazy loading and some kind of timeout. I would then propegate this object down the visual tree to ensure every aspect is getting it's data from the same instance 3) Semi active record data layer with static load methods. 4) Some other idea What in your opinion is the most practical way in WPF, what does MVVM assume?

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• Ubuntu Dual Screen Using Virtual Machine - AMD GPU

  - by Chris

  I've been searching online and reading tutorials and etc about how to make my ubuntu VM dual screen(x86_64). I have first tried to run these commands: sudo aticonfig --initial -f which gave me the ouput of: sudo: aitconfig: command not found I then googled the output and followed these instructions that I tells me to install my ATI drivers onto my ubuntu. wget http://www2.ati.com/drivers/linux/ati-driver-installer-11-5-x86.x86_64.run sudo sh ati-driver-installer-11-5-x86.x86_64.run --buildpkg Ubuntu/natty sudo dpkg -i *.deb sudo apt-get -f install sudo aticonfig -f --initial --adapter=all sudo reboot It all works well until I input sudo apt-get -f install which gives me the following output: sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 25 not upgraded. 3 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up fglrx (2:8.850-0ubuntu1) ... update-alternatives: error: alternative link /usr/bin/aticonfig is already managed by x86_64-linux-gnu_gl_conf. dpkg: error processing fglrx (--configure): subprocess installed post-installation script returned error exit status 2 dpkg: dependency problems prevent configuration of fglrx-amdcccle: fglrx-amdcccle depends on fglrx; however: Package fglrx is not configured yet. dpkg: error processing fglrx-amdcccle (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of fglrx-dev: fglrx-dev depends on fglrx; however: Package fglrx is not configured yet. dpkg: error processing fglrx-dev (--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: fglrx fglrx-amdcccle fglrx-dev E: Sub-process /usr/bin/dpkg returned an error code (1) At this point, I don't know what to do since running: gksudo amdcccle For the record, I have 3D acceleration turned on. The following is my GPU for my VM lspci | grep VGA 00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter Any Help on how I can make my VM dual screen with Ubuntu would be great. Thank you in advance.

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• How to build a 4x game?

  - by Marco

  I'm trying to study how succefully implement a 4x game. Area of interest: 1) map data: how to store stellars systems (graphs?), how to generate them and so on.. 2) multiplayer: how to organize code in a non graphical server and a client to display it 3) command system: what are patters to catch user and ai decisions and handle them, adding at first "explore" and "colonize" then "combat", "research", "spy" and so on (commands can affect ships, planets, research, etc..) 4) ai system: ai can use commands to expand, upgrade planets and ship I know is a big questions, so help is appreciated :D 1) Map data Best choice is have a graph to model a galaxy. A node is a stellar system and every system have a list of planets. Ship cannot travel outside of predefined paths, like in Ascendancy: http://www.abandonia.com/files/games/221/Ascendancy_2.png Every connection between two stellar systems have a cost, in turns. Generate a galaxy is only a matter of: - dimension: number of stellar systems, - variety: randomize number of planets and types (desertic, earth, etc..), - positions of each stellar system on game space - connections: assure that exist a path between every node, so graph is "connected" (not sure if this a matematically correct term) 2) Multiplayer Game is organized in turns: player 1, player 2, ai1, ai2. Server take care of all data and clients just diplay it and collect data change. Because is a turn game, latency is not a problem :D 3) Command system I would like to design a hierarchy of commands to take care of this aspect: abstract Genericcommand (target) ExploreCommand (Ship) extends genericcommand colonizeCommand (Ship) buildcommand(planet, object) and so on. In my head all this commands are stored in a queue for every planets, ships or reasearch center or spy, and each turn a command is sent to a server to apply command and change data state 4) ai system I don't have any idea about this. Is a big topic and what I want is a simple ai. Something like "expand and fight against everyone". I think about a behaviour tree to control ai moves, so I can develop an ai that try to build ships to expand and then colonize planets, upgrade them throught science and combat enemies. Could be done with a finite state machine too ? any ideas, resources, article are welcome!

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• LightSwitch Tutorial - Adding Image to a LightSwitch Screen

  - by ChrisD

  Last week, I have discussed how to control Screen Layouts in LightSwitch. Now, I will talk about how to add an image to the LightSwitch screen. In this demo, I will try to upload the image to the screen and will save the image into the database. The first step we need to do is start the VS 2010, create LightSwitch Desktop application with the name “AddingImageIntoScreenInLSBeta2” as shown in the following figure. The second steps, create a table as shown in the screen by selecting the "create a table" option in the start up screen. Then, we need to add a New Data Screen to our demo application. See the following figure which is the default screen layouts for the screen we have created. So we have to change the layout of this screen so that the uploading and using the image in the screen can be easily explained. Before adding the Model Window we have to prepare the layout. So delete the Highlighted fields as shown in the above figure. After preparing the layout to add the image, just add a new Group to the Person Property Rows Layout. To add a new group, [No: 1] – Select the Rows layout, it will shows you the Add button. [No: 2] – Click the Add button to select the new group. [No: 3] – Select the New Group. After adding the new group change the Layout type to Columns Layout. Here, -          Change the rows layout to columns layouts and give the display name as Uploading Image Example. -          Click on the add button to add the Photo field under the column layout. Add a new group under the Column layout group. Follow the [No: #] to create a new group under the columns layout group. After adding a new group of rows layout add the fields to the newly created group. [No: 1] – Select the Rows Layout group and change the display name as Details. [No: 2] – Click on Add button to select the appropriate fields to add to the group. [No: 3] – Add the fields to the group The above snippet shows the complete layout tree for our screen. Now the screen for uploading the image is ready. Just press the Play button. And see the result.

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• How i can fix " E: Internal Error, No file name for libc6 "

  - by SMAOUH

  Hello all please i need your help to fix this problem i have 2 broken packages system and i can't reinstall them or make any other option : update , upgrade , install & remove app .... Ubuntu 12.04.3 I have not found any solutions please help me sudo apt-get install -f smaouh@Linux:~$ sudo apt-get install -f [sudo] password for smaouh: Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libopenal1 libpam-winbind libao-common gnome-exe-thumbnailer libqca2-plugin-ossl gir1.2-champlain-0.12 libmagickcore4 libmagickwand4 libmagickcore4-extra libcapi20-3 python-unidecode libopenal-data liblqr-1-0 gir1.2-gtkchamplain-0.12 unixodbc wine-gecko2.21 libchamplain-0.12-0 python-glade2 imagemagick-common libosmesa6 oss-compat gimp-help-common esound-common gimp-help-en libmpg123-0 ttf-mscorefonts-installer imagemagick winbind libodbc1 fonts-droid fonts-unfonts-core libchamplain-gtk-0.12-0 libclutter-gtk-1.0-0 gir1.2-gtkclutter-1.0 Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 386 not upgraded. 4 not fully installed or removed. After this operation, 0B of additional disk space will be used. dpkg: error processing libc6 (--configure): libc6:amd64 2.15-0ubuntu10.5 cannot be configured because libc6:i386 is in a different version (2.15-0ubuntu10.4) dpkg: dependency problems prevent configuration of libc-dev-bin: libc-dev-bin depends on libc6 (>> 2.15); however: Package libc6 is not configured yet. libc-dev-bin depends on libc6 (<< 2.16); however: Package libc6 is not configured yet. dpkg: error processing libc-dev-bin (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libc6-dev: libc6-dev depends on libc6 (= 2.15-0ubuntu10.5); however: Package libc6 is not configured yet. libc6-dev depends on libc-dev-bin (= 2.15-0ubuntu10.5); however: Package libc-dev-bin is not configured yet. dpkg: error processing libc6-dev (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libc6-i386: libc6-i386 depends on libc6 (= 2.15-0ubuntu10.5); however: Package libc6 is not configured yet. dpkg: error processing libc6-i386 (--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. No apport report written because MaxReports is reached already Errors were encountered while processing: libc6 libc-dev-bin libc6-dev libc6-i386 E: Sub-process /usr/bin/dpkg returned an error code (1) smaouh@Linux:~$

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• Domain Models (PHP)

  - by Calum Bulmer

  I have been programming in PHP for several years and have, in the past, adopted methods of my own to handle data within my applications. I have built my own MVC, in the past, and have a reasonable understanding of OOP within php but I know my implementation needs some serious work. In the past I have used an is-a relationship between a model and a database table. I now know after doing some research that this is not really the best way forward. As far as I understand it I should create models that don't really care about the underlying database (or whatever storage mechanism is to be used) but only care about their actions and their data. From this I have established that I can create models of lets say for example a Person an this person object could have some Children (human children) that are also Person objects held in an array (with addPerson and removePerson methods, accepting a Person object). I could then create a PersonMapper that I could use to get a Person with a specific 'id', or to save a Person. This could then lookup the relationship data in a lookup table and create the associated child objects for the Person that has been requested (if there are any) and likewise save the data in the lookup table on the save command. This is now pushing the limits to my knowledge..... What if I wanted to model a building with different levels and different rooms within those levels? What if I wanted to place some items in those rooms? Would I create a class for building, level, room and item with the following structure. building can have 1 or many level objects held in an array level can have 1 or many room objects held in an array room can have 1 or many item objects held in an array and mappers for each class with higher level mappers using the child mappers to populate the arrays (either on request of the top level object or lazy load on request) This seems to tightly couple the different objects albeit in one direction (ie. a floor does not need to be in a building but a building can have levels) Is this the correct way to go about things? Within the view I am wanting to show a building with an option to select a level and then show the level with an option to select a room etc.. but I may also want to show a tree like structure of items in the building and what level and room they are in. I hope this makes sense. I am just struggling with the concept of nesting objects within each other when the general concept of oop seems to be to separate things. If someone can help it would be really useful. Many thanks

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• PowerShell - grabbing values out of the registry and running them

  - by Rob Farley

  So I closed an application that runs when Windows starts up, but it doesn’t have a Start Menu entry, and I was trying to find it. Ok, I could’ve run regedit.exe, navigated through the tree and found the list of things that run when Windows starts up, but I thought I’d use PowerShell instead. PowerShell presents the registry as if it’s a volume on a disk, and you can navigate around it using commands like cd and dir. It wasn’t hard to find the folder I knew I was after – tab completion (starting the word and then hitting the Tab key) was a friend here. But unfortunately dir doesn’t list values, only subkeys (which look like folders). PS C:\Windows\system32> dir HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run PS C:\Windows\system32> Instead, I needed to use Get-Item to fetch the ‘Run’ key, and use its Property property. This listed the values in there for me, as an array of strings (I could work this out using Get-Member). PS C:\Windows\system32> (Get-Item HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run).Property QuickSet SynTPEnh Zune Launcher PS C:\Windows\system32> Ok, so the thing I wanted wasn’t in there (an app called PureText, whicih lets me Paste As Text using Windows+V). That’s ok – a simple change to use HKCU instead of HKLM (Current User instead of Local Machine), and I found it. Now to fetch the details of the application itself, using the RegistryKey method GetValue PS C:\Windows\system32> (Get-Item HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run).GetValue('PureText') "C:\Users\Rob\Utilities\PureText.exe" PS C:\Windows\system32> And finally, surrounding it in a bit of code to execute that command. That needs an ampersand and the Invoke-Expression cmdlet. PS C:\Windows\system32> '& ' + (Get-Item HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run).GetValue('PureText') | Invoke-Expression A simple bit of exploring PowerShell which will makes for a much easier way of finding and running those apps which start with Windows.

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