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• Upgraded from 11.4 to 11.10, There was an error, now the system won't initiialize

  - by Eric

  This morning the system gave me a message that my Version (11.4) was no longer supported, and I took the 'upgrade' option (- 11.10). While installing the various components I encountered a message to the effect that the there was an error and the system may have become unusable. Among the messges: E:Sup-process /usr/bin/dpkg received a segmentation fault...returned an error code (1). I was given an option to do several things, one of which seemed to mean that it would attempt to roll back to the previous version (the default), which I took. After the process ran it said the upgrade process had finished, but there were errors. I attempted to initialize a console so I could enter ubuntu-bug update-manager /var/log/dist-upgrade, per the instructions I received when I received the error message, but the console failed during initialization. I restarted the machine, and the screen has stopped with the following contents: * Starting bluetooth * Stopping save kernel messages * Starting CUPS printing spooler/server * PulseAudio configured per-user sessions saned disabled: edit /etc/default/saned $starting up Cisco VPN daemon *Starting anac(h)ronistic cron *Stopping anac(h)ronistic cron Each of these steps followed by [ OK ] What are my options? Any help appreciated!

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• How can I install from a 9.04 live USB/DVD?

  - by bstpierre

  I have a 9.04 (Jaunty) ISO burned to a USB stick; it appears to be a "live DVD". When I boot from it, I get a GRUB menu listing: Ubuntu, with Linux 2.6.35-generic (This matches the system currently installed on the HDD?) Ubuntu, with Linux 2.6.35-generic (recovery mode) Memory test Ubuntu 9.04, kernel 2.6.28-11-generic (on /dev/sda1) Ubuntu 9.04, kernel 2.6.28-11-generic (recovery mode) (on /dev/sda1) Ubuntu 9.04, memtest86+ (on /dev/sda1) When I select Ubuntu 9.04, kernel 2.6.28-11-generic (on /dev/sda1), I arrive at the desktop of a 9.04 system. I want to wipe the HDD clean and install 9.04. (Upgrading to something newer is not an option; this version is required by a legacy application.) How can I install from this live USB image? I vaguely remember some incantation that I should be able to use in the booted system, but my google-fu is broken at the moment. I'm comfortable with low-level commands, so if you want to recommend a more hard-core strategy, I'm willing to roll with it without requiring a ton of detail...

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• How to educate business managers on the complexity of adding new features? [duplicate]

  - by Derrick Miller

  This question already has an answer here: How to educate business managers on the complexity of adding new features? [duplicate] 3 answers We maintain a web application for a client who demands that new features be added at a breakneck pace. We've done our best to keep up with their demands, and as a result the code base has grown exponentially. There are now so many modules, subsystems, controllers, class libraries, unit tests, APIs, etc. that it's starting to take more time to work through all of the complexity each time we add a new feature. We've also had to pull additional people in on the project to take over things like QA and staging, so the lead developers can focus on developing. Unfortunately, the client is becoming angry that the cost for each new feature is going up. They seem to expect that we can add new features ad infinitum and the cost of each feature will remain linear. I have repeatedly tried to explain to them that it doesn't work that way - that the code base expands in a fractal manner as all these features are added. I've explained that the best way to keep the cost down is to be judicious about which new features are really needed. But, they either don't understand, or they think I'm bullshitting them. They just sort of roll their eyes and get angry. They're all completely non-technical, and have no idea what does into writing software. Is there a way that I can explain this using business language, that might help them understand better? Are there any visualizations out there, that illustrate the growth of a code base over time? Any other suggestions on dealing with this client?

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• Broadcom 4313 doesn't work following 12.04 upgrade

  - by Lucas

  I have an hp G62-228Ca laptop with a BCM4313 previously running Ubuntu 11.10. I ran the 12.04 upgrade last night without much thought. Following the upgrade and mandatory reboot, the wireless card no longer shows up in the network manager, the first time I've had any kind of issues with wireless under Ubuntu. I've done much Googling on the issue but so far I haven't found a permanent solution. Mucking around with some packages though (I've installed five different ones or so), I've managed to devise a workaround that I must run every time I boot the laptop. I have to remove the Broadcom STA driver and reinstall it. Inspiration taken from here: WiFi does not work, Broadcom STA Wireless driver does not work on a BCM4313 After the second modprobe command, the wireless reappears in the network manager and ten seconds after that I'm back on the wifi. If anyone can provide some advice on how to fix this permanently I will be extremely grateful. I'd rather not roll back to 11.10 or reinstall, but I will if I need to. Just let me know if you need the output from any terminal commands. Thanks in advance!

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• Draw "vision cone" / targetting element onto game world

  - by gkimsey

  I'm wanting to indicate various things using a "pie slice" sort of shape as below. Similar to vision cones in stealth game minimaps, or targetting indicators in RTS type games for frontal area attacks. Something generic enough to be used for both would be ideal. I need to be able to procedurally (and efficiently) change things like the slice width and length, color, transparency, position in the world, etc. For my particular situation, there's no concern with elevation, funky terrain, or really any third axis at all as far as this element is concerned. I have two first inclinations on how to accomplish this: 1) Manually generate the vertices for a main triangle, (possibly two, superimposed to get the border effect), a handful more to approximate the arc at the end, and roll it into a mesh. 2) Use some sort of 2D drawing library to create a circle and mask it off at the right angles, render to texture, and use that. For reference, I have some experience with Ogre3D, but I'm not attached to it as this is a mostly academic pursuit at the moment. Other technologies that might be better at accomplishing this are more than welcome. Finally, I'm kind of curious about how to do a "flashlight" or similar 3D effect that could produce the same result, but on all surfaces in the lit area.

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• Simple (and fast) dices physics

  - by Markus von Broady

  I'm programming a throw of 5 dices in Actionscript 3 + AwayPhysics (BulletPhysics port). I had a lot of fun tweaking frictions, masses etc. and in the end I found best results with more physics ticks per frame. Currently I use 10 ticks per frame (1/60 s) and it's OK, though I see a difference in plus for 20 ticks. Even though it's only 5 cubes (dices) in a box (or a floor with 3 walls really) I can't simulate 20 ticks in a frame and keep FPS at 60 on a medium-aged PC. That's why I decided to precompute frames for animation, finishing it in around 1700 ticks in 2 seconds. The flash player is freezed for these 2 seconds, and I'm afraid that this result will be more of a 5 seconds or even more, if I'll simulate multi-threading and compute frames in background of some other heavy processes and CPU drawing (dices is only a part of this game). Because I want both players to see dices roll in same way, I can't compute physics when having free resources, and build a buffer for at least one throw of each type (where type is number of dices thrown). I'm afraid players will see a "preparing dices........." message too often and for too long. I think the only solution to this problem is replacing PhysicsEngine with something simpler, or creating own physicsEngine. Do You have any formulas for cube-cube and cube-wall collision detection, and for calculating how their angular and linear velocities should change after a collision occurs?

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• Is there an open source version check library and web app?

  - by user52485

  I'm a developer for a cross platform (Win, MacOS, Linux) open source C++ application. I would like to have the program occasionally check for the latest version from our web site. Between the security, privacy, and cross platform network issues, I'd rather not roll our own solution. It seems like this is a common enough thing that there 'ought' to be a library/app which will do this. Unfortunately, the searches I've tried come up empty. Ideally, the web app would track requests and process the logs into some nice reports (number of users, what version, what platform, frequency of use, maybe even geographical info from IP address, etc.). While appropriately respecting privacy, etc. What pre-existing tools can help solve this problem? Edits: I am looking for a reporting tool, not a dependency checker. Our project has the challenge of keeping up with our users. Most do not join the mailing list. Our project has not been picked up by major distributions -- most of our users are Windows/MacOS anyway. When a new version comes out, we have no way of informing our users of its existence. Development is moving pretty fast, major features added every few months. We would like to provide the user with a way to check for an updated version. While we're at it, we would like to use these requests for some simple & anonymous usage tracking (X users running version Y with Z frequency, etc.). We do not need/want something that auto-updates or tracks dependencies on the system. We are not currently worried about update size -- when the user chooses to update, we expect them to download the complete latest version. We would like to keep this as simple as possible.

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• moving in the wrong direction

  - by Will

  Solution: To move a unit forward: forward = Quaternion(0,0,0,1) rotation.normalize() # ocassionally ... pos += ((rotation * forward) * rotation.conjugated()).xyz().normalized() * speed I think the trouble stemmed from how the Euclid math library was doing Quaternion*Vector3 multiplication, although I can't see it. I have a vec3 position, a quaternion for rotation and a speed. I compute the player position like this: rot *= Quaternion().rotate_euler(0.,roll_speed,pitch_speed) rot.normalize() pos += rot.conjugated() * Vector3(0.,0.,-speed) However, printing the pos to console, I can see that I only ever seem to travel on the x-axis. When I draw the scene using the rot quaternion to rotate my camera, it shows a proper orientation. What am I doing wrong? Here's an example: You start off with rotation being an identity quaternion: w=1,x=0,y=0,z=0 You move forward; the code correctly decrements the Z You then pitch right over to face the other way; if you spin only 175deg it'll go in right direction; you have to spin past 180deg. It doesn't matter which direction you spin in, up or down, though Your quaternion can then be something like: w=0.1,x=0.1,y=0,z=0 And moving forward, you actually move backward?! (I am using the euclid Python module, but its the same as every other conjulate) The code can be tried online at http://williame.github.com/ludum_dare_24_evolution/ The only key that adjusts the speed is W and S. The arrow keys only adjust the pitch/roll. At first you can fly ok, but after a bit of weaving around you end up getting sucked towards one of the sides. The code is https://github.com/williame/ludum_dare_24_evolution/blob/cbacf61a7159d2c83a2187af5f2015b2dde28687/tiny1web.py#L102

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• How to undelete files in TFS

  - by Tarun Arora

  Have you accidently deleted files from TFS and are looking at a way to undelete the file? You don’t have to undo your previous check in to get the files back, there is a simpler way. 01 – View Deleted items in Team Explorer Have you been wondering how you can view deleted items in Team Explorer? Well, go to tools, options, Source Control. From Visual Studio Team Foundation check ‘show deleted items in the Source Control Explorer’.  02 – Undelete files from TFS Simply right click the deleted file or folder and from the context menu select ‘Undelete’. This will roll back the files to the version before the delete operation was committed on them.  The undeleted changes now show up as pending changes in your workspace. You need to right click the folder and select Check In Pending changes from the context menu to restore the files. Add a comment and check in the files back to TFS to undelete them Right click the folder and view history. You’ll see both the check in that deleted the file/folder and the check in that restored it. So, that’s how you can restoring deleted files in TFS… Nice and simple… Right?

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• How to fix legacy code that uses <string.h> unsafely?

  - by Snowbody

  We've got a bunch of legacy code, written in straight C (some of which is K&R!), which for many, many years has been compiled using Visual C 6.0 (circa 1998) on an XP machine. We realize this is unsustainable, and we're trying to move it to a modern compiler. Political issues have said that the most recent compiler allowed is VC++ 2005. When compiling the project, there are many warnings about the unsafe string manipulation functions used (sprintf(), strcpy(), etc). Reviewing some of these places shows that the code is indeed unsafe; it does not check for buffer overflows. The compiler warning recommends that we move to using sprintf_s(), strcpy_s(), etc. However, these are Microsoft-created (and proprietary) functions and aren't available on (say) gcc (although we're primarily a Windows shop we do have some clients on various flavors of *NIX) How ought we to proceed? I don't want to roll our own string libraries. I only want to go over the code once. I'd rather not switch to C++ if we can help it.

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• CodePlex Daily Summary for Saturday, August 18, 2012

  CodePlex Daily Summary for Saturday, August 18, 2012Popular ReleasesExtAspNet: ExtAspNet v3.1.9: +2012-08-18 v3.1.9 -??other/addtab.aspx???JS???BoundField??Tooltip???（Dennis_Liu）。 +??Window?GetShowReference???????????????（︶????、????、???、??~）。 -?????JavaScript?????，??????HTML????????。 -??HtmlNodeBuilder????????????????JavaScript??。 -??????WindowField、LinkButton、HyperLink????????????????????????????。 -???????????grid/griddynamiccolumns2.aspx（?????）。 -?????Type??Reset?????，??????????????????（e??）。 -?????????????????????。 -?????????int,short,double??????????（???）。 +?Window????Ge...XDA ROM HUB: Release v0.9.3: ChangelogAdded a new UI Removed unnecessary features Fixed a lot of bugs Adding new firmwares (Please help me) Added a new app for Android Ability to backup apps to the SD Card Ability to create Nandroid backups without a PC Ability to backup apps and restore from CWM Improved download manager Now supporting pause and resume Converting Bytes to MegaBytes Improved dialogs Removed support for 7z files Changed installer Known BugsDialog message will always appear when clic...Task Card Creator 2010: TaskCardCreator2010 4.0.2.0: What's New: UI/UX improved using a contextual ribbon tab for reports Finishing the "new 4.0 UI" Report template help improved New project branch to support TFS 2012: http://taskcardcreator2012.codeplex.com User interface made more modern (4.0.1.0) Smarter algorithm used for report generation (4.0.1.0) Quality setting added (4.0.1.0) Terms harmonized (4.0.1.0) Miscellaneous optimizations (4.0.1.0) Fixed critical issue introduced in 4.0.0.0 (4.0.1.0)AcDown????? - AcDown Downloader Framework: AcDown????? v4.0.1: ?? ●AcDown??????????、??、??????。????，????，?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????，??????、????????????????。 ● AcDown??????????????????，????????????????????????????。 ● AcDown???????C#??，????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ??：????????Windows XP???,?????????.NET Framework 2.0???(x86)，?????"?????????"??? ??????????????，??????????： ??"AcDown?????"????????? ...Fluent Validation for .NET: 3.4: Changes since 3.3: Make ValidationResut.IsValid virtual Add private no-arg ctor to ValidationFailure to help with serialization Add Turkish error messages Work-around for reflection bug in .NET 4.5 that caused VerificationExceptions Assemblies are now unsigned to ease with versioning/upgrades (especially where other frameworks depend on FV) (Note if you need signed assemblies then you can use the following NuGet packages: FluentValidation-signed, FluentValidation.MVC3-signed, FluentV...fastJSON: v2.0.2: - bug fix $types and arraysAssaultCube Reloaded: 2.5.3 Unnamed Fixed: If you are using deltas, download 2.5.2 first, then overwrite with the delta packages. Linux has Ubuntu 11.10 32-bit precompiled binaries and Ubuntu 10.10 64-bit precompiled binaries, but you can compile your own as it also contains the source. If you are using Mac or other operating systems, please wait while we try to package for those OSes. Try to compile it. If it fails, download a virtual machine. The server pack is ready for both Windows and Linux, but you might need to compile your ...Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.6.1: Bug Fix release Bug Fixes Better support for transparent images IsFrozen respected if not bound to corrected deadlock stateWPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.7: Version: 2.5.0.7 (Milestone 7): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete WAF: Add CollectionHelper.GetNextElementOrDefault method. InfoMan: Support creating a new email and saving it in the Send b...Diablo III Drop Statistics Service: D3DSS 1.0.1: ??????IP??。 ??????????，??????????。myCollections: Version 2.2.3.0: New in this version : Added setup package. Added Amazon Spain for Apps, Books, Games, Movie, Music, Nds and Tvshow. Added TVDB Spain for Tvshow. Added TMDB Spain for Movies. Added Auto rename files from title. Added more filters when adding files (vob,mpls,ifo...) Improve Books author and Music Artist Credits. Rewrite find duplicates for better performance. You can now add Custom link to items. You can now add type directly from the type list using right mouse button. Bug ...Player Framework by Microsoft: Player Framework for Windows 8 Preview 5 (Refresh): Support for Windows 8 and Visual Studio RTM Support for Smooth Streaming SDK beta 2 Support for live playback New bitrate meter and SD/HD indicators Auto smooth streaming track restriction for snapped mode to conserve bandwidth New "Go Live" button and SeekToLive API Support for offset start times Support for Live position unique from end time Support for multiple audio streams (smooth and progressive content) Improved intellisense in JS version NEW TO PREVIEW 5 REFRESH:Req...TFS Workbench: TFS Workbench v2.2.0.10: Compiled installers for TFS Workbench 2.2.0.10 Bug Fix Fixed bug that stopped the change workspace action from working.Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.60: Allow for CSS3 grid-column and grid-row repeat syntax. Provide option for -analyze scope-report output to be in XML for easier programmatic processing; also allow for report to be saved to a separate output file.ClosedXML - The easy way to OpenXML: ClosedXML 0.67.2: v0.67.2 Fix when copying conditional formats with relative formulas v0.67.1 Misc fixes to the conditional formats v0.67.0 Conditional formats now accept formulas. Major performance improvement when opening files with merged ranges. Misc fixes.Umbraco CMS: Umbraco 4.8.1: Whats newBug fixes: Fixed: When upgrading to 4.8.0, the database upgrade didn't run Update: unfortunately, upgrading with SQLCE is problematic, there's a workaround here: http://bit.ly/TEmMJN The changes to the <imaging> section in umbracoSettings.config caused errors when you didn't apply them during the upgrade. Defaults will now be used if any keys are missing Scheduled unpublishes now only unpublishes nodes set to published rather than newest Work item: 30937 - Fixed problem with Fi...patterns & practices - Unity: Unity 3.0 for .NET 4.5 and WinRT - Preview: The Unity 3.0.1208.0 Preview enables Unity to work on .NET 4.5 with both the WinRT and desktop profiles. This is an updated version of the port after the .NET Framework 4.5 and Windows 8 have RTM'ed. Please see the Release Notes Providing feedback Post your feedback on the Unity forum Submit and vote on new features for Unity on our Uservoice site.Self-Tracking Entity Generator for WPF and Silverlight: Self-Tracking Entity Generator v 2.0.0 for VS11: Self-Tracking Entity Generator for WPF and Silverlight v 2.0.0 for Entity Framework 5.0 and Visual Studio 2012NPOI: NPOI 2.0: New features a. Implement OpenXml4Net (same as System.Packaging from Microsoft). It supports both .NET 2.0 and .NET 4.0 b. Excel 2007 read/write library (NPOI.XSSF) c. Word 2007 read/write library(NPOI.XWPF) d. NPOI.SS namespace becomes the interface shared between XSSF and HSSF e. Load xlsx template and save as new xlsx file (partially supported) f. Diagonal line in cell both in xls and xlsx g. Support isRightToLeft and setRightToLeft on the common spreadsheet Sheet interface, as per existin...BugNET Issue Tracker: BugNET 1.1: This release includes bug fixes from the 1.0 release for email notifications, RSS feeds, and several other issues. Please see the change log for a full list of changes. http://support.bugnetproject.com/Projects/ReleaseNotes.aspx?pid=1&m=76 Upgrade Notes The following changes to the web.config in the profile section have occurred: Removed <add name="NotificationTypes" type="String" defaultValue="Email" customProviderData="NotificationTypes;nvarchar;255" />Added <add name="ReceiveEmailNotifi...New Projectscocos2d simpledemo: simple demo cocos2dDiscuzViet: Discuz Vi?t Nam - discuz.vnEaseSettings: EaseSettings is a library designed to allow easy usage of settings with a highly structured in treenode-form.Face Detection & Recognition: Face Detection & Recognition project. It provide an interface for face detection and recognition FIM 2010 GoogleApps MA: Forefront Identity Manager 2010 Management Agent for Google Apps. You can synchronize users between Google Apps and Forefront Identity Manager 2010.Get System Info: Get System Information is an open source project licensed under the GNU Public License v2. This project allows you to view information about your system.go launcher: Go launchergrOOvy language (the spec): A formal specification of what the Groovy Language does.JavaScript Prototype Extension: It is a standalone JavaScript extension based on JavaScript prototype directly, to make developers use JS like C# or Java.Jump N Roll Windows Phone 7: Jump n Roll is a remake of the classic amiga game for windows phone 7, using vb.net and XNA. Version 1 is in a working but unfinished state.KingOfHorses: This is a Capstone Project from FPT University.Lan House Manager: Trabalho de conclusão de curso da faculdade de Ciências da Computação 2009 UNISANTA. -.NET -C# -WPF -ASP.NET MVC -Entity Framework -SQL ServerMy source code: This project contains my source code.MySimpleProjectForKudu: Cool stuffNWP INTRANET: NWP Intranet, a complete and useful intranet application for a wide cainds of companies.P.O.W. - PowerShell on the Web - DevOps Automation Portal: The PowerShell DevOps Portal provides a SharePoint like experience but centralized around the execution of PowerShell scripts to automate DevOps oriented tasks.Piwik for Microsoft Silverlight Analytics Framework: Piwik for Micorsoft Silverlight Analytics adds Piwik support to the MSAFPlaygroundSite: pluralsight tutSkewboid Approach to Pareto Relaxation and Filtering: For multi-objective decision-making and optimization - an adjustment parameter, alpha, is added to the conventional determination of Pareto optimality.Software Factories: Software Factory Generatorsspaceship cocos2dx demo: testing onlySpring_DWR: Present day I had a requirement where using Spring and Direct web remoting. testgit08172012git01: yuitesttom08172012tfs01: ytryytrtouchdragdemo: touch drag demoVirtual Pilot Client: An open-source pilot client for the VATSIM network. See discussions at http://forums.vatsim.net/viewforum.php?f=124 Visual Studio IDE Service - DTE: Visual Studio ServicesWCF AOP Sample: This project contains a simple implementation of AOP for WCF. It illustrates how to do simple logging and param masking using basic WCF extensions and Unity.WeatherApp: Aplicación para ver el clima????: ??????????，????

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• Extra blank page when converting HTML to PDF using abcPDF.

  - by ProfK

  I have an HTML report, with each print page contained by a <div class="page">. The page class is defined as width: 180mm; height: 250mm; page-break-after: always; background-position: centre top; background-image: url(Images/MainBanner.png); background-repeat: no-repeat; padding-top: 30mm; After making a few changes to my report content, when I call abcPDF to convert the report to PDF, suddenly I'm getting a blank page inserted after every real report page. I don't want to roll back the changes I've just made to remove this problem, so I'm hoping someone may know why the extra pages are being inserted.

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• How to create a JQuery Clock / Timer

  - by Ganesh Shankar

  I have a simple quiz application and I want display a nice timer / clock at the top of the page which shows the user how long they've been going for. (If I could somehow show them a timer for Total Quiz Time and also a second one for This Question Time that would be even cooler but I should be able to figure out how to do myself that once I've got one timer working. My question is: What's a nice, easy way to show a simple timer / clock using JQuery? (straight JS is also ok) I know how to check time, but how do I get incrementing seconds? My own searches keep leading me to JQuery plugins (I want to roll my own) and also "event timers" which are not what I'm looking for...

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• java annotations: library to override annotations with xml files

  - by flybywire

  Java has annotations and that is good. However, some developers feel that it is best to annotate code with metadata using xml files - others prefer annotations but would use metadata to override annotations in source code. I am writing a Java framework that uses annotations. The question is: is there a standard way to define and parse metadata from xml files. I think this is something every framework that uses annotations could benefit from but I can seem to find something like this on the Internet. Must I roll my own xml parsing/validation or has someone already done something like this?

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• FormsAuthentication.SignOut() does not log the user out.

  - by Jason

  Smashed my head against this a bit too long. How do I prevent a user from browsing a site's pages after they have been logged out using FormsAuthentication.SignOut? I would expect this to do it: FormsAuthentication.SignOut(); Session.Abandon(); FormsAuthentication.RedirectToLoginPage(); But it doesn't. If I type in a URL directly, I can still browse to the page. I haven't used roll-your-own security in a while so I forget why this doesn't work.

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• Recommendation for high performance WPF Chart

  - by Ajaxx

  We're working on a WPF-based desktop application that charts financial markets information (candlestick charts, overlayed indicator curves, volume, etc). The charts are displayed in real-time with responses to market ticks being shown in real-time (updating one to two times per second is probably a reasonable display refresh policy). We've been looking for a software package (commercial is fine by us) that has the capability of displaying these charts. Additionally, we'd like to have an approach that can render the initial amount of data in a reasonable timeframe (give or take 100-200ms from the time we hand the data over to a complete render on screen). Also we view multiple charts (5-10) simultaneously so a solution that chews up 50% of my CPU to display one chart really isn't going to work well. Has anyone had any good experiences with charting controls. We've had to hand roll the last few charts we've done and I'd prefer not to do it again. Solutions that can make use of the GPU to minimize CPU utilization would be nice as well.

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• Rules engine for Silverlight?

  - by frances1983

  At the moment I'm developing a web based application using Silverlight 3.0. For the business rules I'm looking for a rules engine that's both easy to use for me and my users, which will work with SL3. Is something like that available out of the box or will I need to roll my own? I've Googled and looked around the various code sites (Codeplex, Code Project etc), but didn't see anything that suits my needs. I did also have a good long look at NxBRE, but it's Rules syntax is too complex for 'dummy' users.

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• Resources for rails widget creation

  - by Kenji Crosland

  My rails app is about to go live and I'm trying to figure out how to create a widget based on data on the site. My Javascript is not too hot--limited to the O'reilly head first book on JS. I can read simple Javascript okay but when it comes to writing it I'm a little lost. That said, I hope to roll out a widget, maybe a wordpress plugin too soon after my app is launched. Does anyone know of any rails plugins, javascript templates, tutorials or books that can get me going? I did ask a similar question before here: But my limited knowledge of JS kept me from implementing the suggested answer properly.

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• How can I stop the flickering in Scriptaculous?

  - by Richard Testani

  I'm running this script on a page which shows a box with more information when you roll over it. site for review The script works fine, except theres a flicker of the box before it actually scales. What is causing this? I use the same thing in the main navigation with the same flicking. Any ideas whats causing this? //work page springing box $$('.box').each(function(s) { var more = $(s).down(2); $(s).observe('mouseenter', function(e) { $(more).show(); new Effect.Scale(more, 100, { scaleX: false, scaleY: true, scaleContent: false, scaleFrom: 1, mode: 'absolute', duration: 0.5 }); }); $(s).observe('mouseleave', function(e) { new Effect.Fade(more, { duration: 0.2 }) }); }); Thanks. Rich

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• What does transaction.commit() do when the flushmode is set manual in Hibernate?

  - by wei

  Here is a block of code in the Java Persistence with Hibernate book by Christian and Gavin, Session session = getSessionFactory().openSession(); session.setFlushMode(FlushMode.MANUAL); // First step in the conversation session.beginTransaction(); Item item = (Item) session.get(Item.class, new Long(123) ); session.getTransaction().commit(); // Second step in the conversation session.beginTransaction(); Item newItem = new Item(); Long newId = (Long) session.save(newItem); // Triggers INSERT! session.getTransaction().commit(); // Roll back the conversation! session.close();//enter code here I am confused that why the first step and second step need to be wrapped into two separate transactions? Since the flushmode is set manual here, no operations (suppose we ignore the insert here) will hit the database anyway. So why bother with transactions here? thanks

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• Graphing new users by date in a Rails app using Seer

  - by Danger Angell

  I'd like to implement a rolling graph showing new users by day over the last 7 days using Seer. I've got Seer installed: http://www.idolhands.com/ruby-on-rails/gems-plugins-and-engines/graphing-for-ruby-on-rails-with-seer I'm struggling to get my brain around how to implement. I've got an array of the Users I want to plot: @users = User.all( :conditions = {:created_at = 7.days.ago..Time.zone.now}) Can't see the right way to implement the :data_method to roll them up by created_at date. Anyone done this or similar with Seer? Anyone smarter than me able to explain this after looking at the Seer sample page (linked above)?

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• Best method for Flex to PHP communication?

  - by davr

  What is the best method for communication between Flex and PHP? In the past, we used AMFPHP with AS2, and it worked great for the most part (advantage of AMFPHP is that it also has a JSON mode that can let you seamlessly use the same remote PHP with either Javascript or Actionscript frontends). However, it seems like AMFPHP isn't realy maintained anymore. So what do people recommend to replace it? So far, what I've found is: Zend_AMF (looks too complex for us, we're not using the Zend framework otherwise) AMFPHP (there were some updated made to support Flex, and it seems fairly stable, but not sure on long-term support) XML (AS3 has nice XML handling routines, but it's more of a pain on the PHP side) WebORB (I have no experience with this) Roll-our-own using JSON or some other data-to-text serialization system (php's serialize(), XML, etc etc) Mostly I'm leaning towards AMFPHP, even because of the downsides, since that's what I'm used to. Any reason I should consider switching to something else?

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• Lucene.Net support phrases?: What is best approach to tokenize comma-delimited data (atomically) in

  - by Pete Alvin

  I have a database with a column I wish to index that has comma-delimited names, e.g., User.FullNameList = "Helen Ready, Phil Collins, Brad Paisley" I prefer to tokenize each name atomically (name as a whole searchable entity). What is the best approach for this? Did I miss a simple option to set the tokenize delimiter? Do I have to subclass or write my own class that to roll my own tokenizer? Something else? ;) Or does Lucene.net not support phrases? Or is it smart enough to handle this use case automatically? I'm sure I'm not the first person to have to do this. Googling produced no noticeable solutions.

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• Long-running transactions structured approach

  - by disown

  I'm looking for a structured approach to long-running (hours or more) transactions. As mentioned here, these type of interactions are usually handled by optimistic locking and manual merge strategies. It would be very handy to have some more structured approach to this type of problem using standard transactions. Various long-running interactions such as user registration, order confirmation etc. all have transaction-like semantics, and it is both error-prone and tedious to invent your own fragile manual roll-back and/or time-out/clean-up strategies. Taking a RDBMS as an example, I realize that it would be a major performance cost associated with keeping all the transactions open. As an alternative, I could imagine having a database supporting two isolation levels/strategies simultaneously, one for short-running and one for long-running conversations. Long-running conversations could then for instance have more strict limitations on data access to facilitate them taking more time (read-only semantics on some data, optimistic locking semantics etc). Are there any solutions which could do something similar?

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• Spring Security - is Role and ACL security overkill?

  - by HDave

  I have a 3 tier application that requires security authorizations be placed on various domain objects. Whether I use Spring's ACL implementation or roll my own, it seems to me that ACL based security can only be used to authorize (service) methods and cannot be used to authorize URL or web service invocations. I think this because how could a web service call check the ACL before it has hydrated the XML payload? Also, all the examples for web access security in the Spring documentation are securing URL's based on Role. Is it typical to use Spring's roles to secure web presentation and web service calls, while at the same time using ACL's to secure the business methods? Is this overkill?

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