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• "Unable to create OpenGL 3.3 context (flags 0, profile 1)"

  - by Tsvetan

  Trying to run any of the well-known McKesson's tutorials on a friend's laptop results in the aforementioned exception. I read that in order to run applications which use OpenGL 3.3 you must at least have an ATI HD or Nvidia 8xxx GPU series. He has an ATI HD class graphics processor which eliminates (maybe) this issue. Also, I read that this error may result in having old drivers. He updated his drivers but that didn't solve the problem. The tutorials are built as said in the book introduction and glsdk is installed. If more information is needed, say so and I will provide it. What are the other reasons for this kind of exception? And how can I fix them?

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• Designing Web Service Using Ruby on Rails - Mapping ActiveRecord Models

  - by michaeldelorenzo

  I've put together a RoR application and would now like to publish a RESTful web service for interacting with my application. I'm not sure where to go exactly, I don't want to simply expose my ActiveRecord models since there is some data on each model that isn't needed or shouldn't be exposed via an API like this. I also don't want to create a SOAP solution. My application is built using Rails 2.3.5 and I hope to move to Rails 3.0 soon after its released. I'm basically looking for a way to map my ActiveRecord models to "models" that would be exposed via the web service. Is ActiveResource the correct thing to use? What about ActionWebService?

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• Drupal - no self-linking

  - by pygorex1

  So, I've added several pages to my Drupal install and linking to the pages using URL aliases via the Path module. So far so good - http://mydrupal/node/1 becomes http://mydrupal/about which is exactly what I'm looking for. Then I'm adding these links to the primary navigation and outputting the primary links via a custom theme (copy and paste the primary link code from the Chameleon theme). Here's the problem: when viewing http://mydrupal/about the page links to itself - that is the "About" link at http://mydrupal/about is still linking to http://mydrupal/about - the behavior I'm looking for is to have the "About" text display without a link. In summary: how do I prevent self-linking of pages when displaying the primary navigation?

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• How do I get my mac to boot from an Ubuntu USB key?

  - by Vinay Gupta

  so if you select "mac" and "usb" on this download page, it gives a series of command line instructions to make a USB key which the MacBook will boot into Ubuntu from. http://www.ubuntu.com/desktop/get-ubuntu/download I've followed them to the letter two or three times on different USB keys, and it doesn't work. There's a very great deal of technical discussion about EFI etc. but this set of instructions seems to suggest it should Just Work, and it doesn't. Help? I'm increasingly unhappy with the more locked-down approach Apple is taking, and I'd quite like to start using Linux with a view to transitioning over to using it as my main operating system, but booting from the CD takes forever, runs slowly and I'm really hoping to get it moving off USB. Can anybody help me?

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• VS 2010 Debugger Improvements (BreakPoints, DataTips, Import/Export)

  This is the twenty-first in a series of blog posts Im doing on the VS 2010 and .NET 4 release.  Todays blog post covers a few of the nice usability improvements coming with the VS 2010 debugger.  The VS 2010 debugger has a ton of great new capabilities.  Features like Intellitrace (aka historical debugging), the new parallel/multithreaded debugging capabilities, and dump debuging support typically get a ton of (well deserved) buzz and attention when people talk about the debugging...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Portal Turret Recreation an Amazing Clone of the Original [Video]

  - by Jason Fitzpatrick

  Last week Valve, the company behind the Portal series, received a crate containing a stunning replica of the iconic Portal turret sentry. Check out this video to see the turret in action. Valve explains the origin of the crate: On September 13th, 2012, Valve received another mysterious crate from WETA Workshop. Inside was a full-scale, articulated Portal turret, complete with a motion sensor. Once again, WETA Workshop’s gone far, far beyond our expectations to deliver something truly amazing. Thank you, WETA Workshop! If you’re ready to waste a little time geeking out over awesome props, designs, and other special FX goodies, you’ll definitely want to check out WETA’s site. [via Geeks Are Sexy] How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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• Does a System.Collection.Collection<T> wrap a IList<T> or enumerate over the IList<T> or simply wra

  - by Brian Triplett

  If I am exposing a internal member via a Collection property via: public Collection<T> Entries { get { return new Collection<T>(this.fieldImplimentingIList<T>); } } When this property is called what happens? For example what happens when the following lines of code are called: T test = instanceOfAbove.Entries[i]; instanceOfAbove[i] = valueOfTypeT; It's clear that each time this property is called a new reference type is created but what acctually happens? Does it simply wrap the IList<T> underneath, does it enumerate over the IList<T> and to create a new Collection<T> instance? I'm concerned about performance if this property is used in a for loop.

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• remove json attribute where attribute is a variable

  - by pedalpete

  I have a news feed where items in the feed are created from JSON returned from a server. When the user takes an action on an item, I want to remove it from the object via javascript. The feed looks like this: {"newsFeed":[{"feedId":"1", "title":"item1 title", "desc":"description of the item"}, {"feedId":"2", "title":"item2 title", "desc":"description of the item"}]} I'm trying to remove a JSON attribute or entry where the feedId is passed in via a variable using jQuery. I'm not sure exactly where I'm going wrong here, but when I alert the feed before and after the removal of the object, I'm getting the same response: function removeFromFeed(feedId){ var newsFeed=jQuery('div#newsFeed').data('newsFeed'); alert(newsFeed.toSource()); delete newsFeed.feedId[feedId] jQuery('div#newsFeed').data('newsFeed',newsFeed); alert(newsFeed.toSource()); }

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• Drupal 5: CCK fields in custom content type

  - by Kuroki Kaze

  I have module that implements custom content type via NodeAPI hooks (hook_insert, hook_update etc). I want to add CCK field to this content type and populate it via hook_nodeapi calls like create or update (to show content nodes in Views). Problem is, I cannot access CCK fields for this content type. Sure, it's enabled on "Manage Fields" page, but when I load any node of this type with Devel module, I cannot see field attribute (field_flag) in node object. I can see it under "Dev Render" tab as part of "content" attribute, like $node-content['field_flag']['#value'], but if I assign value to $node-field_flag or $node-content['field_flag']['#value'] and call node_save, CCK fields are not saved. Maybe I must call some other function to save CCK fields? Or what may be wrong with this setup?

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• The Grand Unified Framework Theory

  Tom Janssens left a comment: What still bugs me is that we do not have a unified pattern for all .net dev (using modelbinders and icommand for example...) But, Tom we are pretty close. At least as close as we should be, I think. With .NET there are plenty of low level patterns we can reuse regardless of the application platform or architecture. Stuff like: Asynchronous programming with events or the TPL. Object queries with LINQ. Resource management with IDispose. At a higher...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Listeners when using hylafax from Java

  - by DaDaDom

  I am trying to send a fax to a hylafax server via Java: Client faxClient = new HylaFAXClient(); faxClient.open(...); faxClient.user(...); faxClient.pass(...); Job j = faxClient.createJob(); job.setStuff(...); job.setNotifyType(Job.NOTIFY_ALL); faxClient.addTransferListener(new FaxTransferListener()); faxClient.addConnectionListiener(new FaxConnectionListener()); faxClient.submit(job); The problem is that I don't get any notifications on any of the listener methods. When I watch the queues on the hylafax server, e.g. via JHylaFax, the job failed, but how can I react to that event programatically on client side without having to poll the job queues regularly?

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• Problem mounting USB Mobile Broadband dongle in Ubuntu 13.04

  - by Still A Learner

  I have been using Ubuntu 13.04 since last two months and I have problem mounting my USB dongle. I have Lenovo G-580 series laptop. It has 3 USB ports which are 3.0. When I attach dongle to one of the three USB ports the device gets mounted immediately but in the other two ports I have to reboot the OS while the dongle is attached to the laptop in order to mount it and connect to the internet. My dongle is of ZTE. I don't get what is going wrong.

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• WCF - Dynamically Change WebResponseFormat

  - by Brandon

  Is there a way to dynamically change the WebResponseFormat on a method given a parameter passed by the client? I default my WebResponseFormat to XML, but I want to give the client the opportunity to specify a format as JSON or XML and if none is specified, default to XML. Currently I am doing the following: [WebGet(UriTemplate = "objects", BodyStyle = WebMessageBodyStyle.Bare)] [OperationContract] List<SampleObject> GetObjects(); The user can call it via: http://localhost/rest/myservice/objects They then can specify a format by doing: http://localhost/rest/myservice/objects?format=json The problem is that when I try to set the response content type via: WebOperationContext.Current.OutgoingResponse.ContentType = "application/json"; That just returns the XML but the browser attempts to process it like a JSON object instead of serializing the response as JSON. Is this even possible with .NET 3.5 outside of using a Stream as the return value and serializing the response myself? If not, is there a better solution?

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• Unity spontaneously logs out in Ubuntu 12.04

  - by Yang

  This started happening after I upgraded from 11.10. I'm running on a Latitude 13 laptop with an Intel Mobile 4 Series Chipset Integrated Graphics Controller (not Nvidia) - no proprietary drivers. It seems to happen under load, though I can't tell if the load is caused by something with this problem or by a program I'm running. I'd like to try nailing this problem. Ideally I don't want to switch to something else (at least not before knowing that that's the only way out and that it's specific to Unity and not, say, X).

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• Whatchamacallit: You know how there are breadcrumbs and sliders and whatnot

  - by Richard

  What do you call it when a web site (especially corporate/retail) has a series of rows with thumbnails, each with a little caption/description beneath explaining some benefit or feature of a product or service. Is there a name for this? I'm building a theme that incorporates this kind of design and I was hoping there is some kind of shorthand for this design feature. If you don't know what I'm talking about, check out one of the links below. http://themeforest.net/item/revolution-minimalist-business-html-template/full_screen_preview/2295335 http://themes.two2twelve.com/preview?theme=freshserve

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• installing my Graphic Card on ubuntu12.04

  - by lamouchi amine

  I have a HP Pavillion G6 series 1225, i5 laptop with Radeon HD 6470M switchable VGA. i installed Ubuntu 12.04 LTS but the VGA drivers don't work properly. I want to install drivers into the Ubuntu. But when I do it arrived error message like this: sorry, installation of this driver failed. Please have a look at the log file for details: /var/log/jockey.log I found a solution in a link: http://ubuntuforums.org/showthread.php?t=1930450 It works for a few steps and then in the installation of the package of the AMD driver, a message pops up 'fatal error' and it redirects me to Ask Ubuntu to find a solution, please help me, I need to make it work.

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• A hónap könyve: "Achieving Extreme Performance with Oracle Exadata"

  - by Lajos Sárecz

  Luis Moreno Campos ocpdba oracle weblog blogjában találtam a fenti fotót és a hírt, hogy megjelent az elso Oracle Exadata-ról szóló könyv! Már a tartalomjegyzék alapján nagyon ígéretes a könyv. Azt gondolom kötelezo olvasmány mindazoknak, akik használják, használni fogják az Oracle Exadata Database Machine-t, vagy egyszeruen csak érdeklodnek azon Oracle technológiák iránt, melyek annyira kimagasló képességuvé teszik ezt a korszakváltó adatbázis szervert. A könyv az alábbi forrásból érheto el: Achieving Extreme Performance with Oracle Exadata (Osborne ORACLE Press Series) Rick Greenwald Apropó, épp félóra múlva lesz egy érdekes webcast arról, hogyan lehet biztonsággal vegyes terhelést futtatni egy Exadata szerveren. Még lehet regisztrálni!

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• Create a package for official Realtek ALC665 drivers (Dell XPS 15 L502X)

  - by Nic

  is it possible for someone to create an ALSA driver package from the official Realtek "LinuxPkg_5.17Beta.tar.bz2" drivers (found via Google)? These drivers provide excellent support for the ALC665 chipset, found eg. in the Dell XPS 15 notebook series (L502x). All the features like output selection (HDMI, headphones) that were not working before are supported. I am asking for a package because the driver is unusable as-is: it comes with an outdated version of ALSA that does not compile on a 3.5 kernel. Apart from that, it also removes all the default snd-* drivers that come with the kernel package. Any help in bringing better support for this device to the official Ubuntu packages is much appreciated. N.

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• Jad file download link for my website

  - by Jareim

  Hi sir/madam! I am putting up a small website via webs.com for me and my friends that could also be accessible via wap, i.e. mobile internet, and I want to add links to my site that downloads .jar files. I uploaded the files on my site, and links to the .jar files went fine, but I also need links for .jad files (for some mobile phones that require .jad files FIRST then .jar). I tried doing a regular link for the .jad files, but it simply displayed the content of the .jad file. It wasn't installed or downloaded. What should I do? Or am I at a wrong website? Thanks!

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• How to install downloaded Canon ScanGear

  - by GreenSee

  I have newly installed Ubuntu 12.04. I have Canon MG6360 printer/scanner. I have successfully installed printer drivers and can print okay. Have downloaded MG6300 series ScanGear MP Ver. 2.00 for Linux (deb) from Canon but don't know how to install this from terminal. I apologise for having to ask such a basic question! Thanks. Later...I have extracted the files. Question appears: Do I want to run install.sh? I click 'run in terminal', and enter password. I don't know if it installed and don't know how to check. Scanner does not work or 'see' the PC. Any advice would be greatly appreciated.

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• Pain of the Week/Expert's Perspective: Performance Tuning for Backups and Restores

  - by KKline

  First off - the Pain of the Week webcast series has been renamed. It's now known as The Expert's Perspective . Please join us for future webcasts and, if you're interested in speaking, drop me a note to see if we can get you on the roster! The bigger your databases get, the longer backups take. That doesn't really seem like a huge problem — until disaster strikes and you need to restore your databases as fast as possible. Join my buddy Brent Ozar ( blog | twitter ), a Microsoft Certified Master of...(read more)

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• Ubuntu 11.10, FF 11, ATI Catalyst v12.2, Driver Package version 8.95, WebGL doesn't work

  - by Victor S

  I'm running Ubuntu 11.10, FF 11, ATI Catalyst v12.2, Driver Package version 8.95, WebGL doesn't work. This is a pretty capable setup and definetly did have FF work previously, Note: I've downloaded and installed the ATI drivers from AMD. Not sure how to get WebGL working. Updated My video card info: 01:00.0 VGA compatible controller: ATI Technologies Inc Cypress [Radeon HD 5800 Series] (prog-if 00 [VGA controller]) Subsystem: ATI Technologies Inc Device 0b00 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at fbee0000 (64-bit, non-prefetchable) [size=128K] I/O ports at d000 [size=256] Expansion ROM at fbec0000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Kernel driver in use: fglrx_pci Kernel modules: fglrx, radeon

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• How do I create a reusable WF sequential workflow?

  - by djgiard

  I have two customers that have the same workflow (Create file -transport file - wait for response - send response to internal team); however the implementation of each step is different for each customer. For example, one customer requires a flat file to be sent via SFTP, while the other customer requires an XML file to be sent via FTP. I'd like to create a sequential workflow, using Microsoft Workflow Foundation (WF) and reuse this workflow for multiple vendors. Each action's call to an external module can use the same interface, but a different concrete implementation. However, I'm unfamiliar with WF and I'm not sure how to implement this. Can someone point me to the proper way to use this pattern? Will it make a difference whether I choose WF 3.5 or WF 4.0? Thank you.

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• [Cocoa] NSTask string encoding problem

  - by ryyst

  Hi, In my program, I'm grep-ing via NSTask. For some reason, sometimes I would get no results (even though the code was apparently the same as the command run from the CLI which worked just fine), so I checked through my code and found, in Apple's documentation, that when adding arguments to an NSTask object, "the NSTask object converts both path and the strings in arguments to appropriate C-style strings (using fileSystemRepresentation) before passing them to the task via argv[]" (snip). The problem is that I might grep terms like "Río Gallegos". Sadly (as I checked with fileSystemRepresentation), that undergoes the conversion and turns out to be "RiÃÅo Gallegos". How can I solve this? -- Ry

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• C# and MySQL .NET Connector - Any way of preventing SQL Injection attacks in a generic class?

  - by John M

  My idea is to create some generic classes for Insert/Update/Select via a C# (3.5) Winforms app talking with a MySQL database via MySQL .NET Connector 6.2.2. For example: public void Insert(string strSQL) { if (this.OpenConnection() == true) { MySqlCommand cmd = new MySqlCommand(strSQL, connection); cmd.ExecuteNonQuery(); this.CloseConnection(); } } Then from anywhere in the program I can run a query with/without user input by just passing a SQL query string. Reading around on SO is starting to give me the indication that this may lead to SQL injection attacks (for any user-input values). Is there anyway of scrubbing the inputted strSQL or do I need to go and create individual parameterized queries in every method that needs to do a database function?

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