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• Correct Rotation and Translation with a 4x4 matrix

  - by sFuller

  I am using a 4x4 matrix to transform verts in a shader. I multiply an identity matrix by a rotation matrix by a translation matrix. I am trying to first rotate the verts and then translate them, however in my result, it appears that the verts are being transformed and then rotated. My matrix looks something like this: m00 m01 m02 tx m10 m11 m12 ty m20 m21 m22 tz --- --- --- 1 I am not using OpenGL's fixed function pipeline, I am multiplying matrices on the client side, and uploading the matrix to a GLSL shader. If it helps, I am using my own matrix multiplication code, but I have recreated this problem using matrices on my graphing calculator, so I don't believe my matrix code has errors.. I'll include a visual aid if needed.

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• Symbolic link not allowed or link target not accessible: /var/www on Ubuntu 11.04

  - by Jamie Hutber

  I am getting a 403 when i access http://mayfieldafc.local/ upon looking in the apache logs i am getting [Wed Nov 16 12:32:59 2011] [error] [client 127.0.0.1] Symbolic link not allowed or link target not accessible: /var/www I have what i believe to be the correct permissions set on /var/www. hutber can create and delete files, hutber being my user. I can also execute as program on this folder. in mayfields vhost its: <Directory /var/www/mayfieldafc/docroot> Options +FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> I am pulling my hair out not being able to work on my sites with my work ubuntu install. I know of nothing else that could be effecting this. So any ideas?

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• Ensure we're found in Facebook search for both full & abbreviated company names?

  - by hawbsl

  We have a client with a facebook page, let's say his company is called Bob Roberts Super Widgets. And if you search in Facebook for Bob Roberts Super Widgets then up he pops. But the shorthand he's commonly known by is BR Super Widgets and indeed the website we've created for him is br-super-widgets.com. In Facebook, searching for BR Super Widgets doesn't show up our Mr Bob. We don't have a lot of Facebook expertise, so asking for help here. Does anyone know how to ensure you're found in Facebook search for both short and long company names? Have found this this similar question in the Facebook forum but the poor old questioner never got a response.

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• Why does this script not open parallel gnome-terminals on a server?

  - by broiyan

  Why am I not able to have parallel gnome-terminals on my server while I can on my client. Here is a test that illustrates the problem. #!/bin/bash # this is the parent script gnome-terminal --command "./left.sh" sleep 10 gnome-terminal --command "./right.sh" #!/bin/bash echo "this is the left script" read -p "press any key to close this terminal" key #!/bin/bash echo "this is the right script" read -p "press any key to close this terminal" key When I run this on a regular ubuntu desktop (maverick) I see two terminals after 10 seconds. When I run this on a maverick server at a server farm, the second window does not appear until after I close the first one and wait 10 seconds. I am using tightvncserver to view the server desktop. (I could have simplified a bit more. The 10 second sleep is extraneous to the problem. In my real world application I need the first terminal to do some real work before starting the second. The problem probably still exists even if there is no sleep.)

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• How to Export Email "Sent" Folder?

  - by user249493

  A client had her web site and email hosted at "company A". She was switching to "company B" but didn't want to lose her email. I set up a Gmail account, POPed into her webmail account, and pulled the entire inbox into Gmail (for later transfer to her new host). But I forgot about the "sent" folder. Although the hosting plan is still up and running, she changed her domain record to point to the new host. So I can't access the old webmail account via POP or IMAP because the email address needed for authentication now resolves to the new host. Is there any way I can get the contents of the sent folder without having to do a "forward" one message at a time (there are hundreds)?

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• svn usage advice

  - by AngeloBad

  I need an advice about SVN usage. I use Tortoise SVN on my client to deal with a project I am working on. The probjem is that I have two set of bugs top fix on the project. One to deploy till 5 days, and one to deploy till 10 days. I am going to solve all the bugs before the 5fth days but I do not want to deploy the last 5 before the release date (till 10 days). How can I work on two separate codes and the merge all the modification? Is it possible? I have to create a branch?

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• Which token from a long User-Agent should I use in robots.txt?

  - by Gaia

  The definition of User-Agent states that several tokens can be included, as deemed necessary by the client. I want to block certain bots via robots.txt and I am confused as to which part of the User-Agent string to use, especially for more obscure bots. For example: Mozilla/5.0 (compatible; uMBot-LN/1.0; mailto: [email protected])" JS-Kit URL Resolver, http://js-kit.com/ Mozilla/5.0 (compatible; SEOkicks-Robot +http://www.seokicks.de/robot.html Do I use the second token? Can tokens contain spaces, or did the SEOkicks folks forget a semicolon after SEOkicks-Robot? I don't actually intend on making my question specific to a couple bots - I want to know the guideline: which part of UA do I place in robots.txt for these exotic bots with UA as long as a haiku? User-agent: uMBot-LN/1.0 Disallow: / PS: Thank you but I do not need to hear that undesirable bots are better blocked with mod_security. I already have commercial mod_sec rules in place.

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• Is extensive documentation a code smell?

  - by Griffin

  Every library, open-source project, and SDK/API I've ever come across has come packaged with a (usually large) documentation file, and this seems contradictory to the wide-spread belief that good code needs little to no comments. What separates documentation from this programming methodology? a one to two page overview of a package seems reasonable, but elegant code combined with standard intelisense should have theoretically deprecated the practice of documentation by now IMO. I feel like companies only create detailed documentation and tutorials because its what they've always done. Why should developers have to constantly be searching through online documentation in order to learn how to do things when such information should be intrinsic to the classes, methods and namespaces?

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• What to do when projects are slow and you are being held up by others?

  - by antonpug

  Where I work, projects take a significant amount of time because the teams are large, there is a lot of "design and analysis", a lot of documentation, and work always gets pushed off. I work in the middle tier and I always have to wait for the services and client folks to get their work done. Oftentimes there are weeks at a time when I can't get any work done. I feel bored and weird just sitting here scrambling to at least appear like I am busy. Management seems to do little when asked for more work. What do you do in such cases?

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• A bunch of SharePoint 2010 Videos

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). DNRTV – Developing for SharePoint 2010 Talks about LINQ to SharePoint, and a basic intro of the dev tools. watch Telerik Silverlight Chart showing live data from SharePoint 2010. This video demonstrates the usage of a custom WCF service and a custom silverlight frontend. watch. Telerik Silverlight Grid with BCS Lists in SharePoint 2010 This video demonstrates BCS + Client Object Model + A silverlight front end. watch Telerik R.A.D Calendar shown working with an OOTB Calendar list watch Large file upload in SP using Silverlight. watch Silverlight coverflow implemented on a picture library watch Integrating Yahoo Geocoding API, Bing maps, and Bing search engine in a Silverlight UI in SharePoint watch SharePoint 2010 scalability, RBS, and related stuff. watch SharePoint 2007 and Silverlight – talks about TDD etc. watch Comment on the article ....

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• Good PHP BOOKS for starters!

  - by Goma

  I started reading some PHP books. Most of them in their introduction say that this book , unlike other books, it follows a good habits and practices. Now, I do not know which book tells the truth, and which writer is the most experienced in PHP. These are the books that I had a quick look to their first chapter: PHP and MySQL Web Development (Developer's Library) by Luke Welling and Laura Thomson. Build Your Own Database Driven Web Site Using PHP & MySQL by Kevin Yank. PHP and MySQL for Dummies by Janet Valade. Now, it's your time to advise me and tell me about the excellent one that follows best practices, please give an advice from your experience. (It could be any other book!). Regards,

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• System Wide Performance Sanity Check Procedures

  - by user702295

  Do you need to boost your overall implementation performance? Do you need a direction to pinpoint possible performance opportunities? Are you looking for a general performance guide? Try MOS note 69565.1.  This paper describes a holistic methodology that defines a systematic approach to resolve complex Application performance problems.  It has been successfully used on many critical accounts.  The 'end-to-end' tuning approach encompasses the client, network and database and has proven far more effective than isolated tuning exercises.  It has been used to define and measure targets to ensure success.  Even though it was checked for relevance on 13-Oct-2008, the procedure is still very valuable. Regards!  

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• How to explain to non-technical person why the task will take much longer then they think?

  - by Mag20

  Almost every developer has to answer questions from business side like: Why is going to take 2 days to add this simple contact form? When developer estimates this task, they may divide it into steps: make some changes to Database optimize DB changes for speed add front end HTML write server side code add validation add client side javascript use unit tests make sure SEO is setup is working implement email confirmation refactor and optimize the code for speed ... These maybe hard to explain to non-technical person, who basically sees the whole task as just putting together some HTML and creating a table to store the data. To them it could be 2 hours MAX. So is there a better way to explain why the estimate is high to non-developer?

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• To start with Multiplayer game development

  - by jeyanthinath

  Me and my friend are planned to develop a Multiplayer game , I can have no (lack of) knowledge about the gaming .. But there are many tutorials and e books available for game development !! But for Multiplayer gaming i am in need better knowledge I cant understand what is going on there and i visit the blogs and other questions sections and i hear the something about networking concepts such as Packets,data transfer ,client-server communication , peer-peer I am tired of being to those posts and reading what that i don't know .. Tell me how to deal with this situation and overcame the problem to learn something about networking concepts and game development techinques related to multiplayer gaming

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• Using <= for every dependency in case of following semantic versioning idea

  - by zerkms

  As Semantic Versioning (and common sense) declares - the major version is incremented in case if non backward compatible change is introduced. Now let's assume we have a project called Project that has a current version 1.0.42 and a library Lib it depends on that is of a 2.1.3 version at the moment. Does that mean that following semver ideology we should constraint the dependency of the Project to be Depends: Lib (< 3)? From my experience - no one does that, but I find it semantically correct and very self-descriptive. What do you think of this?

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• There is any reason for which a delete method/field/function refactoring doesn't exist?

  - by raisercostin

  An operation in an interface is obsolete so I decided to delete it. It seems that there is no automatic support for such a "refactoring". For me is a refactoring operation since the behavior of the code will be preserved since nobody(tests, client apis) will notice that the operation was removed. In eclipse, in java code, on an method in an interface I have the following options: rename, move, change method signature, inline, extract interface, extract superclass, use supertype when possible, pull up, push down, introduce parameter objet, introduce indirection, generate declared type. There is any reason for which a delete method/field/function refactoring doesn't exist?

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• Uploading a file automatically for speed test?

  - by Abhi

  I am building a Web UI for a device for internet connection and one of the requirements in it is a speed test. I know the basic concept of how speed test works. A file is downloaded for a limited time then the same file is uploaded again and the speed is tracked at regular intervals. Downloading the file is not an issue, but how am I supposed to upload the file without the client knowing that the file is getting uploaded? I've read through a lot of documentation, but I'm still not able to get the answer to how I will upload the file from clients machine without asking him to select the file.

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• Caveat utilitor - Can I run two versions of Microsoft Project side-by-side?

  - by Martin Hinshelwood

  A number of out customers have asked if there are any problems in installing and running multiple versions of Microsoft Project on a single client. Although this is a case of Caveat utilitor (Let the user beware), as long as the user understands and accepts the issues that can occur then they can do this. Although Microsoft provide the ability to leave old versions of Office products (except Outlook) on your client when you are installing a new version of the product they certainly do not endorse doing so. Figure: For Project you can choose to keep the old stuff   That being the case I would have preferred that they put a “(NOT RECOMMENDED)” after the options to impart that knowledge to the rest of us, but they did not. The default and recommended behaviour is for the newer version installer to remove the older versions. Of course this does not apply in the revers. There are no forward compatibility packs for Office. There are a number of negative behaviours (or bugs) that can occur in this configuration: There is only one MS Project In Windows a file extension can only be associated with a single program.  In this case, MPP files can be associated with only one version of winproj.exe.  The executables are in different folders so if a user double-clicks a Project file on the desktop, file explorer, or Outlook email, Windows will launch the winproj.exe associated with MPP and then load the MPP file.  There are problems associated with this situation and in some cases workarounds. The user double-clicks on a Project 2010 file, Project 2007 launches but is unable to open the file because it is a newer version.  The workaround is for the user to launch Project 2010 from the Start menu then open the file.  If the file is attached to an email they will need to first drag the file to the desktop. All your linked MS Project files need to be of the same version There are a number of problems that occur when people use on Microsoft’s Object Linking and Embedding (OLE) technology.  The three common uses of OLE are: for inserted projects where a Master project contains sub-projects and each sub-project resides in its own MPP file shared resource pools where multiple MPP files share a common resource pool kept in a single MPP file cross-project links where a task or milestone in one MPP file has a  predecessor/successor relationship with a task or milestone in a different MPP file What I’ve seen happen before is that if you are running in a version of Project that is not associated with the MPP extension and then try and activate an OLE link then Project tries to launch the other version of Project.  Things start getting very confused since different MPP files are being controlled by different versions of Project running at the same time.  I haven’t tried this in awhile so I can’t give you exact symptoms but I suspect that if Project 2010 is involved the symptoms will be different then in a Project 2003/2007 scenario.  I’ve noticed that Project 2010 gives different error messages for the exact same problem when it occurs in Project 2003 or 2007.  -Anonymous The recommendation would be either not to use this feature if you have to have multiple versions of Project installed or to use only a single version of Project. You may get unexpected negative behaviours if you are using shared resource pools or resource pools even when you are not running multiple versions as I have found that they can get broken very easily. If you need these thing then it is probably best to use Project Server as it was created to solve many of these specific issues. Note: I would not even allow multiple people to access a network copy of a Project file because of the way Windows locks files in write mode. This can cause write-locks that get so bad a server restart is required I’ve seen user’s files get write-locked to the point where the only resolution is to reboot the server. Changing the default version to run for an extension So what if you want to change the default association from Project 2007 to Project 2010?   Figure: “Control Panel | Folder Options | Change the file associated with a file extension” Windows normally only lists the last version installed for a particular extension. You can select a specific version by selecting the program you want to change and clicking “Change program… | Browse…” and then selecting the .exe you want to use on the file system. Figure: You will need to select the exact version of “winproj.exe” that you want to run Conclusion Although it is possible to run multiple versions of Project on one system in the main it does not really make sense.

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• Books, resources and so on about GUI architecture [on hold]

  - by Moses

  I'm making first steps in GUI programming. Earlier I've had little experience with GUI and I remember that it was kind of pain. Code was either coupled or to verbose with tons of "Listeners". It seems to me that problem in me and not in a library that I used(Swing). So, could you recommend me some books, tutorials or resources where I can find how to design gui programms? Emphasize that I'm interested in architecture and not in how to use components of some framework(which about 90% of tutorials that I've ever seen).

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• rts libgdx design?

  - by user36531

  I am attempting to create a simple rts multi-player strategy game using libgdx. I am stumped at the moment. I want the underlying game world to run at all times and be aware of where all items are on the map.. so if player A logs in and moves unit to some location on the grid and logs off, that unit info is still there and can be accessed again by player A when they log back on to move somewhere else (if it didnt get attacked during the playerA was logged off). How can i do this? Do i create a main game world on the server and when players connect make client just sequentially request whats in each visible tile? Is there an easier way to get this done? Or go SQL route? Whats better?

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• Death March

  - by Nick Harrison

  It is a horrible sight to watch a project fail. There are few things as bad. Watching a project fail regardless of the reason is almost like sitting in a room with a "Dementor" from Harry Potter. It will literally suck all of the life and joy out of the room. Nearly every project that I have seen fail has failed because of political challenges or management challenges. Sometimes there are technical challenges that bring a project to its knees, but usually projects fail for less technical reasons. Here a few observations about projects failing for political reasons. Both the client and the consultants have to be committed to seeing the project succeed. Put simply, you cannot solve a problem when the primary stake holders do not truly want it solved. This could come from a consultant being more interested in extended the engagement. It could come from a client being afraid of what will happen to them once the problem is solved. It could come from disenfranchised stake holders. Sometimes a project is beset on all sides. When you find yourself working on a project that has this kind of threat, do all that you can to constrain the disruptive influences of the bad apples. If their influence cannot be constrained, you truly have no choice but to move on to a new project. Tough choices have to be made to make a project successful. These choices will affect everyone involved in the project. These choices may involve users not getting a change request through that they want. Developers may not get to use the tools that they want. Everyone may have to put in more hours that they originally planned. Steps may be skipped. Compromises will be made, but if everyone stays committed to the end goal, you can still be successful. If individuals start feeling disgruntled or resentful of the compromises reached, the project can easily be derailed. When everyone is not working towards a common goal, it is like driving with one foot on the break and one foot on the accelerator. Not only will you not get to where you are planning, you will also damage the car and possibly the passengers as well.   It is important to always keep the end result in mind. Regardless of the development methodology being followed, the end goal is not comprehensive documentation. In all cases, it is working software. Comprehensive documentation is nice but useless if the software doesn't work.   You can never get so distracted by the next goal that you fail to meet the current goal. Most projects are ultimately marathons. This means that the pace must be sustainable. Regardless of the temptations, you cannot burn the team alive. Processes will fail. Technology will get outdated. Requirements will change, but your people will adapt and learn and grow. If everyone on the team from the most senior analyst to the most junior recruit trusts and respects each other, there is no challenge that they cannot overcome. When everyone involved faces challenges with the attitude "This is my project and I will not let it fail" "You are my teammate and I will not let you fail", you will in fact not fail. When you find a team that embraces this attitude, protect it at all cost. Edward Yourdon wrote a book called Death March. In it, he included a graph for categorizing Death March project types based on the Happiness of the Team and the Chances of Success.   Chances are we have all worked on Death March projects. We will all most likely work on more Death March projects in the future. To a certain extent, they seem to be inevitable, but they should never be suicide or ugly. Ideally, they can all be "Mission Impossible" where everyone works hard, has fun, and knows that there is good chance that they will succeed. If you are ever lucky enough to work on such a project, you will know that sense of pride that comes from the eventual success. You will recognize a profound bond with the team that you worked with. Chances are it will change your life or at least your outlook on life. If you have not already read this book, get a copy and study it closely. It will help you survive and make the most out of your next Death March project.

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• BCS with Visual Studio 2010

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). BCS or Business Connectivity services is a new and much improved, and much much enhanced version of what used to be BDC in SharePoint 2007. It allows external data to be surfaced inside of SharePoint. But compared to BDC, it comes with much richer a) Presentation options – in both server and client. b) Tooling support – In SharePoint designer and Visual Studio c) Connectivity options – in conjunction with the secure store service. In my newest article on BCS, I talk about BCS in SharePoint 2010 with Visual Studio 2010. Hope you like it. There is also a whole chapter (Chapter #9) devoted to BCS in my book. Comment on the article ....

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• Free Version of Oracle Application Development Framework (Oracle ADF)

  - by Steve Muench

  I'm very happy to finally be able to talk about this. A long time coming, the press release is finally out: Oracle Introduces Free Version of Oracle Application Development Framework New Oracle ADF Essentials Brings ADF Benefits to the Broader Developer Community Oracle ADF Essentials is a free packaging of core technologies from the Oracle Application Development Framework that can be used to develop and deploy applications that include ADF Business Components, ADF Controller, ADF Binding, and ADF Faces Rich Client Components without incurring licensing costs. Both Oracle JDeveloper and Oracle Enterprise Pack for Eclipse provide visual and declarative development experience for using it. Oracle ADF Essentials comes with specific instructions and certification for deploying applications on the open-source Glassfish server, but the license is not limited to that server. For more information and to download it (it's only 20MB), see Oracle ADF Essentials page on OTN.

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• Cool examples of procedural pixel shader effects?

  - by Robert Fraser

  What are some good examples of procedural/screen-space pixel shader effects? No code necessary; just looking for inspiration. In particular, I'm looking for effects that are not dependent on geometry or the rest of the scene (would look okay rendered alone on a quad) and are not image processing (don't require a "base image", though they can incorporate textures). Multi-pass or single-pass is fine. Screenshots or videos would be ideal, but ideas work too. Here are a few examples of what I'm looking for (all from the RenderMonkey samples): PS - I'm aware of this question; I'm not asking for a source of actual shader implementations but instead for some inspirational ideas -- and the ones at the NVIDIA Shader Library mostly require a scene or are image processing effects. EDIT: this is an open-ended question and I wish there was a good way to split the bounty. I'll award the rep to the best answer on the last day.

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• Google Analytics conversion tracking - referrals from payment provider

  - by martynas

  I have a question regarding conversion tracking using Google Analytics. My client uses an external payment service provider - SecureTrading. Problem: All website visitors who would like to make a purchase are taken to a payment form on https://securetrading.net and are redirected back after a successful payment. Google Analytics counts that as a referral and messes up conversion tracking stats. Question: What needs to be changed / added in the payment forms or Google Analytics settings so that the conversions would be assigned to the right traffic sources. Screenshot:

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