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• Tables with no Primary Key

  - by Matt Hamilton

  I have several tables whose only unique data is a uniqueidentifier (a Guid) column. Because guids are non-sequential (and they're client-side generated so I can't use newsequentialid()), I have made a non-primary, non-clustered index on this ID field rather than giving the tables a clustered primary key. I'm wondering what the performance implications are for this approach. I've seen some people suggest that tables should have an auto-incrementing ("identity") int as a clustered primary key even if it doesn't have any meaning, as it means that the database engine itself can use that value to quickly look up a row instead of having to use a bookmark. My database is merge-replicated across a bunch of servers, so I've shied away from identity int columns as they're a bit hairy to get right in replication. What are your thoughts? Should tables have primary keys? Or is it ok to not have any clustered indexes if there are no sensible columns to index that way?

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• Drawing star shapes with variable parameters

  - by owca

  Hi. I have task to write program allowing users to draw stars, which can differ in size and amount of arms. When I was dealing with basic stars I was doing it with GeneralPath and tables of points : int xPoints[] = { 55, 67, 109, 73, 83, 55, 27, 37, 1, 43 }; int yPoints[] = { 0, 36, 36, 54, 96, 72, 96, 54, 36, 36 }; Graphics2D g2d = ( Graphics2D ) g; GeneralPath star = new GeneralPath(); star.moveTo( xPoints[ 0 ], yPoints[ 0 ] ); for ( int k = 1; k < xPoints.length; k++ ) star.lineTo( xPoints[ k ], yPoints[ k ] ); star.closePath(); g2d.fill( star ); What method should I choose for drawing stars with variable inner and outer radius, as well as different amount of arms ? This is what I should obtain :

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• Robots Crawling Across Namespace?

  - by Codex73

  I migrated site from one domain to another. Also placed permanent redirection on old account. My stats logs are capturing this: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) /libro_metaboforte_chap5.php/members/members/file_chap6.php I placed this on robots which wasn't present at time of migration. Robots.txt Contents User-agent: * Allow: / Disallow: /members/ Disallow: /includes/ HTACCESS FILE CONTENTS DirectoryIndex index.php index.html Options +FollowSymlinks RewriteEngine On # Turn on the rewriting engine RewriteBase / RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !^/store/?$ RewriteCond %{QUERY_STRING} !. RewriteRule ^.+/?$ index.php [QSA,L] RewriteCond %{QUERY_STRING} ^curlang=([a-z]*)$ RewriteRule ^.+/?$ index.php? [QSA,L] Will continue to log incoming bot captures. My htaccess does rewrite. I just added the robot file. The funny part is that is stepping in double directories... I don't know if the problem was not having the 'robots.txt' in place or the actual in place htaccess doing rewrites?

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• Recommendations for supporting both Oracle and MSSQL in the same ASP.NET app with NHibernate

  - by Hugo Zapata

  Our client wants to support both SQLServer and Oracle in the next project. Our experience comes from .NET/SQL Server platform. We will hire an Oracle developer, but our concern is with the DataAccess code. Will NHibernate make the DB Engine transparent for us? I don't think so, but i would like to hear from developers who have faced similar situations. I know this question is a little vague, because i don't have Oracle experience, so i don't know what issues we will find.

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• ASP.NET MVC Populating a DropDownList with a value from the view

  - by lomaxx

  In my controller I have this: ViewData["maskList"] = new SelectList(equipmentRepository.GetMasks(), "Id", "DisplayName"); and then I bind it to my view using <div each="var nfa in mfa.NasalFittingAssessment"> ${Html.DropDownList("NasalMaskTypeId", ViewData["maskList"] as IEnumerable<System.Web.Mvc.SelectListItem>, new { class = "ddl" })} </div> Note that I'm using the spark view engine so this DropDownList is getting rendered to the page via a loop. This means that the selected value of the dropdown list will change on each iteration of the loop. What I can't work out is how to pass in the value I want to set the DropDownList to based on the value that is currently being rendered to the screen.

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• Problem passing strings with PHP post

  - by andy

  Hi Guys, Basically I'm developing a (very) simple search engine. You can enter a search term and you are taken to the results page - which works fine. However on the results page, I have a button that will take you to the next 10 results: where $term is the $_POST['term'] value. echo "<input type='hidden' name='term' value='" . $term . "'>"; This causes the following problem with the term is for example "aidan's". When the next 10 button is clicked, the term becomes aidan\ and no further results are found. I am not doing anything to $term. I usually use Java, but am required to use PHP for this uni assignment! Any help would be greatly appreciated.

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• Does all SPWeb or SPSite instances get automatically disposed when console app process has ended?

  - by Janis Veinbergs

  We have Best practices on using disposable object in SharePoint. But i`m thinking - can I skip these when using Console Application? That's some code I want to execute once and after that process has finished. Do or don't SPSite and SPWeb's remain opened somwhere? Why i`m asking this? I just don't want to stress when using something like var lists = from web in site.AllWebs.Cast<SPWeb>() where web is meeting workspace && list is task list select list then do some stuff on lists etc. Some serious resource leak there because webs get opened, filtered and NOT closed. So should I worry in console app?

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• Excluding files from being deployed with Capistrano while still under version control with Git

  - by Jimmy Cuadra

  I want to start testing the JavaScript in my Rails apps with qUnit and I'm wondering how to keep the test JavaScript and test runner HTML page under version control (I'm using Git, of course) but keep them off the production server when I deploy the app with Capistrano. My first thought is to let Capistrano send all the code over as usual including the test files, and write a task to delete them at the end of the deployment process. This seems like sort of a hack, though. Is there a cleaner way to tell Capistrano to ignore certain parts of the repository when deploying?

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• Setting the ASP.NET version via MSBUILD

  - by dovholuk

  I am trying to create a new website on a remote server via msbuild (I like to call it "msdeploy"). I've downloaded and used the SDC tasks, the MSBuildExtension tasks and the MSBuildCommunity tasks but I simply can't get it right. I figure that WebDirectorySetting (from MSBuild.Community.Tasks.IIS) is my best bet but I can't find the right SettingName to pass. I'd like to use some sort of MSBuild task to accomplish this but maybe it just doesn't exist. Custom VBS or WMI are my last resort... Thanks

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• Your experience on using configuration & VCS tools

  - by smalldream

  I am doing my study's final year project and would like to do a little survey here. The topic is about configuration management and version control system for an industrial product (such as a piece of software, a furniture design, a car engine or even an aeroplane design etc...) 1.) What is you field of expertise (IT, engineering, manufactuing etc..) and what is the configuration management and version control system you use (previously or now) for your work? 2.) What is your opinion/comment (good, bad, what is it lack of or what can be improve etc...) about them? Much appreciated if you can include some real life examples for your opinion/comment. Of course you are welcome also if you simply wish to share your thought on the current configuration management and version control system in market. Thanks all in advance for your help.

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• MYSQL KEY-VALUE PAIR Viability

  - by Amit

  Hi, I am new to mysql and I am looking for some answers to the follwoing questions: a) Can mysql community server can be leveraged for a key-value pair type database.?? b) Which mysql engine is best suited for a key-value pair type database ?? c) Is Mysql cluster a must for horizontal scaling of key-value based datastore or can it be acheived using MySQL replication?? d) Are there any docs or whitepapers for best practices when implementiing a kv datastore on mysql?? e) Are there any known big implementations other that friendfeed doing kv pair using MYSQL?? Would really appreciate some advise from all you Mysql gurus out there !! Thanks In Advance, Amit

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• Unit testing "hybrid" WPF/Silverlight controls

  - by Alan Mendelevich

  I'm starting a new WPF/Silverlight custom control project and wanted to do unit testing on this one. However I'm a little confused about how to approach this. This control would be based on the same codebase for both WPF and Silverlight with minor forking using #ifs and partial classes to tame the differences. I guess I could write unit tests for WPF part with NUnit, MSTest, xUnit, etc. and for the Silverlight part with Silverlight Unit Test Framework but this doesn't sound very elegant to me. I'd have to either ignore testing identical code on one of the platforms and test only differing parts (which is not very trustworthy) or rewrite tests for 2 frameworks (which is annoying). Is this the right way to go? I'm wondering if there's some guidance, articles, tutorials out there on how to approach this task. Any pointers?

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• Solid FFmpeg wrapper for C#/.NET

  - by Lillemanden

  I have been searching the web for some time for a solid FFmpeg wrapper for C#/.NET. But I have yet to come up with something useful. I have found the following three projects, but all of them apears to be dead in early alpha stage. FFmpeg.NET ffmpeg-sharp FFLIB.NET So my question is if anyone knows of a wrapper project that is more mature? I am not looking for a full transcoding engine with job queues and more. Just a simple wrapper so I do not have to make a command line call and then parse the console output, but can make method calls and use eventlisteners for progress. And please feel free to mention any active projects, even if they are stil in the early stages.

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• ASP.NET MVC AuthorizeAttribute passing values to ActionMethod?

  - by subskii

  Hi everyone I'm only a newcomer to ASP.NET MVC and am not sure how to achieve a certain task the "right way". Essentially, I store the logged in userId in HttpContext.User.Identity and have written an EnhancedAuthorizeAttribute to perform some custom authorization. In the overriden OnAuthorization method, my domain model hits the database to ensure the current user id can access the passed in routeValue "BatchCode". The prototype is: ReviewGroup GetReviewGroupFromBatchCode(string batchCode); It will return null if the user can't access the ReviewGroup and the OnAuthorization then denies access. Now, I know the decorated action method will only get executed if OnAuthorization passes, but I don't want to hit the database a second time to get the ReviewGroup again. I am thinking of storing the ReviewGroup in HttpContext.Items["reviewGroup"] and accessing this from the controller at the moment. Is this a feasible solution, or am I on the wrong path? Thanks!

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• Rendering a view to a string in ASP.NET MVC 2

  - by Frank Rosario

  We need to render an ActionResult to a string to add pages to our internal search engine index. We settled on this solution to render to string. I've run into a problem with the ExecuteResult call used to process the View. Code Snippet: var oldController = controllerContext.RouteData.Values["controller"]; controllerContext.RouteData.Values["controller"] = typeof(TController).Name.Replace("Controller", ""); viewResult.ExecuteResult(controllerContext); // this line breaks I receive the following error: "Object reference not set to instance of object" error. I've confirmed viewResult is not null, so the exception has to be thrown internally in ExecuteResult. What could we be missing?

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• Download a file from one ASP.NET web application to other (given the credentials)

  - by Tom S.

  Hi everybody! Im working on a asp.net 3.5 web application (C#), where i have a file with some information that is updated frequently, and only few accounts can access to it (the application is using the asp.net authentication system, stored in a SQL database). My task is to parse that file, so i made a small parser (another web app) a to show the information in a more friendly way. However, everytime i want to parse it, i need to enter in the application with one of those accounts, download the file, put in the parser's folder. Is there any way to, given the username and password, download the file directly from the parser application and use that one? Thanks in advance

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• Modifying a model and texture mid-game code

  - by MicroPirate

  Just have a question for anyone out there who knows some sort of game engine pretty well. What I am trying to implement is some sort of script or code that will allow me to make a custom game character and textures mid-game. A few examples would be along the lines of changing facial expressions and body part positions in the game SecondLife. I don't really need a particular language, feel free to use your favorite, I'm just really looking for an example on how to go about this. Also I was wondering if there is anyway to combine textures for optimization; for example if i wanted to add a tattoo to a character midgame, is there any code that could combine his body texture and the tattoo texture into one texture to use (this way I can simply just render one texture per body.) Any tips would be appreciated, sorry if the question is a wee bit to vauge.

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• Obey the MediaBox/CropBox in PDF when using ghostscript to render a PDF to a png

  - by gordonwatts

  I've been using ghostscript to convert my single figure plots rendered in PDF to png: gswin32c -sDEVICE=png16m -r300x300 -sOutputFile=junk.png -dBATCH -dNOPAUSE Figure_001-a.pdf This works in the sense I get a png out and it contians the plot. But it contains a huge amount of white space as well (an example source image: http://cdsweb.cern.ch/record/1258681/files/Figure_001-a.pdf). If you view it in Acrobat you'll note there is no white space around the plot. If you use the above command line you'll find the plot is only about 1/3 of the space. When doing the same thing with an eps file I run into the same problem. However, there is the command-line parameter -dEPSCrop that one can pass to get the PS rendering engine to pay attention to the BoundingBox. I need the similar argument for rendering PDF's. I was not able to find it in docs (nor even the EPSCrop, actually).

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• PHP check if file exists on my server, based on a full URL

  - by stef

  I have an app that generates invoices in the form of PDF files stored in a directory on my server. Before mailing out this invoices I'd like to make sure that the URL (not server path) which I store in my DB does indeed point to a valid PDF file. Something could have gone wrong that wrote a value to that field in the db, but for example the filename is missing; meaning the file is not in the specified directory. AFAIK file_exists just checks server paths but not URL's. I could always store the server path too, or assemble it, but I'm wondering if i can do this check based on a full http url ending with a filename? EDIT: yeah CURL occurred to me too but doesn't that seem a bit heavy for such a simple task? Perhaps I should just store the server path too.

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• out of memory issue in asp .net mvc application

  - by SARAVAN

  Hi, I have got one wierd issue. I am working on an asp .net mvc application. I have a refresh button that build some data and view models in the controller code, and returns the partial view back. Well this refresh does work good the very first time. But when i try to click my refresh button again, a javascript alert comes saying "out of memory at line 56" I checked my task manager to see on whats happening. I ahve a 3GB memory and when this error alert shows up the used memory is 1.41 GB. Its normal usage as it looks like. But I dont know why it shows the javascript error alert. This problem happens in my local workstation where I am doing developement of this application. Any thoughts or comments to trouble shoot or solve this issue is appreciated. I ma using IE7.

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• Button selection in Android

  - by dreamhigh

  I have to create button options where each button performs specific task. So how to do the button selection. The code I tried is here. Button b1 b1.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v) { if(v.getId()==R.id.button1) { //do something } if(v.getId()==R.id.button2) { //do something } }); For single button function its working fine with this code. Button b1= (Button)findViewById(R.id.button1); b1.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v) { if(v.getId()==R.id.button1) { //do something } }});

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• Delete or comment out non-working JUnit tests?

  - by Chris Knight

  I'm currently building a CI build script for a legacy application. There are sporadic JUnit tests available and I will be integrating a JUnit execution of all tests into the CI build. However, I'm wondering what to do with the 100'ish failures I'm encountering in the non-maintained JUnit tests. Do I: 1) Comment them out as they appear to have reasonable, if unmaintained, business logic in them in the hopes that someone eventually uncomments them and fixes them 2) Delete them as its unlikely that anyone will fix them and the commented out code will only be ignored or be clutter for evermore 3) Track down those who have left this mess in my hands and whack them over the heads with the printouts of the code (which due to long-method smell will be sufficently suited to the task) while preaching the benefits of a well maintained and unit tested code base

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• How do you share your git repository with other developers?

  - by semi

  I have a central git repository that everyone pushes to for testing and integration, but it only is pushed to when features are 'ready'. While in the middle of a big task, developers frequently have many commits that stay on their harddrives. Sometimes in the middle of these projects I'd like to either see what another developer is doing, or show him how I've done something. I'd like to be able to tell another developer to just "pull my working copy" The only way I can think of is having everyone run ssh on their development machines and adding accounts or ssh keys for everyone, but this is a huge privacy and permissions nightmare, and seems like a lot of work to maintain. Should we just be pushing to that central repository in these cases? Should we be pushing after every local commit?

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• InstallShield 2009: Remove a dll (being used by explorer.exe for context menu) during uninstall with

  - by Samir

  Install Shield Premier 2009: Basic MSI Project I have a dll that is supposed to be removed during uninstall. But this dll is being used by explorer.exe, it is used for generating windows explorer context menus with their icons(same as the menu items, icons we see when we right click on any file/folder and see the WinRAR items, icons). Manually, I have to unregister the dll and close explorer.exe from task manager and again run explorer.exe. Then I can delete the dll. So from Install Shield how to delete this dll without any problem(as we see while uninstalling WinRAR or other software there is no problem no message boxes shown and the related context menu icons also removed).

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• Memory footprint of a parsed XML file in Classic ASP?

  - by Pete Duncanson

  Anyone know of a way to find out the amount of memory/size of a XMLDocument once it has parsed a XML file? I've been doing "beer mat" calculations so far but have been asked to come up with some more legit numbers through monitoring some how. I need to create about 1500 XML files (via FreeThreadedXMl-DOM object), which verge between 3-9K in size and store them in Application vars but our SysAdmin is worried about us gobbling up too much memory. Other than the crude method of booting up a fresh IIS instance and then loading everything in and monitoring before and after memory usage in Task Manager I can't think of a way of doing it with a bit more accuracy.

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