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Search found 1937 results on 78 pages for 'tom harvey'.

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• What is the motivation behind "Use Extension Methods Sparingly?"

  - by Robert Harvey

  I find them a very natural way to extend existing classes, especially when you just need to "spot-weld" some functionality onto an existing class. Microsoft says, "In general, we recommend that you implement extension methods sparingly and only when you have to." And yet extension methods form the foundation of Linq; in fact, Linq was the reason extension methods were created. Are there specific design criteria where using extension methods are perferred over inheritance or composition? Under what criteria are they discouraged?

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• Symfony: How to hide form fields from display and then set values for them in the action class

  - by Tom

  I am fairly new to symfony and I have 2 fields relating to my table "Pages"; created_by and updated_by. These are related to the users table (sfGuardUser) as foreign keys. I want these to be hidden from the edit/new forms so I have set up the generator.yml file to not display these fields: form: display: General: [name, template_id] Meta: [meta_title, meta_description, meta_keywords] Now I need to set the fields on the save. I have been searching for how to do this all day and tried a hundred methods. The method I have got working is this, in the actions class: protected function processForm(sfWebRequest $request, sfForm $form) { $form_params = $request->getParameter($form->getName()); $form_params['updated_by'] = $this->getUser()->getGuardUser()->getId(); if ($form->getObject()->isNew()) $form_params['created_by'] = $this->getUser()->getGuardUser()->getId(); $form->bind($form_params, $request->getFiles($form->getName())); So this works. But I get the feeling that ideally I shouldnt be modifying the web request, but instead modifying the form/object directly. However I havent had any success with things like: $form->getObject()->setUpdatedBy($this->getUser()->getGuardUser()); If anyone could offer any advice on the best ways about solving this type of problem I would be very grateful. Thanks, Tom

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• call addsubview again causes slowdown

  - by Tom

  hi guys, i am writing a little music-game for the iphone. I am almost done, this is the only issue which keeps me from rolling it out. any help to solve this is much appreciated. this is what i do: at my appDelegate I add my menu-view-screen to the window. the menu-view-screen acts as a container and controls which view gets presented to the user. means, on the menu-view-screen I got 4 buttons (new game, options, faq, highscore). when the user clicks on a button something as this happens: if (self.gameViewController == nil) { GameViewController *viewController = [[GameViewController alloc] initWithNibName:@"GameViewController" bundle:nil]; self.gameViewController = viewController; [viewController release]; } [self.view addSubview:self.gameViewController.view]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleSwitchViewNotificationFromGameView:) name:@"SwitchView" object:gameViewController]; when the user returns to the menu, this piece of code gets executed: [[NSNotificationCenter defaultCenter] removeObserver:self]; [self.gameViewController viewWillDisappear:YES]; [self.gameViewController.view removeFromSuperview]; this works fine for all screens but not for the gamescreen(well this is the only one with heaps of user-interaction) means the responsiveness of the iphone(when playing tones) gets really slow. The performance is fine when I display the gameview for the first time. it starts getting slower as soon as I add it to the menu-views-container-subviews again (addsubview) (basically open up a new game) any ideas what causes(or to get around) this? thanks heaps Best regards Tom

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• How to receive stdio and error_logger messages on a remote shell

  - by Dale Harvey

  After spending a good while getting rb to work on a remote shell, I would like to get stdio / error logger messages on a remote shell, I have dug around changing group_leaders but it would seem to require changing the group_leader of all the running process, and my experiments have found that to be pretty unstable.

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• UpdateAllWindows() from within a worker thread?

  - by Harvey

  I have a worker thread in a class that is owned by a ChildView. (I intend to move this to the Doc eventually.) When the worker thread completes a task I want all the views to be updated. How can I make a call to tell the Doc to issue an UpdateAllViews()? Or is there a better approach? Thank you.

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• Why is my Extension Method not showing up in my test class?

  - by Robert Harvey

  I created an extension method called HasContentPermission on the System.Security.Principal.IIdentity interface: namespace System.Security.Principal { public static bool HasContentPermission (this IIdentity itentity, int contentID) { // I do stuff here return result; } } And I call it like this: bool hasPermission = User.Identity.HasPermission(contentID); Works like a charm. Now I want to unit test it. To do that, all I really need to do is call the extension method directly, so: using System.Security.Principal; namespace MyUnitTests { [TestMethod] public void HasContentPermission_PermissionRecordExists_ReturnsTrue() { IIdentity identity; bool result = identity.HasContentPermission(... But HasContentPermission won't intellisense. I tried creating a stub class that inherits from IIdentity, but that didn't work either. Why? Or am I going about this the wrong way?

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• How do I determine what assembly a namespace is in?

  - by Robert Harvey

  The MSDN documentation doesn't generally specify the assembly a namespace is in, so there's no easy way to add the necessary assembly reference. NOTE: I am using MonoDevelop, so right-click, resolve is not an option.

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• Java Concurrency : Volatile vs final in "cascaded" variables?

  - by Tom

  Hello Experts, is final Map<Integer,Map<String,Integer>> status = new ConcurrentHashMap<Integer, Map<String,Integer>>(); Map<Integer,Map<String,Integer>> statusInner = new ConcurrentHashMap<Integer, Map<String,Integer>>(); status.put(key,statusInner); the same as volatile Map<Integer,Map<String,Integer>> status = new ConcurrentHashMap<Integer, Map<String,Integer>>(); Map<Integer,Map<String,Integer>> statusInner = new ConcurrentHashMap<Integer, Map<String,Integer>>(); status.put(key,statusInner); in case the inner Map is accessed by different Threads? or is even something like this required: volatile Map<Integer,Map<String,Integer>> status = new ConcurrentHashMap<Integer, Map<String,Integer>>(); volatile Map<Integer,Map<String,Integer>> statusInner = new ConcurrentHashMap<Integer, Map<String,Integer>>(); status.put(key,statusInner); In case the it is NOT a "cascaded" map, final and volatile have in the end the same effect of making shure that all threads see always the correct contents of the Map... But what happens if the Map iteself contains a map, as in the example... How do I make shure that the inner Map is correctly "Memory barriered"? Tanks! Tom

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• Paste or Drop, copy data and release source?

  - by Harvey

  I have an MFC DocView SDI App that receives data from either the clipboard or drag and drop. The data is in either CF_HDROP or CF_TEXT format. I have a COleDropTarget derived CMyDropTarget member m_dropTarget of my CMainFrame class. I have two member functions of CMyDropTarget; OnDrop(...) and OnPaste() which each call another member function PostData(pDataObject). I want to get a copy of the pDataObject from either CF_... format and PostMessage to my CmainFrame which will call a member of my Doc class. What is a simple way of getting a copy of the global data to pass with the PostMessage() so that I can get the drop source released before I get around to processing the global data? NOTE that they are always treated as a copy of the source data, so there is no need for the source to delete anything when the operation is done. Or perhaps a better way of asking the question is: How can I release the Drop source before processing the global data? Can I pass the HGLOBAL via PostMessage and still release the source without making a copy of it?

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• Custom Solr sorting

  - by Tom

  Hello everyone, I've been asked to do an evaluation of Solr as an alternative for a commercial search engine. The application now has a very particular way of sorting results using something called "buckets". I'll try to explain with a bit of details: In the interface they have 2 fields: "what" and "where". Both fields are actually sets of fields (what = category, name, contact info... and where= country, state, region, city...) so the copyfield feature of Solr immediately comes to mind. Now based on the field generated the actual match the result should end up in a specific bucket. In particular the first bucket contains all the result documents that have an exact match on the category field, in the second bucket all exact matches on name, the third partial matches on category, the fourth partial matches on name, the fifth matches on contact info etc... Then within each of those first tier buckets all results are placed in second tier buckets depending on what location was matched: city, then region, then province and so on. To even complicate things more there is also a third tier bucket where results are placed according to the value of a ranking field: all documents with the value 1 in the ranking field go in bucket 1 and so on. And finally results should be randomized in the third tier bucket... On top of this they obviously want support for facets and paging. My apologies for the long mail but I would greatly appreciate feedback and/or suggestions. I'm aware that this that this is a very particular problem but everything that points me in the right direction is helpful. Cheers, Tom

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• Possible Performance Considerations using Linq to SQL Repositories

  - by Robert Harvey

  I have an ASP.NET MVC application that uses Linq to SQL repositories for all interactions with the database. To deal with data security, I do trimming to filter data to only those items to which the user has access. This occurs in several places: Data in list views Links in a menu bar A treeview on the left hand side containing links to content Role-based security A special security attribute, inheriting from AuthorizeAttribute, that implements content-based authorization on every controller method. Each of these places instantiates a repository, which opens a Linq to Sql DataContext and accesses the database. So, by my count, each request for a page access opens at least six separate Linq to SQL DataContexts. Should I be concerned about this from a performance perspective, and if so, what can be done to mitigate it?

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• Managing multiple customer databases in ASP.NET MVC application

  - by Robert Harvey

  I am building an application that requires separate SQL Server databases for each customer. To achieve this, I need to be able to create a new customer folder, put a copy of a prototype database in the folder, change the name of the database, and attach it as a new "database instance" to SQL Server. The prototype database contains all of the required table, field and index definitions, but no data records. I will be using SMO to manage attaching, detaching and renaming the databases. In the process of creating the prototype database, I tried attaching a copy of the database (companion .MDF, .LDF pair) to SQL Server, using Sql Server Management Studio, and discovered that SSMS expects the database to reside in c:\program files\Microsoft SQL Server\MSSQL.1\MSSQL\DATA\MyDatabaseName.MDF Is this a "feature" of SQL Server? Is there a way to manage individual databases in separate directories? Or am I going to have to put all of the customer databases in the same directory? (I was hoping for a little better control than this). NOTE: I am currently using SQL Server Express, but for testing purposes only. The production database will be SQL Server 2008, Enterprise version. So "User Instances" are not an option.

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• Howto find unmarked strings with gettext?

  - by Harvey

  Does gettext have a way to warn me about strings that have not been wrapped in _() or N_()? Basically is there a way to get a list of all strings that do NOT match the keywords used by xgettext. So, I want: ! xgettext source_code

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• Creating a standalone ASP.NET MVC application for Windows XP

  - by Robert Harvey

  Is there a way to create an installable (ideally XCopy installable) version of an ASP.NET MVC application that will run in a standalone fashion on a Windows XP machine? I don't mind installing SQL Server Express for this purpose, so I guess the question boils down to this: Can the Cassini web server that comes with Visual Studio 2008 be bundled with the application? Or are there other options? NOTE: The installation is for demo purposes only, so there are no licensing problems. Also, I am suggesting Cassini because I don't know of a way to install IIS7 on Windows XP. I can't do major hackage on the registry to get this to work.

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• What's the right tool for this job in Google Spreadsheets?

  - by Daniel Harvey

  Is it possible to nest simple programs within a Google doc spreadsheet, similar to how you would w/Basic in Excel? Or alternatively a simple = syntax using regex, if there is a way to do that in google docs? I want to take a list of multiple names(name1, name2, name3) in a single cell from across multiple identical sheets and transpose them to another sheet within the same spreadsheet, check for duplicates and ignore capitals, etc. Is there a way to do this?

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• How do you manage the namespaces of your extension methods?

  - by Robert Harvey

  Do you use a global, catchall namespace for all of your extension methods, or do you put the extension methods in the same namespace as the class(es) they extend? Or do you use some other method, like an application or library-specific namespace? EDIT: I ask because I have a need to extend System.Security.Principal.IIdentity, and putting the extension method in the System.Security.Principal namespace seems to make sense, but I've never seen it done this way.

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• Are today's young programmers getting wrapped around the axle with patterns and practices?

  - by Robert Harvey

  Recently I have noticed a number of questions on SO that look something like this: I am writing a small program to keep a list of the songs that I keep on my ipod. I'm thinking about writing it as a 3-tier MVC Ruby on Rails web application with TDD, DDD and IOC, using a factory pattern to create the classes and a singleton to store my application settings. Do you think I'm taking the right approach? Do you think that we're handing novice programmers a very sharp knife and telling them, "Don't cut yourself with this"? NOTE: Despite the humorous tone, this is a serious (and programming-related) question.

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• Modifying text files and executing programs with command line parameters in c# or c++ on Linux

  - by Robert Harvey

  I have a need to create a utility in Suze Linux. The utility will make modifications to some text files, and then use the information in those text files to program a device in the computer using a different executable which accepts command line parameters. I am fluent in c#, but have never worked with Linux. Should I take the time to learn Gnu C++ to do this, or install Mono? How would I execute the programming utility and pass it command line parameters?

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• OpenID PAM module

  - by Harvey Kwok

  I am looking for a PAM module that can use OpenID to do the authentication. My idea is that I want to logon my Linux box using my gmail account and password. I found there is a open source project in Google Code which seems to be doing the things I want but I don't see any code available for download. I saw there are so many examples or implementations but they are all about web apps. Is there any non-web based OpenID applications in the world? Is it technically possible to make a non-web based OpenID application? I naively think that it should be possible. I can emulate whatever packets the browser send out to the OpenID provider and get back the result. As long as my Linux box is connected to the Internet, I should be able to use my OpenID to login. Appreciate any comments, suggestions or pointers on how to make an OpenID PAM module. Thanks!

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• How to detect if a certain range resides (partly) within an other range?

  - by Tom

  Lets say I've got two squares and I know their positions, a red and blue square: redTopX; redTopY; redBotX; redBotY; blueTopX; blueTopY; blueBotX; blueBotY; Now, I want to check if square blue resides (partly) within (or around) square red. This can happen in a lot of situations, as you can see in this image I created to illustrate my situation better: Note that there's always only one blue and one red square, I just added multiple so I didn't have to redraw 18 times. My original logic was simple, I'd check all corners of square blue and see if any of them are inside square red: if ( ((redTopX >= blueTopX) && (redTopY >= blueTopY) && (redTopX <= blueBotX) && (redTopY <= blueBotY)) || //top left ((redBotX >= blueTopX) && (redTopY >= blueTopY) && (redBotX <= blueBotX) && (redTopY <= blueBotY)) || //top right ((redTopX >= blueTopX) && (redBotY >= blueTopY) && (redTopX <= blueBotX) && (redBotY <= blueBotY)) || //bottom left ((redBotX >= blueTopX) && (redBotY >= blueTopY) && (redBotX <= blueBotX) && (redBotY <= blueBotY)) //bottom right ) { //blue resides in red } Unfortunately, there are a couple of flaws in this logic. For example, what if red surrounds blue (like in situation 1)? I thought this would be pretty easy but am having trouble coming up with a good way of covering all these situations.. can anyone help me out here? Regards, Tom

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• How do I pass Url Parameters on a POST?

  - by Robert Harvey

  I have a controller method with the following signature: [AcceptVerbs(HttpVerbs.Post)] public ActionResult UpdateValues(int id, MyViewModel[] array) { } The id is normally picked up as part of the Url on other GET controller methods (I have a working route that does this) I am successfully passing the array1 from the form in my view to the controller method, but how do I also put the id onto my Url so that when the user clicks the Submit button, the controller method will pick up the ID?

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• How to make MainFrame window (or App as a whole) a COleDropTarget?

  - by Harvey

  How can I make my MFC Doc/View App an COleDropTarget for dropping text (NOT files) onto anywhere on the app, not just the view window?

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• accessing variable sheet ranges within Google spreadsheet?

  - by Daniel Harvey

  I've been trying to keep this little project entirely within Google docs, but I may have hit a wall. The spreadsheet is being used as a way for multiple users to record individual events with a Template they duplicate. I want to be able to compile a list of names of those attended onto a "report" sheet from all of the unique sheets, which should be after a certain sheet index [3] to [infinite]. Is this sort of variable sheet range possible in Google spreadsheets or do I need to go to the API to get this accomplished?

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• Are there any C++ style and/or standard example files available?

  - by Harvey

  While there are lots of questions about coding style, beautifying, and enforcement, I haven't found any example C++ files that are used as a quick reference for style. The file should be one or two pages long and exemplify a given coding standard/style. For example, the Google C++ Style Guide is a great reference, but I think a one to two page piece of code written in their style pinned to a wall would be more useful in day-to-day use. Do any of these already exist?

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• Best way for an external (remote) graphics designer to style ASP.NET MVC 4 app?

  - by Tom K

  My customer has his own graphics designer he wants to use to style his web application we're building in ASP.NET MVC 4. Our solution is in Bitbucket, but if he can't run it what choices do we have? I doubt he uses Visual Studio 2012. One idea is for us to publish to our solution to a file system, send it to him, have him create a local IIS website on his machine (assuming he isn't using a Mac). Mocking data or pointing to a test SQL in Azure isn't a problem. Then he can make changes to .css and .cshtml files. Will this even work? The point is that he needs to be able to test his changes. I know he can modify the views and just check-in. But he needs to deliver a working design. So it seems inefficient. The graphics designer will have access to our test site so he can see how it works, what data we have and fields. Another idea is for him to build a static mock site using just HTML/CSS. Later I'd integrate his styles into customer's solution, split his html into partial views which we use and add Razor syntax. Again, we'd like to leverage graphics designer for all of this. Is there a best practice documented around this subject? How do other teams deal with this situation?

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