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• Symbol not found: _OBJC_CLASS_$_UIPopoverController

  - by Paul Peelen

  Hi, I am having problems with my universal app. I have set the Base SDK to iPhone 3.2 and set the target to 3.1. I have moved the files that are using the UIPopoverController to their own files and they shouldn't be loaded when loading the app on the iPhone. Still, when I build my app I get the following error when I build and debug to my device: dyld: Symbol not found: _OBJC_CLASS_$_UIPopoverController Referenced from: /var/mobile/Applications/B3B90643-92DC-4E5C-8B2F-83A42D6D57E0/citybikes.app/citybikes Expected in: /System/Library/Frameworks/UIKit.framework/UIKit in /var/mobile/Applications/B3B90643-92DC-4E5C-8B2F-83A42D6D57E0/citybikes.app/citybikes I really hope someone can help me. Best regards, Paul Peelen

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• Mavericks system Ruby and gem broken

  - by T1000

  When I tried to run ruby -v or gem -v (or any other command), I get: dyld: lazy symbol binding failed: Symbol not found: _ruby_run Referenced from: /usr/local/bin/ruby Expected in: /usr/lib/libruby.dylib dyld: Symbol not found: _ruby_run Referenced from: /usr/local/bin/ruby Expected in: /usr/lib/libruby.dylib This is after I ran rvm system to temporally switch to the system default Ruby. RVM is working fine, but I have a special need to install a gem to the system Ruby and I can't because of this problem. Does anyone know why? It seems to be some kind of link problem to Ruby, but I'm don't know how to solve this. I ran which ruby and it's at this point located in "/usr/local/bin/ruby". I checked the Ruby in "/usr/lib/" and it's pointing to my system Ruby: "../../System/Library/Frameworks/Ruby.framework/Versions/Current/usr/lib/ruby" Any help would be appreciated.

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• RIA Services versus WCF services: what is a difference

  - by Budda

  There are a lot of information how to build Silverlight application using .NET RIA services, but it isn't clear what is unique thing in RIA that is absent in WCF? Here are few topics that are talking around this topic: http://stackoverflow.com/questions/1647225/ria-services-versus-wcf-services http://stackoverflow.com/questions/945123/net-ria-services-wcf-services But they doesn't give an answer to the question. Sorry for the stupid question, but what does "RIA Services" layer bring into your app if you already have "Silverlight <-- WCF Service <-- Business Logic <-- Entity Framework Model <-- Database"? Authentication? Validation? Is it relly asset for you? At the moment the only thing I see: with RIA services usage you don't need to host WCF service manually and don't need to configure any references on the client side (clien side == Silverlight application). Probably I don't know some very useful features of the RIA Services? So could you please point me to the good doc for that? Many thanks.

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• iPhone SDK "loading" on Titanium Developer

  - by raulriera

  Hi, I have tried this question on the site of Titanium and several tweets to their account, but they either ignore me or refuse to answer. I want to start using their framework, but for some reason the iPhone SDK is always "loading" when in the "TEST & PACKAGE" tab. Have you guys found a fix for this? I have: Snow Leopard 10.6.3 Titanium Developer 1.2.1 iPhone SDK 3.2 All the certificates "blah blah" from Apple because I am able to test and deploy apps on my device using XCode. Help please :)

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• VS2010 Beta 2 > Setup Project > Prerequisites > Missing .NET 3.0

  - by Adam Kane

  Hello, In Visual Studio 2010 Beta 2, in a Setup project, in Prerequisites, there's no option to include the .NET Framework 3.0 prerequisite. How do I change things so that it is an available option? My goal is to create an .msi installer that is launched by a Setup.exe. The Setup.exe should install .NET 3.0 if it's not there. The application that I'm installing uses .NET 3.0 Note: I've tried clicking the "Check Microsoft Update for more redistributable components", but .NET 3.0 wasn't there. Thanks! Adam

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• SelectionChanged event binding in Silverlight+MVVM-Light

  - by Budda

  The handler of the "SelectionChanged" event of the ComboBox control has the following signature: void SelectionChangedMethod(object sender, SelectionChangedEventArgs e) How to bind to that property under Silverlight 4 and MVVM-Light to the corresponding method of the ViewModel object? As far as I know, I need to do something like this: public void Changed(Object obj, SelectionChangedEventArgs e) { // .... implement logic here } RelayCommand<Object, SelectionChangedEventArgs> _command; public ICommand ObjectSelectionChanged { get { if (_command == null) { _command = new RelayCommand<Object, SelectionChangedEventArgs>(Changed); } return _command; } } The problem is that RelayCommand class in the MVVM-Light framework doesn't support 2 generic parameters... Is there any solution or workaround for this case? How bind control event to the method with 2 parameters?

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• Problem during RIA authentication

  - by VexXtreme

  Hi I've built an authentication service in RIA that inherits from DomainService and IAuthenticate. The problem is following: When LoginOperation fails (loginOperation.LoginSuccess is false) due to wrong credentials, everything is ok and it is reported to the user. However, when login succeeds, I get throw a really weird exception: {System.ServiceModel.DomainServices.Client.DomainOperationException: Load operation failed for query 'Login'. Value cannot be null. Parameter name: validationErrors --- System.ArgumentNullException: Value cannot be null. Parameter name: validationErrors at System.ServiceModel.DomainServices.Client.QueryCompletedResult..ctor(IEnumerable1 entities, IEnumerable1 includedEntities, Int32 totalCount, IEnumerable`1 validationErrors) I don't really understand this. What is IEnumerable validationErrors, where does it appear and why does it have to be != null ? This started happening after I ported my authentication services from Nhibernate to Entity Framework. I've even tried googling this exception and apparently I'm the only one with this problem so far. Any help would be greatly appreciated.

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• Enums for Build Flavor and Build Platform in Custom TFS 2010 Build Activities

  - by Ben Hughes

  Are there enums available in the .NET framework that have values for build flavor (Debug, Release) and build platform (Any CPU, x86, x64 etc)? I haven't been able to find anything on MSDN or Google. It seems unnecessarily cumbersome to create my own. For context: I'm creating a custom TFS2010 workflow activity that requires flavor and platform info. Currently these are entered in the build definition as free-from strings. The default TFS build template has a dialog box (accessible in the build definition editor under Process\1.Required\Items to Build\Configurations to Build) that provides drop-down menus with this info pre-populated. I'd like to do something similar.

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• Ruby on Rails vs Grails vs. Spring ROO vs. Spring App

  - by lizdev

  Hi, I'm planning on writing a simple web application that will be used by lots of users (as complicated as a simple bookmarking app) and I'm trying to decide which framework/language to use. I'm very experienced with Spring/Hibernate and Java in general but new to both Grails and RoR (and Spring ROO). The only reason I'm considering RoR is because Java hosting is MUCH more expensive than RoR hosting (which is supported by almost any hosting vendor for 5$ per month). Assuming the price wasn't an issue, which one of the frameworks/languages mentioned above would you recommend for a Java developer (who knows how to configure Spring/Hibernate etc.)? I'm afraid that by using RoR I won't be able to easily support many users who are using the website at the same time. thanks

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• Visual Studio 2010 randomly crashes when editing XAML

  - by Catalin DICU

  Visual Studio 2010 randomly crashes when editing XAML in a WPF application. I'm running it on Win 7 fully updated. The installed extensions/addons are: Resharper PowerCommands The crash log is: Faulting application name: devenv.exe, version: 10.0.30319.1, time stamp: 0x4ba1fab3 Faulting module name: clr.dll, version: 4.0.30319.1, time stamp: 0x4ba1d9ef Exception code: 0xc0000005 Fault offset: 0x0017f146 Faulting process id: 0xd78 Faulting application start time: 0x01caedc7341e18e3 Faulting application path: C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe Faulting module path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Anyone experiencing this ? And maybe found an explication ?

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• Installing flex on Mac Parallels

  - by Ali Syed

  Hello folks, I am trying to install Flex 3 on my Windows 7 Virtual machine (parallels desktop) on my Mac Pro. The problem seems to be some sort of conflict between the copy of Flex 3 Builder installed on Mac OS X. The installer tries to install Flex in x:/Program Files/Adobe/Flex Builder 3/ but since Parallels Desktop connects all directories, there resides the Flex Builder 3 installation of MAC. I get this error Log: !SESSION 2010-04-22 16:09:23.031 ----------------------------------------------- eclipse.buildId=unknown java.version=1.5.0_11 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=de_DE Framework arguments: -application org.eclipse.update.core.standaloneUpdate -command install -from file:\C:\Program Files\Adobe\Flex Builder 3 Windose\com.adobe.flexbuilder.update.site/ -featureId com.adobe.flexbuilder.feature.standalone -version 3.0.214193 Command-line arguments: -application org.eclipse.update.core.standaloneUpdate -command install -from file:\C:\Program Files\Adobe\Flex Builder 3 Windose\com.adobe.flexbuilder.update.site/ -featureId com.adobe.flexbuilder.feature.standalone -version 3.0.214193 !ENTRY org.eclipse.update.core 4 0 2010-04-22 16:09:29.187 !MESSAGE Cannot install featurecom.adobe.flexbuilder.feature.standalone 3.0.214193

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• Enable PDO for PHP5 on CentOS5 where PHP is configured as '--disable-pdo'

  - by jakenoble

  Hi I have been given access to a CentOS5 machine by my client for their new site which uses Zend Framework. phpinfo() states in Configure Command that PDO is disabled ('--disable-pdo'). How can enable it? Do I need to recompile PHP5 to enable it? I have tried adding 'extension=pdo.so' in php.ini and restarting Apache, but this didn't work. It would also be nice to understand what '--disable-pdo' actaully means, does it mean it's not compiled into PHP or does it mean its just not enabled? Thanks for your time

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• Is it correct to say that an ASP .NET MVC application is an HTTPModule?

  - by stormwild

  I just wanted to clarify my understanding of ASP .NET MVC (current version is 4). I was reading this article on How does ASP.NET MVC work? So, how does ASP.NET know how to route requests to MVC? The answer lies in web.config. There is a new http module added to modules collection in ASP.NET MVC projects So basically an mvc application is implemented as an HTTPModule or at least the url routing portion of an mvc app? Would it be possible for one to create and register a custom routing module and then possibly create their own micro mvc framework like Sinatra in Ruby or Slim in PHP?

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• Visual C# 2010 MSVCR100.dll missing when opening a project...tried EVERYTHING!

  - by dlopeztt

  I installed Visual C# 2010 Beta 2 and I get this error every time I open a project: 'This application has failed to start because MSVCR100.dll was not found. Reinstalling the application may fix the problem' I uninstalled every VC runtime, .NET framework, C# on this computer. Then reinstalled Visual C# 2010 and the install went smoothly. Then I ran Microsoft Update. Still the same problem when I open a project. The project was created with VC# 2008. I'm running Windows 7 64-bit. Any idea how to fix this? I could only find people with the same problem while trying to Uninstall VS2010 and use a previous version.

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• iPhone: Using static library in an application crashes the device but not the iphone simulator

  - by spin-docta

  I have a library I made, and now I want to utilize it in an application. I've believe I've properly linked to the library. Here are all the things I've done: Set the header search path Set other linker flags to "-ObjC" Added the static library xcode project Made sure the lib.a was listed as a framework target Added the library as a direct dependency Like I said in the title, I've successfully run the app with the static library in the simulator. Once I try testing the app using the device, it crashes the second it has to use a function from the library: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSDate firstOfCurrentMonth]: unrecognized selector sent to class 0x3841bb44' 2009-10-10 12:45:31.159 Basement[2372:207] Stack:

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• Do PHP Framworks Speed Up the Development Process?

  - by Jacob

  I recently started working for a web firm as a freelancer taking my hobby of coding in PHP to a career level, and since then I have been overwhelmed by the amount of work that needs to be done within short time frames. The problem isn't being able to do what is asked, but being able to do it all as quickly as is needed of me. I never used any PHP frameworks, but if I started using one, would that speed up the entire development process? If so, how drastically? Also which framework would be best for my purpose? If it matters, what I do is mostly build back end cms's and tie that with front end functionality for small business client sites.

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• Error: Expected specifier-qualifier-list before ... in XCode Core Data

  - by Doron Katz

  Hi guys, I keep on getting this error "error: expected specifier-qualifier-list for core data code im working with, in the app delegate. Now when i get this error and about 40 other errors relating to managedobjectcontext etc, i thought maybe the library needs to be imported. Now i havent done this before, but i went to Frameworks group and add existing frameworks and it added CoreData.framework. I re-build and it still came up with the error. Do I need to import anything in the headers explicitly or is there some other step i need to do? Thanks

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• Servlets vs Spring MVC??

  - by Jegan

  Hi All, I very often come across this question of why we have got lots of web frameworks addressing the same or similar drawbacks. when looking deeply, i also have given thought on why JSP / Servlets is not being used after the other web frameworks (like Struts, Spring MVC etc) have shown their existence? Is it because, the latest web frameworks does most of the things on its own? provides extensive features that is not available with Servlet / JSP? or the Servlet / JSP is impotent to deliver what latest framework does? Any help in the form of responses or resources is greatly appreciated. ~ JK

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• How to find from GUI whether Client Side scripting or server side scripting is running

  - by rockbala

  We have a GUI which runs on ASP.NET 2.0 framework (Client-Server model). From the support perspective how can one find whether the pages which are opening on GUI at any point of time is a server side scripting or Client side scripting. The reason why I ask this is because I understand that some of the codes are executed by the browser such as Javascript. So, if there are such scripts which are handled by the client browser, how can one find out that it is the Client side scripting which is running at that moment. Thanks for your answers in advance.

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• When is Visual Studio 2010 expected to RTM?

  - by Chris Pietschmann

  Microsoft originally slated the final release build for April 12, 2010. Somasegar said the Visual Studio 2010 and .NET Framework 4 releases will now be pushed back "a few weeks." I know the version / product name says "2010", but that doesn't necessarily mean that it will RTM in 2010. After all VS'2008 RTM'd in November 2007. The last Beta of VS'2008 came out in July 2007, and it RTM'd in November. So based on the previous version that places VS'2010 to RTM in September 2010 at the very earliest since the first Beta just came out in May. Anyone have any other speculations?

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• How To Create An ASP.NET Designer Host

  - by Zuhaib

  I have been asked to build an application where I can drag and drop few WebControls onto the WebPage designer surface. So far I have read some articles on .NET Framework Design-Time architecture, like, MSDN Article: Hosting WinForms Designers, Developer Function Article etc. But I can't a find a way to host WebForms designer. The only open source implementation that I could find was Mono Develop ASP.NET Visual Designer. But in mono they have used GTK# & Gecko etc to host the designer. I can't find a way to do the same using WinForms. Please suggest me what should I do. Give me some pointers. Should I go ahead and implement it using GTK# and Gecko? PS: My requirement is not very huge. I need just a way to drag and drop simple web controls and save the page.

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• Why does CLLocationManager returns null locations on the iphone SDK 4 beta in the Simulator?

  - by Rigo Vides

  Hi everyone, I have this piece of code: - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { NSLog(@"Manager did update location!!"); self.currentLocation = newLocation.description; } I have this code inside a class that conforms to the CLLocationManagerDelegate. I tested earlier in sdk 3.0 and works nice (on both simulator and device). I'm testing this class on the SDK 4, in the simulator, but it gives null as a newLocation. I can't even get the NSLog for the first call. I checked other app where I use the location framework and it doesn't work either. I implemented the locationManager:didFailWithError: message also, wich is never called. Can anyone please confirm that the simulator can't do any CLLocationManager capabilities? (a link where the bug is reported as a known issue will be awesome). Is there a way to fix this? Thanks in advance.

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• XNA Class Design with Structs

  - by Nate Bross

  I'm wondering how you'd recommend designin a class, given the fact that XNA Framework uses Struct all over the place? For example, a spite class, which may require a Vector2 and a Rectangle (both defined as Struct) to be accessed outside of the class. The issue come in when you try to write code like this: class Item { public Vetor2 Position {get; set;} public Item() { Position = new Vector2(5,5); } } Item i = new Item(); i.Positon.X = 20; // fails with error 'Cannot modify the return value of Item because it is not a variable.' // you must write code like this var pos = i.Position; pos.X++; i.Position = pos; The second option compiles and works, but it is just butt ugly. Is there a better way?

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• OData and custom WCF WebGet methods

  - by reinier

  I've created an OData endpoint (using entity framework, WCF data service) and added a custom test WebGet test method like so: [WebGet(UriTemplate = "{text}")] public IQueryable<string> SplitString(string text) { if (text == null) throw new DataServiceException("text not specified"); var result = (from s in text.Split('-') orderby s select s); return result.AsQueryable(); } and a config line: config.SetServiceOperationAccessRule("SplitString", ServiceOperationRights.All); However, no matter how I specify the url, I can not get the text param to be filled out. (it is always null). so: http://localhost/myservice.svc/SplitString/testtext does not work. What is the correct url format (or UriTemplate) one should use? The only examples I found of odata and WebGet only have an example method which doesn't have any parameters.

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• iPhone: ASIFormDataRequest Returns NULL from PHP Server

  - by meetS

  Hi, I have PHP script link, which responds YES or NO when we set post userName and emailID. I have used ASI framework. When I try to connect with the following code, I get a null return. NSURL *url = [NSURL URLWithString:@"https://abc.com/abctest/registration.php"]; ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:url]; [request setPostValue:@"[email protected]" forKey:@"email"]; [request setPostValue:@"pqr" forKey:@"userName"]; [request start]; NSError *error = [request error]; if (!error) { NSString *response = [request responseString]; printf("\n\n\n Responce %s",[response UTF8String]); response = [response stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; if ([response isEqualToString:@"YES"]) { printf("\n\n YES"); } } What am I doing wrong?

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