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  • Calling Property Methods from the e.PropertyName property

    - by user275561
    void TheSettings_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) { var settings = IsolatedStorageSettings.ApplicationSettings[StorageSettings] as Dictionary<string, string>; settings[e.PropertyName]= //call the method that has the same property name to get what the value is LoadData(); } Here is What I am trying to do. This is for a Windows Phone 7 series App. I am trying to determine what values got changed when the user changes the settings on the settings page and just save that.

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  • C# delegate or Func for 'all methods'?

    - by Michel
    Hi, i've read something about Func's and delegates and that they can help you to pass a method as a parameter. Now i have a cachingservice, and it has this declaration: public static void AddToCache<T>(T model, double millisecs, string cacheId) where T : class public static T GetFromCache<T>(string cacheId) where T : class So in a place where i want to cache some data, i check if it exists in the cache (with GetFromCache) and if not, get the data from somewhere, and the add it to the cache (with AddToCache) Now i want to extend the AddToCache method with a parameter, which is the class+method to call to get the data Then the declaration would be like this public static void AddToCache<T>(T model, double millisecs, string cacheId, Func/Delegate methode) where T : class Then this method could check wether the cache has data or not, and if not, get the data itself via the method it got provided. Then in the calling code i could say: AddToCache<Person>(p, 10000, "Person", new PersonService().GetPersonById(1)); AddToCache<Advert>(a, 100000, "Advert", new AdvertService().GetAdverts(3)); What i want to achieve is that the 'if cache is empty get data and add to cache' logic is placed on only one place. I hope this makes sense :) Oh, by the way, the question is: is this possible?

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  • pushViewController for same instance - only for animation purpose

    - by techastute
    Hi there, I am having single table view in a view controller. That table view lists the countries first. When I click on a country(row), it has to push the same view controller's view with cities under that country. I need to see the slide animation, which we usally get while pushing views in navigator. Is it possible to use the pushViewController for the same view controller by calling the tableView reloadData with city data (This should happen when country is selected) ? Please let me know whether it is possible.. Thanks in advance.. Raj

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  • Cast an instance of a class to a @protocol in Objective-C

    - by Ford
    I have an object (a UIViewController) which may or may not conform to a protocol I've defined. I know I can determine if the object conforms to the protocol, then safely call the method: if([self.myViewController conformsToProtocol:@protocol(MyProtocol)]) { [self.myViewController protocolMethod]; // <-- warning here } However, XCode shows a warning: warning 'UIViewController' may not respond to '-protocolMethod' What's the right way to prevent this warning? I can't seem to cast self.myViewController as a MyProtocol class. Update Andy's answer below is close, but includes an unneccesary '*'. The following works: [(id<MyProtocol>)self.myViewController protocolMethod];

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  • Calling methods within same JavaScript class [Prototype]

    - by eldeejay
    I've created a class in Javscript using the prototype Class.Create complete with the initialize function and a few other functions. However, in one of my functions I want to reference another function in the same class, but cannot seem to get the syntax correct. e.g. var sampleClass = Class.create({ initialize: function(){ //do the init work here }, functionA: function(){ //do some more stuff here } functionB: function(){ //Do some stuff functionA() } } I've tried calling functionA() , this.functionA() but nothing works I just get errors. I know how to call the functions externally when the class has been instantiated, but not reference a function from within the class itself. Thanks

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  • Scan from last instance of character to end of string using NSScanner

    - by Virgil Disgr4ce
    Given a string such as: "new/path - path/path/03 - filename.ext", how can I use NSScanner (or any other approach) to return the substring from the last "/" to the end of the string, i.e., "03 - filename.ext"? The code I've been trying to start with is: while ([fileScanner isAtEnd] == NO){ slashPresent = [fileScanner scanUpToString:@"/" intoString:NULL]; if (slashPresent == YES) { [fileScanner scanString:@"/" intoString:NULL]; lastPosition = [fileScanner scanLocation]; } NSLog(@"fileScanner position: %d", [fileScanner scanLocation]); NSLog(@"lastPosition: %d", lastPosition); } ...and this results in a seg fault after scanning to the end of the string! I'm not sure why this isn't working. Ideas? Thanks in advance!

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  • iPhone OS: Get a list of methods and variables from anonymous object

    - by ChrisOPeterson
    I am building my first iPhone/Obj-c app and I have a large amount of data-holding subclasses that I am passing into a cite function. To the cite function these objects are anonymous and I need to find a way to access all the variables of each passed object. I have been using a pre-built NSArray and Selectors to do this but with more than 30 entries (and growing) it is kind of silly to do manually. There has to be a way to dynamically look up all the variables of an anonymous object. The obj-c runtime run-time docs mention this problem but from what I can tell this is not available in iPhone OS. If it is then I don't understand the implementation and need some guidance. A similar question was asked before but again I think they were talking about OSX and not iPhone. Any thoughts? -(NSString*)cite:(id)source { NSString *sourceClass = NSStringFromClass([source class]); // Runs through all the variables in the manually built methodList for(id method in methodList) { SEL x = NSSelectorFromString(method); // further implementation // Should be something like NSArray *methodList = [[NSArray alloc] initWithObjects:[source getVariableList]] for(id method in methodList) { SEL x = NSSelectorFromString(method); // Further implementation }

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  • Fabric methods exceptions

    - by baobee
    I try to make Fabric func, which checks if Apache installed: from fabric.api import * def check_apache(): try: result = local('httpd -v', capture=True) except: print "check_apache exception" But if httpd not installed I get: [root@server-local ~]$ fab check_apache Fatal error: local() encountered an error (return code 127) while executing 'ahttpd -v' Aborting. check_apache exception Done. How can I get correct exception for Fabric local() method ? So I need to get exception and continue executing without any Fabric error messages: [root@server-local ~]$ fab check_apache check_apache exception Done.

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  • Programming methods design phase assignment

    - by Shakir
    Hey, i have an assignment (NCC) which deals with the design phase. The Scenario is that you have four soccer divisions (divisions 1,2,3 and 4) which consist of 22 teams each and hence each team plays 42 games (home and away). The concept is similar to the barclays premier league whereby ranking is based on points or else goal difference or else goals scored by team. The difference is that the top 2 teams are promoted and the bottom 2 are relegated and this includes Div 1 and Div 4 as the top 2 of Div1 are promoted to the national league which is above division 1 regional league and bottom 2 of Div4 are relegated to the local league below Division 4 regional league. Hence there are 3 total leagues and 4 divisions in the regional league (which has 22 teams each). Now the referee has to add the result of the match and thus automatic tables have to be generated now, There are two reports League Tables for 4 divisions List of all results for any chosen team during the season by date it was played on There are a couple of things to be done... i know its gonna be terrible to make everything but atleast explain to me how i should go about drawing these and what things i should include (generally) Logical Data Structure Diagram (DSD) for each report Preliminary Program Structure (PSD) for each report Detailed Program Specification for each report Flowchart for each report There are other things but i think our teacher will give us clear "clues" for it Thanks a lot Update - Project so far: Data Structure Diagram Preliminary Program Structure

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  • Question about [Pure] methods

    - by devoured elysium
    Is the following method Pure? I'd say so, as it doesn't change in anyway the current class, thus, everything we can now currenly "see" in the class, before running this method will still be exactly the same after. Am I correct? class Set { ... public ISet<T> UnionWith(ISet<T> set) { ISet<T> unionSet = ... foreach (Element element in this) { unionSet.Add(element); } foreach (Element element in set) { unionSet.Add(element); } return unionSet; } }

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  • Object in Array is not recognised as having "methods"

    - by kevin Mendoza
    I got my application working Awhile back, but after completely and accidentally deleting it, I have tried to create it from square one. unfortunately my rewritten program is a bit cranky; does anyone see or know the possible sources of error? Also, my if statements are acting up. -(void)loadAnnotations { CLLocationCoordinate2D workingCoordinate; iProspectLiteAppDelegate *appDelegate = (iProspectLiteAppDelegate *)[[UIApplication sharedApplication] delegate]; NSMutableArray *mines =[[NSMutableArray alloc] initWithArray:(NSMutableArray *) appDelegate.mines]; BOOL gold = [[NSUserDefaults standardUserDefaults] boolForKey:@"goldControl"]; BOOL silver = [[NSUserDefaults standardUserDefaults] boolForKey:@"silverControl"]; BOOL copper = [[NSUserDefaults standardUserDefaults] boolForKey:@"copperControl"]; for(id mine in mines) { NSLog(@"in the loop"); workingCoordinate.latitude = [[mine latitudeInitial] doubleValue]; workingCoordinate.longitude = [[mine longitudeInitial] doubleValue]; iProspectLiteAnnotation *tempMine = [[iProspectLiteAnnotation alloc] initWithCoordinate:workingCoordinate]; [tempMine setTite:[mine mineName]]; if ([[mine commodity] isEqualToString:@"Gold"] && [gold == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeGold]; [mapView addAnnotation:tempMine]; } if([[mine commodity] isEqualToString:@"Silver"] && [silver == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeSilver]; } if([[mine commodity] isEqualToString:@"Copper"] && [copper == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeCopper]; } } [mines dealloc]; } where the workingCoordinate.latitude = [[mine latitudeInitial] doubleValue], as well as the longitude, and [mine mineName],it says " No '-latitudeInitiallongitudeInitial' method found" or the mineName/LongitudeInitial. also, it complains about : before ] at all the if statement lines. I don't see any errors, do you?

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  • WPF Binding to code behind methods

    - by Matt B
    Hi all, This is annoying - I know how I'd do it in web... I have a wpf image and I want to bind it's source property to a method, and pass in a property from it's bound item. IE. <image source="GetMySource({binding name})" /> Where GetMySource is protected string GetMySource(string name) { return "images/"+name+".png"; }

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  • .Net Reflection - Calling unexisting methods

    - by Joaozinho das Couves
    Lets say i call method M1 on class A using reflection. The method does not exist. Is there any way to put a handler on class A that says, "someone is trying to execute method M1"? Or Is it possible to add a method dinamically to a class? I want to add a method M1...Mn that always does MyStaticClass.DoAction("M1...Mn"); Something like: string methodName = "M1". A.AddMethod(methodname,x = MyStaticClass.DoAction(x)); Thanks

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  • ObjectDataSource Insert and Update methods error

    - by Jack
    I m developing asp.net 3.5 project. When I want to Insert with DetailsView this error occured: Error : ObjectDataSource 'ObjectDataSource2' could not find a non-generic method 'AddCity' that has parameters: CITY_NAME. <asp:ObjectDataSource ID="ObjectDataSource2" runat="server" SelectMethod="GetCityByID" UpdateMethod="UpdateCity" InsertMethod="AddCity" TypeName="NOP_CRM.Lib.nop_cities" OldValuesParameterFormatString="original_{0}"> <SelectParameters> <asp:ControlParameter ControlID="GridView1" Name="cityid" PropertyName="SelectedValue" Type="Int32" DefaultValue="1" /> </SelectParameters> <UpdateParameters> <asp:Parameter Name="CITY_NAME" Type="String" /> </UpdateParameters> <InsertParameters> <asp:Parameter Name="CITY_NAME" Type="String" /> </InsertParameters> </asp:ObjectDataSource> ... public int AddCity(string cityname) { CITY_NAME = cityname; Insert(); return _CITY_ID; }

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  • MustOverride Shared Methods in .Net

    - by Ben
    Hi I have a few class's that inherit from a base class. I want to enforce that all of these Class's implement a shared method foo(). I am not able to create the following on the base class Public MustOvveride Shared Sub foo() as this is not allowed. I also cant create an Interface that defines a Shared Sub Foo() and implement that in my derrived class's, as this also is not allowed. Does anyone know how i should implement this? p.s i realise my example is in VB and i have also tagged C#, the same problem applies to both languages and presumably the same fix would apply.

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  • Executing certain code for every method call in C++

    - by Luís Guilherme
    I have a C++ class I want to inspect. So, I would like to all methods print their parameters and the return, just before getting out. The latter looks somewhat easy. If I do return() for everything, a macro #define return(a) cout << (a) << endl; return (a) would do it (might be wrong) if I padronize all returns to parenthesized (or whatever this may be called). If I want to take this out, just comment out the define. However, printing inputs seems more difficult. Is there a way I can do it, using C++ structures or with a workaroud hack?

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  • Inject same DataContext instance across several types with Unity

    - by Sergejus
    Suppose I have IRepository interface and its implementation SqlRepository that takes as an argument LINQ to SQL DataContext. Suppose as well that I have IService interface and its implementation Services that takes three IRepository, IRepository and IRepository. Demo code is below: public interface IRepository<T> { } public class SqlRepository<T> : IRepository<T> { public SqlRepository(DataContext dc) { ... } } public interface IService<T> { } public class Service<T,T1,T2,T3> : IService<T> { public Service(IRepository<T1> r1, IRepository<T2>, IRepository<T3>) { ... } } Is it any way while creating Service class to inject all three repositories with the same DataContext?

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  • iphone: unrecognized selector sent to instance

    - by eshalev
    I am new to objective C, So maybe there is some basic thing that I am missing about selectors. I would like to understand the basic concept behind this error as I have not found an general error reference. I am getting this error when using: [CloseButton addTarget:PageContents action:@selector(CloseButtonPressed) forControlEvents:UIControlEventTouchUpInside]; and then later: - (void)CloseButtonPressed:(id)sender{ UIAlertView *someError = [[UIAlertView alloc] initWithTitle: @"Comment" message: @"hello" delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil]; [someError show]; [someError release]; }

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  • How to get attribute of a model saved in instance variable

    - by Nazar
    I am writing a plugin, in which i define a new relation dynamically with in plugin. Sample code is given below module AttachDocumentsAs @as = nil def attach_documents_as(*attachment_as) attachment_as = attachment_as.to_a.flatten.compact.map(&:to_sym) @as = attachment_as.first class_inheritable_reader(@as) class_eval do has_many @as, :as => :attachable, :class_name=>"AttachDocuments::Models::AttachedDocument" accepts_nested_attributes_for @as end end end now in any model i used it as class Person < AtiveRecord::Base attach_documents_as :financial_documents end Now want to access want to access this attribute of the class in overloaded initialize method like this def initialize(*args) super(*args) "#{@as}".build end But it is not getting required attribute, can any one help me in it. I want to build this relation and set some initial values. Waiting for guidelines from all you guys.

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  • WCF service hosted in IIS 5.0 - http get methods not invoked through the browser

    - by Dmitry
    I have service hosted in IIS5.0 and configured such way : ** <behaviors> <endpointBehaviors> <behavior name="GalleriesBehavior"> <webHttp/> </behavior> ** When I make request to http://localhost/sandboxWidget/Galleries.svc?Test ,the message I get is : "Metadata publishing for this service is currently disabled." and instructions how to expose meta data exchange...Tried this but doesn't help.. I can write any function name ,even not existing (http://localhost/sandboxWidget/Galleries.svc?blabla) ,but the message is same .... I'm new to Wcf ,but what looks me strange is that ,the same application was working in my job environment ,but not on my home PC .... I have same VS2008,NET3.5 with service pack 1

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  • Methods of pulling data from a database

    - by kingrichard2005
    I'm getting ready to start a C# web application project and just wanted some opinions regarding pulling data from a database. As far as I can tell, I can either use C# code to access the database from the code behind (i.e. LINQ) of my web app or I can call a stored procedure that will collect all the data and then read it with a few lines of code in my code behind. I'm curious to know which of these two approaches, or any other approach, would be the most efficient, elegant, future proof and easiest to test.

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