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• Is there an difference between transient properties defined in the data model, or in the custom subc

  - by mystify

  I was reading that setting the value of a transient property always results in marking the managed object as "dirty". However, what I don't get is this: If I make a subclass of NSManagedObject and use some extra properties which I don't need to be persistet, how does Core Data know about them and how can it mark the object as dirty when I access these? Again, they're not defined in the data model, so Core Data has no really good hint that they are there. Or does Core Data use some kind of introspection to analyze my custom class and figure out what properties I have in there?

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• Custom events and event pooling in jQuery - What's the point?

  - by Nick Lowman

  I've been reading about custom events in jQuery and why they should be used but I'm still clearly missing the point. There is a very good article I read here that has the following code example; function UpdateOutput() { var name = $('#txtName').val(); var address = $('#txtAddress').val(); var city = $('#txtCity').val(); $('#output').html(name + ' ' + address + ' ' + city); } $(document).bind('NAME_CHANGE ADDRESS_CHANGE CITY_CHANGE', function() { UpdateOutput(); }); $('#txtAddress').keyup(function() { $(document).trigger('ADDRESS_CHANGE'); }); $('#txtCity').keyup(function() { $(document).trigger('CITY_CHANGE'); }); Can someone tell me why I just don't call the UpdateOutput() function directly? It would still work exactly the same way, i.e. $('#txtAddress').keyup(function() { UpdateOutput() }); $('#txtCity').keyup(function() { UpdateOutput() }); Many thanks

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• Is it possible to use RedirectToAction() inside a custom AuthorizeAttribute class?

  - by Lance McNearney

  Using ASP.Net MVC 2, is there any way to use the RedirectToAction() method of the Controller class inside a class that is based on the AuthorizeAttribute class? public class CustomAttribute : AuthorizeAttribute { protected override bool AuthorizeCore(HttpContextBase context) { // Custom authentication goes here return false; } public override void OnAuthorization(AuthorizationContext context) { base.OnAuthorization(context); // This would be my ideal result context.Result = RedirectToAction("Action", "Controller"); } } I'm looking for a way to re-direct the user to a specific controller / action when they fail the authentication instead of returning them to the login page. Is it possible to have the re-direct URL generated for that controller / action and then use RedirectResult()? I'm trying to avoid the temptation to just hard-code the URL.

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• Creating a jQuery Plugin, How do I do Custom Scopes?

  - by viatropos

  I would like to create a jQuery plugin with an API something like this: $("#chart").pluginName().attr("my_attr"); Instead of these: $("#chart").pluginName_attr("my_attr"); $.pluginName.attr("#chart", "my_attr"); Basically, instead of having to namespace every method that acts similar to ones in jQuery, I'd like to "scope" the methods to a custom api, where $("#chart).pluginName() would return an object such that get, attr, find, and a few others would be completely rewritten. I'm sure this is not a well-liked idea as it breaks convention (does it?), but it's easier and more readable, and probably more optimized, than the two options above. What are your thoughts?

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• How to make pytest display a custom string representation for fixture parameters?

  - by Björn Pollex

  When using builtin types as fixture parameters, pytest prints out the value of the parameters in the test report. For example: @fixture(params=['hello', 'world'] def data(request): return request.param def test_something(data): pass Running this with py.test --verbose will print something like: test_example.py:7: test_something[hello] PASSED test_example.py:7: test_something[world] PASSED Note that the value of the parameter is printed in square brackets after the test name. Now, when using an object of a user-defined class as parameter, like so: class Param(object): def __init__(self, text): self.text = text @fixture(params=[Param('hello'), Param('world')] def data(request): return request.param def test_something(data): pass pytest will simply enumerate the number of values (p0, p1, etc.): test_example.py:7: test_something[p0] PASSED test_example.py:7: test_something[p1] PASSED This behavior does not change even when the user-defined class provides custom __str__ and __repr__ implementations. Is there any way to make pytest display something more useful than just p0 here? I am using pytest 2.5.2 on Python 2.7.6 on Windows 7.

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• How can we know which cell is touched in tablView when a custom button in the cell is touched ?

  - by srikanth rongali

  I need to know which cell is touched when any button inside the cell is touched. I have custom UIButton *button1 in the cell and UIButton *button2 on the cell.imageView.image of the cell. I wrote selectors for both buttons.; But, I could not differentiate the buttons for each cell. How do I know which cell button was touched. What to do, to know that a particular cell's button was touched ? Thank you.

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• How do I create custom Controls for my VS2005 toolbox?

  - by end-user

  Ok, this question might more about design theory. I have successfully created controls that show up in my toolbox, so I'm pretty sure I have the process right. Also, my "AutoToolboxPopulate" is set to true, so things are showing up as I create them. My question is this: I'm sub-classing a native Control for specialized use. When I derive my class from an exposed concrete class, such as BulletedList, my custom Control appears in my Toolbox. However, when I drop it back to the parent, such as ListControl, my Control is not listed (actually it's grayed out when I "List All"). What am I missing?

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• HTC Hero Mouse BOll click not working on Custom ListView?

  - by UMMA

  dear friends, i have created custom list view using class EfficientAdapter extends BaseAdapter implements { private LayoutInflater mInflater; private Context context; public EfficientAdapter(Context context) { mInflater = LayoutInflater.from(context); this.context = context; } public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder holder; convertView = mInflater.inflate(R.layout.adaptor_content, null); convertView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { } }); } and other necessary methods... also } using touch screen when i click on list item OnClickListener of list item is called. but when i use Mouse Boll / Track Boll (Phone Hardware) to click on ListItem OnClickListener of list item is not called. can any one guide me is this Phone bug or My Fault? any help would be appriciated.

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• Using a custom URL parameter in Wordpress (with permalinks)?

  - by kiko

  Hello - Is there a way to perhaps edit .htaccess to add a custom URL parameter to Wordpress, so that the parameter is not stripped out by permalinks? I have a Wordpress site with a page that queries a separate (non-Wordpress) database. I passed the URL parameter "pubID" to display individual books and it is working OK. Example: http://www.uglyducklingpresse.org/catalog/browse/item/?pubID=63 But the individual books are not showing up properly in Google - maybe because they all have the same auto-generated "canonical" URL meta tab - one with the "pubID" parameter stripped out. Thank you for any help.

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• WPF: In Expression Blend, how to change Foreground of a custom button with a Border on different states?

  - by SubmarineX

  In Expression Blend 4, I want to change the Foreground of a custom button on different states. I'm just able to change the Background and BorderBrush. Just like this: If the state is "Normal", the color of text "Button" is Black, while the state is "Pressed", the color of text "Button" is White. On Brushes Panel under Properties Panel, there're 3 properties but no Foreground property: Who can help me? I'm so perplexed. Edit I find ContentControl have a Foreground property, but ContentPresenter haven't. Wether I should use ContentControl instead of ContentPresenter?

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• How do I show a custom UIImagePicker within a view?

  - by cory ginsberg

  I'm making an app that involves a 'mirror.' Basically, the view should show the UIImagePickerControllerCameraDeviceFront with a custom border around it that I would create. I have looked around the web for days and I can only find a way of putting a subview on the camera view, I want it to be the opposite way. I have seen this happen before, but I have no idea as how to do it as it appears that UIImagePickerController must be a superview and can't be a subview. Please help me anyway you can and thank you in advanced.

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• User control event or method override where custom properties are valid?

  - by Curtis White

  I have an ASP.NET user control that is used in another use control. The parent user control uses data-binding to bind to a custom property of the child user control. What method can I override or page event where I am ensured that the property state is set? I think in a page it is PageLoaded versus the Page_Load override? I am looking for this in the user control because my property is always null even though it is set. Thanks.

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• How to get and modify a property value through a custom Attribute?

  - by David G

  I want to create a custom attribute that can be used on a property like: [TrimInputString] public string FirstName { get; set; } that will be functional equivalent of private string _firstName public string FirstName { set { _firstName = value.Trim(); } get { return _firstName; } } So basically every time property is set the value will be trimmed. How do I get the value parsed, modify that value and then set the property with the new value all from within the attribute? [AttributeUsage(AttributeTargets.Property)] public class TrimInputAttribute : Attribute { public TrimInputAttribute() { //not sure how to get and modify the property here } }

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• Can I add a custom method to Core Data-generated classes?

  - by Andy

  I've got a couple of Core Data-generated class files that I'd like to add custom methods to. I don't need to add any instance variables. How can I do this? I tried adding a category of methods: // ContactMethods.h (my category on Core Data-generated "Contact" class) #import "Contact.h" @interface Contact (ContactMethods) -(NSString*)displayName; @end ... // ContactMethods.m #import "ContactMethods.h" @implementation Contact (ContactMethods) -(NSString*)displayName { return @"Some Name"; // this is test code } @end This doesn't work, though. I get a compiler message that "-NSManagedObject may not respond to 'displayName' " and sure enough, when I run the app, I don't get "Some Name" where I should be seeing it.

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• DB fields not showing up in association custom queries?

  - by Kevin

  I have a notification list that the user can select different show options for different kinds of notifications along with how many results are returned. I'm keeping them in the user model because I want the custom sort to stay with the user between sessions. Here is the association in my user model: has_many :notifications, :class_name => "Notification", :foreign_key => "user_id", :conditions => ["won = ? and lost = ? and paid = ?", self.prefs_won, self.prefs_lost, self.prefs_paid], :limit => self.prefs_results.to_s But when I use the above code, Rails throws me an "unknown method" error for self.prefs_won. It is definitely a field in my database and set as a boolean value, but Rails can't find it... what's the problem?

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• Writing a custom wpf 'rolling' plot control (are there any components with such functionality?)

  - by adrin

  I need a wpf plot control that would 'roll' (scroll) as data is fed to it (instead of stretching, etc). Unfortunately i didnt find a working component so now I am considering writing my own control (its plotting features need to be simple). Did anyone write a custom plot/chart control? Is it difficult? What container should I use (Canvas & ViewBox?) so that it is reasonably fast, easy to write and scales as window is resized?

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• Any custom/third party Visual C# text box Controls with extra features?

  - by PlaZmaZ

  I'm writing a program that uses the textbox in visual C# to read a log file. When dealing with very large amounts of text, writing to the textbox is incredibly slow. The textbox also lacks many features. Are there any custom textbox controls that are faster, or even a sort of embedded editor (with ability to highlight certain words, indent, input bookmarks)? Many of the features I want are programmable, but it would be nice if there was a faster textbox or one that already had these features :) Thanks.

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• How can I Find out what BCL types a custom type is using its method?

  - by dotnetdev

  If I have a class, eg T1, and I want to know what classes in the BCL it is using, how could I do this? I came up with this: T1.GetType().GetMethods().Where(x => x.DeclaringType.Namespace == "System"); But this will get all methods in my custom type, but I want to look inside each Method, so I was hoping I could do something like: T1.GetType().GetMethods().BodyTypesUsed; to check if my method uses a type like Streamwriter. How could I achieve this?

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• asp.net + How to create custom multi-templated tree databound control?

  - by ParagM

  I dont want to use asp.net's TreeView control. I want to create a custom template databound control with multi template support like - <asp:MtNavigationControl> <ItemTemplate> ... ... </ItemTemplate> <SelectedItemTemplate> ... ... </SelectedItemTemplate> <ParentItemTemplate> ... ... </ParentSelectedItemTemplate> <SelectedParentItemTemplate> ... ... </SelectedParentSelectedItemTemplate> </asp:MtNavigationControl> My data is like - class Employee { string EmployeeName List<Employee> Employees } Does anyone know how to accomplish it? Please help !!!

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• c++ link temporary allocations in fuction to custom allocator?

  - by user300713

  Hi, I am currently working on some simple custom allocators in c++ which generally works allready. I also overloaded the new/delete operators to allocate memory from my own allocator. Anyways I came across some scenarios where I don't really know where the memory comes from like this: void myFunc(){ myObj testObj(); ....do something with it } In this case testObj would only be valid inside the function, but where would its memory come from? Is there anyway I could link it to my allocator? Would I have to create to object using new and delete or is there another way? Thanks

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• ASP.NET MVC - Custom object instantiation / providing with the Modelbinder?

  - by ropstah

  Is it possible to customize the object initiation / providing with the default ASP.NET MVC Modelbinder? <AcceptVerbs(HttpVerbs.Post)> _ Function EditObject(id As int, <Bind(Exclude:="Id")> obj As BLL.Object) As ActionResult End Function I would like to 'provide' obj to the modelbinder. (i don't want the Modelbinder to use New() and instantiate obj, but I want to deliver the object from a custom repository.) Is this possible? Edit: The loading from the repository should be done based on the id parameter of EditObject...

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• How to create and add a custom made component to a Dialog based app (MFC)?

  - by kobac

  I want to make a custom made component (a line chart), that would be used in other applications. I don't know 2 things: 1) Where should I use (within component class!) the methods for drawing, like FillRect or PolyLine? In OnPaint handler that I should define and map it in MESSAGE MAP? Will it (OnPaint handler) be called from OnPaint handler of the dialog of the application or where from? 2)How to connect the component, once it is made, to the test application, which will for example be dialog based? Where should I instantiate that component? From an OnCreate method of the MyAppDialog.cpp? I started coding in MFC few days ago and I'm so confused about it. Thanks in advance, Cheers.

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• How I can store custom values in Joomla's "Application context"?

  - by Q-Protex

  I just finished to implement a custom functionality in one of the page articles in my Joomla website using sorcerer. In this page it is possible to query a hash and lookup it against a database. I would like to store the last 5 queries and show them in the page but I don't know how to do it. I need something as Java EE "Application Context" to store this values and make them available to all the users so using a Session to store this values is not what I need. I saw in the documentation that in Joomla exists JApplicacion but none of his methods allows me to store data.

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• FileNotFoundException when running WiX CustomAction with COMAdmin interop

  - by dabcabc

  I am trying to create a WiX custom action which will allow me to shutdown and clear down a COM+ package as part of an upgrade installation, or create and configure a new COM+ package as part of the initial installation. I previously had this running as a CustomAction within a standard Visual Studio MSI but this only allows the custom action to be executed after the files have been copied - which will fail as the package will still be running. The COMAdmin.dll has been added as a reference to the CustomAction project and is set CopyLocal=true. In the bin folder for the custom action project the Interop.COMAdmin.dll is present. The answer to this question seems to suggest that it should work. I am getting the following exception within the MSI log when trying to install: MSI (s) (C4:04) [10:40:34:205]: Invoking remote custom action. DLL: C:\WINDOWS\Installer\MSI119.tmp, Entrypoint: BeforeInstall SFXCA: Extracting custom action to temporary directory: C:\WINDOWS\Installer\MSI119.tmp-\ SFXCA: Binding to CLR version v2.0.50727 Calling custom action MyCustomAction!MyCustomAction.CustomActions.BeforeInstall Exception thrown by custom action: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Interop.COMAdmin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. File name: 'Interop.COMAdmin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' at MyCustomAction.CustomActions.BeforeInstall(Session session) WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value . --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture) at Microsoft.Deployment.WindowsInstaller.CustomActionProxy.InvokeCustomAction(Int32 sessionHandle, String entryPoint, IntPtr remotingDelegatePtr)

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• CGContextDrawPDFPage taking up large amounts of memory

  - by Ed Marty

  I have a PDF file that I want to draw in outline form. I want to draw the first several pages on the document each in their own UIImage to use on a button so that when clicked, the main display will navigate to the clicked page. However, CGContextDrawPDFPage seems to be using copious amounts of memory when attempting to draw the page. Even though the image is only supposed to be around 100px tall, the application crashes while drawing one page in particular, which according to Instruments, allocates about 13 MB of memory just for the one page. Here's the code for drawing: //Note: This is always called in a background thread, but the autorelease pool is setup elsewhere + (void) drawPage:(CGPDFPageRef)m_page inRect:(CGRect)rect inContext:(CGContextRef) g { CGPDFBox box = kCGPDFMediaBox; CGAffineTransform t = CGPDFPageGetDrawingTransform(m_page, box, rect, 0,YES); CGRect pageRect = CGPDFPageGetBoxRect(m_page, box); //Start the drawing CGContextSaveGState(g); //Clip to our bounding box CGContextClipToRect(g, pageRect); //Now we have to flip the origin to top-left instead of bottom left //First: flip y-axix CGContextScaleCTM(g, 1, -1); //Second: move origin CGContextTranslateCTM(g, 0, -rect.size.height); //Now apply the transform to draw the page within the rect CGContextConcatCTM(g, t); //Finally, draw the page //The important bit. Commenting out the following line "fixes" the crashing issue. CGContextDrawPDFPage(g, m_page); CGContextRestoreGState(g); } Is there a better way to draw this image that doesn't take up huge amounts of memory?

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