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  • Python "draw() must be called with Label instance as first argument (got _WindowMetaclass instance i

    - by Amorack
    This is a class I made using Python with pyglet to display a window. class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() pyglet.text.Label("Prototype") windowText = text.Label.draw(Window, "Hello World", font_name = "Times New Roman", font_size = 36, color = (193, 205, 193, 255)) def on_draw(self): self.clear() self.label.draw() Every time I try to run it I get the error "TypeError: unbound method draw() must be called with Label instance as first argument (got _WindowMetaclass instance instead)". I'm pretty sure I know what I have to do (find how to get Label's instance) just not how to do it. Could someone help me understand how to make this work?

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  • Is it proper to get and especially set Perl module's global variables directly?

    - by DVK
    I was wondering what the best practice in Perl is regarding getting - or, more importantly, setting - a global variable of some module by directly accessing $Module::varName in case the module didn't provide getter/setter method for it. The reason it smells bad to me is the fact that it sort of circumvents encapsulation. Just because I can do it in Perl, I'm not entirely certain I should (assuming there actually is an alternative such as adding a getter/setter to the module). I'm asking this because I'm about to request an addition of a getter/setter for a global variable in one of the core Perl modules, and I would like to avoid it soundly and unanimously rejected on the grounds of "Why the heck do you need one when you can access the variable in the package directly?" - in case doing the latter is actually considered perfectly OK by the community.

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  • Powershell: resolve path that might not exist?

    - by Eamon Nerbonne
    I'm trying to process a list of files that may or may not be up to date and may or may not yet exist. In doing so, I need to resolve the full path of an item, even though the item may be specified with relative paths. However, Resolve-Path prints and error when used with a non-existant file. For example, What's the simplest, cleanest way to resolve ".\newdir\newfile.txt" to "C:\Current\Working\Directory\newdir\newfile.txt" in Powershell? Note that System.IO.Path's static method use with the process's working directory - which isn't the powershell current location.

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  • NHibernate IPreUpdateEventListener weird behaviour

    - by mcaaltuntas
    I am using NHibernate 2.0.1 and IPreUpdateEventListener,IPreInsertEventListener events for audit logging purposes. I have a basic entity that has a one to many relation like this. User-------Books From an ASP.NET MVC controller method i am adding a book to a user like this. Book book =new Book("LOTR"); var userBook=user.AddBook(book); After session flushing OnPreInsert event called once for newly created Book object than OnPreUpdate called for all books objects in user's books collection even they have not changed.So I am updating LastMofiedDate property of all books objects and I dont want to do this. Is this supposed behaviour of NHibernate or am I missing something?

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  • Why can't I log in with "claimid.com" as an OpenID?

    - by radu-negrila
    Hi, I need to implement a relying party for Open ID in a load balanced environment. Following the suggestions found here I have tried passing null to the OpenIdRelyingParty constructor. The results are somehow not consistent. If I use www.myopenid.com as a provider it works. If I use www.claimid.com as a provider I get the following exception: ProtocolException - No OpenID endpoint found. This exception is thrown on the CreateRequest method call even in a non balanced environment (my local workstation). Any idea what can I do to make it work for both providers ?

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  • Why can't I call methods within a class that explicitly implements an interface?

    - by tyrone302
    Here's the story. I created and interface, IVehicle. I explicitly implemented the interface in my class, Vehicle.cs. Here is my interface: Interface IVehicle { int getWheel(); } here is my class: class Vehicle: IVehicle { public int IVehicle.getWheel() { return wheel; } public void printWheel() { Console.WriteLine(getWheel()); } } Notice that "getWheel()" is explicitly implemented. Now, when I try to call that method within my Vehicle class, I receive an error indicating that getWheel() does not exist in the current context. Can someone help me understand what I am doing wrong?

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  • How do I manually Dispose RSACryptoServiceProvider?

    - by phq
    I have read on MSDN(see Important note) that RSACryptoServiceProvider must be disposed. They give the example: using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider()) Now I'm trying to include RSACryptoServiceProvider into MyClass making use of it in several Methods. With this setup I cannot use the using statement. Instead I try to call the .Dispose() Method of the RSACryptoServiceProvider object at a suitable time but then I get the compile error message: `System.Security.Cryptography.AsymmetricAlgorithm.Dispose(bool)' is inaccessible due to its protection level Is RSACryptoServiceProvider not supposed to be used longer than one function call(using the using statement)? How can I fix this, is not making the Dispose call an option?

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  • Why image button dont work with forms in IExplorer 7+ ??? (Html)

    - by DomingoSL
    Hello guys, i have a web form who send post variables like: <form action="teacher.php" method="post"> <input name="pass" type="password"> <input name="quiere" type="image" value="submit" src="IMG/unlock-32.png" /> </from> In the same page i check for a submit acction with php doing a simple isset check like: "if (isset($_POST['quiere'])) {" But if you do this in IE the post var "QUIERE" (the button var) does not post, the others vars are fine, and if you try this simple form in any other browser it works. I only get this form function well in IE changing the button for a normal button, instead of a image button like: <input name="quiere" type="submit" value="submit" /> In this way, the var "quiere" get post. So, what do you think? and sorry for my english.

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  • UITableView titleForHeaderInSection prints headers to console twice then crashes

    - by joec
    In the method below titleForHeaderInSection, for some reason the NSLog prints out the headers twice and then the app crashes in objc_msgSend. I can't understand why this would cause the app to crash? It would seem from research that crashes in objc_msgSend are caused by sending messages to already freed objects, but is that the case here? My sectionNames array is populated in viewDidLoad. - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { NSString *title = nil; title=[sectionNames objectAtIndex:section]; NSLog(title); return title; } Thanks

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  • ASP.NET MVC Head Verb and Selenium RC

    - by Rob
    Selenium (RC) is being used to test an ASP.NET 1.1 site. When we make a request via Selenium RC (and then in turn via Firefox or other configured browser) the http verb is "HEAD". We have several form action methods that have separate POST and GET methods decorated with AcceptVerbs(HttpVerbs.Get). These methods are returning a 404 and logging a "a public action method could not be found" error message. Questions: When writing separate Get/Post action methods what is the best practice for handling the Head verb? Should we always decorate with an AcceptVerbs(HttpVerbs.Get | HttpVerbs.Head)? The only time we've seen HEAD verbs is from Selenium and from some crawlers. We created robots.txt entries for the crawlers. Does anyone know why HEAD verbs are issued via Selenium (instead of an If-Modified-Since header)? Are there mainstream crawlers that use the HEAD verb? Does it affect SEO ranking to not have it?

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  • How to play sound in Python WITHOUT interrupting music/other sounds from playing

    - by Morlock
    I'm working on a timer in python which sounds a chime when the waiting time is over. I use the following code: from wave import open as wave_open from ossaudiodev import open as oss_open def _play_chime(): """ Play a sound file once. """ sound_file = wave_open('chime.wav','rb') (nc,sw,fr,nf,comptype, compname) = sound_file.getparams( ) dsp = oss_open('/dev/dsp','w') try: from ossaudiodev import AFMT_S16_NE except ImportError: if byteorder == "little": AFMT_S16_NE = ossaudiodev.AFMT_S16_LE else: AFMT_S16_NE = ossaudiodev.AFMT_S16_BE dsp.setparameters(AFMT_S16_NE, nc, fr) data = sound_file.readframes(nf) sound_file.close() dsp.write(data) dsp.close() It works pretty good, unless any other device is already outputing sound. How could I do basically the same (under linux) without having the prerequisite that no sound is being played? If you think the process would require an API to ensure software mixing, please suggest a method :) Thx for the support

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  • In Android (on JB), how can I add an action to a custom rich notification?

    - by user496854
    I've been playing with the new rich notificaitons in Jelly Bean, and everything works as expected when I set up a new notificaiton using the templates Notification.BigPictureStyle, Notification.BigTextStyle, or Notification.InboxStyle. I can use the Notification.Builder.addAction() method, and the action buttons show up at the bottom of the extended notification. But when I try to create a cutsom notification using Notification.bigContentView, the action buttons never show up. Just to clarify, if I never set bigContentView, the buttons do show up. But as soon as that field is set to a custom RemoteViews object, the buttons are gone. Does anyone have any ideas on why this is happening?

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  • JW Player: cross-browser "display:none" player behavior

    - by two7s_clash
    Is there a simple, upfront method to have FF and IE treat hidden JW Players the same? I am placing different instances of the player dynamically in jQuery generated tabs. In effect, switching tabs hides the parent div of each player. In FireFox, the tab switch and accompanying "display" change stops the player. This doesn't happen in IE. I would like it to. What is the easiest way to have both browsers act the same? I am hoping for a CSS/HTML solution, either thorough the way the players are embedded or a style rule Otherwise I suppose I will need to add an item listener that compares the currently selected tab id to currently active players... but I'd rather not go that route. Thanks for your tips! EDIT: So, I'd rather be able to change the player CSS or markup on tab change than send stop events to all the players but the player in the currently active tab.

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  • jQuery-ui problem with modal dialog from ajax

    - by Intra
    Hi I have following setup index.html with <div id="container"</div using anchor method I load different html content into this container. My content contains div for modal dialog "dialog-form" and I initialise it with the custom function from the javascript included in index.html on successful ajax load using callback $.get("callback.php",query, function(data){ $("#container").html(data); initPos(); // here we run javascript to initialise modal dialog }); Everything is ok until user click other menu (we load different content) and after that again clicks menu with this modal dialog, so page loads again, we call script again (everything is ok yet), dialog opens, information from the dialog is submitted to server and on sucessful sumbit I want to close the dialog with ('#dialog-form').dialog('close');it worked first time, but no longer works because we initialised this dialog twice and using Firebug I can see two different instances of modal dialog with the same name. So, what is the right way to do the thing? Is there any way to close multiple dialogs with the same name or maybe we can kill all closed modal dialogs when user clicks different menu?

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  • LLBLGEN: Linq to LLBGEN don't work

    - by StreamT
    I want to make custom select from the database table using Linq. We use LLBGEN as ORM solution. I can't do LINQ query to Entities Collection Class unless I call GetMulti(null) method of it. Is it possible to do LINQ query to LLBGEN without extracting all table first? BatchCollection batches = new BatchCollection(); BatchEntity batch = batches.AsQueryable() .Where(i => i.RegisterID == 3) .FirstOrDefault(); // Exception: Sequence don't contains any elements batches = new BatchCollection(); batches.GetMulti(null); // I don't want to extract the whole table. BatchEntity batch = batches.AsQueryable() .Where(i => i.RegisterID == 3) .FirstOrDefault(); //Works fine

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  • Compile error when calling ToList() when accessing many to many with Linq To Entities

    - by KallDrexx
    I can't figure out what I am doing wrong. I have the following method: public IList<WObject> GetRelationshipMembers(int relId) { var members = from r in _container.ObjectRelationships where r.Id == relId select r.WObjects; return members.ToList<WObject>(); } This returns the following error: Instance argument: cannot convert from 'System.Linq.IQueryable<System.Data.Objects.DataClasses.EntityCollection<Project.DomainModel.Entities.WObject>>' to 'System.Collections.Generic.IEnumerable<Project.DomainModel.Entities.WObject>' How can I convert the EntityCollection to a list without lazy loading?

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  • HTML Button's jQuery function is having trouble with MVC FileResult

    - by Aaron Salazar
    I intended for this function to call my MVC action method that returns a CSV report. $(function() { $('#exportButton').click(function() { $.get('/curReport/GetCSVReport'); }); }); If I make a button like the code below then, when it is clicked, I'm given the "Open with/Save File" window. <input type="button" value="Export" onClick="location.href='CurReport/GetCSVReport'"> However, when I change my button to use my jQuery function then, although GetCSVReport() is called I'm not given the "Open with/Save File" window. Here is my GetCSVReport() public FileResult GetCSVReport() { ... return fileResult; } How can I get my jQuery function to work like the onClick? Thank you, Aaron

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  • using WrapCompressedRTFStream in C#

    - by Code Smack
    Hello, I am rewording this question: Csharp C# visual studio 2008 How do I use the WrapCompressedRTFStream when using DLLImport with mapi32.dll? Sample of code to import the WrapCompressedRTFStream method. (I found this, I did not figure this part out) [DllImport("Mapi32.dll", PreserveSig = true)] private static extern void WrapCompressedRTFStream( [MarshalAs(UnmanagedType.Interface)] UCOMIStream lpCompressedRTFStream, uint ulflags, [MarshalAs(UnmanagedType.Interface)] out UCOMIStream lpUncompressedRTFStream ); public const uint MAPI_MODIFY = 0x00000001; public const uint STORE_UNCOMPRESSED_RTF = 0x00008000; How do I use this in my c# application when my compressedRichText is stored in a string.

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  • SharpArchitecture: Using FNH's ClassMaps instead of auto mapping

    - by zihotki
    I need to use ClassMaps instead of auto mapping because of legacy database. But I don't see how to tune SharpArch to use them. I tried to remove AutoPersistentModelGenerator and use the following code in the InitializeNHibernateSession method: var config = NHibernateSession.Init(webSessionStorage, new[]{"ApplicationConfiguration.Models.dll"}); Fluently.Configure(config) .Mappings(m => { m.FluentMappings.AddFromAssemblyOf<ConfigSchema>(); }); But I always get MappingException - "No persister for: ConfigSchema" when trying to work with the ConfigSchema. Has anyone tried to do this?

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  • Inherit a parent class docstring as __doc__ attribute

    - by Reinout van Rees
    There is a question about Inherit docstrings in Python class inheritance, but the answers there deal with method docstrings. My question is how to inherit a docstring of a parent class as the __doc__ attribute. The usecase is that Django rest framework generates nice documentation in the html version of your API based on your view classes' docstrings. But when inheriting a base class (with a docstring) in a class without a docstring, the API doesn't show the docstring. It might very well be that sphinx and other tools do the right thing and handle the docstring inheritance for me, but django rest framework looks at the (empty) .__doc__ attribute. class ParentWithDocstring(object): """Parent docstring""" pass class SubClassWithoutDoctring(ParentWithDocstring): pass parent = ParentWithDocstring() print parent.__doc__ # Prints "Parent docstring". subclass = SubClassWithoutDoctring() print subclass.__doc__ # Prints "None" I've tried something like super(SubClassWithoutDocstring, self).__doc__, but that also only got me a None.

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  • iPhone SDK. How to assign NSString to UILabel text ?

    - by Del
    If I have a class/object like this #import <Foundation/Foundation.h> @interface anObject : NSObject { NSString *aProp; } @property NSString aProp; @end and in the cellForRowAtIndexPath method i want to assign one of the string values from its properties to a uilabel of a tableviewcell, how do i do it? I've tried this but it doesn't work [[cell topLabel] setText:(NSString *)anObject.aProp]; Putting a breakpoint on the above line and inspecting it, the debugger says "variable is not a CFString Casting the property to a CFString doesnt work Modifying the class and declaring the property as a CFStringRef doesnt work either

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  • Composing actors

    - by Brian Heylin
    I've implemented a Listenable/Listener trait that can be added to Actors. I'm wondering if it's possible to attach this style of trait to an actor without it having to explicitly call the listenerHandler method? Also I was expecting to find this functionality in the Akka library. Am I missing something or is there some reason that Akka would not not include this? trait Listenable { this: Actor => private var listeners: List[Actor] = Nil protected def listenerHandler: PartialFunction[Any, Unit] = { case AddListener(who) => listeners = who :: listeners } protected def notifyListeners(event: Any) = { listeners.foreach(_.send(event)) } } class SomeActor extends Actor with Listenable { def receive = listenerHandler orElse { case Start => notifyListeners(Started()) case Stop => notifyListeners(Stopped()) } }

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  • Python - do big doc strings waste memory?

    - by orokusaki
    I understand that in Python a string is simply an expression and a string by itself would be garbage collected immediately upon return of control to a code's caller, but... Large class/method doc strings in your code: do they waste memory by building the string objects up? Module level doc strings: are they stored infinitely by the interpreter? Does this even matter? My only concern came from the idea that if I'm using a large framework like Django, or multiple large open source libraries, they tend to be very well documented with potentially multiple megabytes of text. In these cases are the doc strings loaded into memory for code that's used along the way, and then kept there, or is it collected immediately like normal strings?

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  • Convert/Cast base type to Derived type

    - by user102533
    I am extending the existing .NET framework class by deriving it. How do I convert an object of base type to derived type? public class Results { //Framework methods } public class MyResults : Results { //Nothing here } //I call the framework method public static MyResults GetResults() { Results results = new Results(); //Results results = new MyResults(); //tried this as well. results = CallFrameworkMethod(); return (MyResults)results; //Throws runtime exception } I understand that this happens as I am trying to cast a base type to a derived type and if derived type has additional properties, then the memory is not allocated. When I do add the additional properties, I don't care if they are initialized to null. How do I do this without doing a manual copy?

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  • Asp.net HttpWebResponse - how can I not depend on WebException for flow control?

    - by Campos
    I need to check whether the request will return a 500 Server Internal Error or not (so getting the error is expected). I'm doing this: HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.Method = "GET"; HttpWebResponse response = request.GetResponse() as HttpWebResponse; if (response.StatusCode == HttpStatusCode.OK) return true; else return false; But when I get the 500 Internal Server Error, a WebException is thrown, and I don't want to depend on it to control the application flow - how can this be done?

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