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  • Use python decorators on class methods and subclass methods

    - by AlexH
    Goal: Make it possible to decorate class methods. When a class method gets decorated, it gets stored in a dictionary so that other class methods can reference it by a string name. Motivation: I want to implement the equivalent of ASP.Net's WebMethods. I am building this on top of google app engine, but that does not affect the point of difficulty that I am having. How it Would look if it worked: class UsefulClass(WebmethodBaseClass): def someMethod(self, blah): print(blah) @webmethod def webby(self, blah): print(blah) # the implementation of this class could be completely different, it does not matter # the only important thing is having access to the web methods defined in sub classes class WebmethodBaseClass(): def post(self, methodName): webmethods[methodName]("kapow") ... a = UsefulClass() a.post("someMethod") # should error a.post("webby") # prints "kapow" There could be other ways to go about this. I am very open to suggestions

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  • Background Image in JTextPane

    - by Nivas
    How do I set a background image to a JTextPane - some sort of a watermark. I tried this option - creating a child class of JTextPane and use the paint method to draw the image. But then the text is displayed "below" the image than above. Is there any "standard" or "well known" way to do this? (BTW, I tried (something silly?) making the content type "text/html", and setting the image as the background image of a <div> but it did not help.)

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  • Spring MVC defaultValue for Double

    - by mlathe
    Hi All, I'm trying to build a controller like this: @RequestMapping(method = {RequestMethod.GET}, value = "/users/detail/activities.do") public View foo(@RequestParam(value = "userCash", defaultValue="0.0") Double userCash) { System.out.println("foo userCash=" + userCash); } This works fine: http://localhost/app/users/detail/activities.do?userCash=123& but in this one userCash==null despite the default value http://localhost/app/users/detail/activities.do?userCash=& From some digging it seems like the first one works b/c of a Editor binding like this: binder.registerCustomEditor(Double.class, new CustomNumberEditor(Double.class, false)); The trouble is that the second param (ie false) defines whether blank values are allowed. If i set that to true, than the system considers the blank input as valid so i get a null Double class. If i set it to false then the system chokes on the blank input string with: org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'double'; nested exception is java.lang.NumberFormatException: empty String Does anyone know how to get the defaultValue to work for Doubles? Thanks --Matthias

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  • Can't create blob container on Azure Blob Storage

    - by desautelsj
    The following code throws an error on the "CreateIfNotExist" method call. I am attempting to connect to my Azure Blob storage and create a new container called "images" var storageAccount = new CloudStorageAccount( new StorageCredentialsAccountAndKey("my_account_name", "... my shared key ..."), "https://blob.core.windows.net/", "https://queue.core.windows.net/", "https://table.core.windows.net/" ); var blobClient = storageAccount.CreateCloudBlobClient(); var blobContainer = blobClient.GetContainerReference("images"); blobContainer.CreateIfNotExist(); The error is: [StorageClientException: The requested URI does not represent any resource on the server.] The "images" container does not exist but I was expecting it to be created instead of an error to be thrown. What am I doing wrong? I have tried HTTP instead of HTTPS but the result is the same error.

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  • TypeError: can't convert String into Integer

    - by demas
    I have code: class Scene def initialize(number) @number = number end attr_reader :number end scenes = [Scene.new("one"), Scene.new("one"), Scene.new("two"), Scene.new("one")] groups = scenes.inject({}) do |new_hash, scene| new_hash[scene.number] = [] if new_hash[scene.number].nil? new_hash[scene.number] << scene end When I'm lauching it I get error: freq.rb:11:in `[]': can't convert String into Integer (TypeError) from freq.rb:11:in `block in <main>' from freq.rb:10:in `each' from freq.rb:10:in `inject' from freq.rb:10:in `<main>' If I change scenes to: scenes = [Scene.new(1), Scene.new(1), Scene.new(2), Scene.new(1)] the problem dissapear. Why I get error message in the first case? Why Ruby decide to convert scene.number from String to Integer? And one additional question about the 'inject' method. When Ruby initialize the 'new_hash' variable and how can Ruby know the type of this variable?

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  • Enterprise distribution Program for iPhone

    - by Mohammed Sadiq
    Hi all, I would like to implement a application which backs up all the internal datas like sms, mms, videos, audios, documents, call history stored in iPhone. But this seems to be not possible with api docs that the apple has released so far ... I have gone through the pdf of ENterprise distribution program and some of the links related to Enterprise Distribution Program, specifies about the Remote wipe and accessing of internal datas like Calendar, sms, mms ect .... But they didnt mention how to do it programmatically. Does Apple provide any special priviledges like extra api support to access the internal data in their Enterprise Distribution Program?. Is there any difference between Enterprise Distribution Program and Standard Distribution Program in the development point of view? And since in-house distribution does not require Apple approval, shall we use some other method which are not officially mentioned in apple docs, to access the internal stored data .. If so can anyone point out the way to do it? Any help would be greatly appreciated awaiting for your response Best regards, Mohammed Sadiq ....

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  • How to check if object is sql to linq type

    - by remdao
    Hi, anyone know if there's any easy way to check if an object is an sql to ling type? I have a method like this but would like it to only accept valid types. public static void Update(params object[] items) { using (TheDataContext dc = new TheDataContext()) { System.Data.Linq.ITable table; if(items.Length > 0) table = dc.GetTable(items[0].GetType()); for (int i = 0; i < items.Length; i++) { table.Attach(items[i]); dc.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues, items[i]); } dc.SubmitChanges(); } }

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  • Open Fancybox (or equiv) from Form input type="submit"

    - by nickmorss
    is there a way to get a fancybox (http://fancy.klade.lv/) or any other lightbox from submitting a FORM (with an image button)? HTML looks like this: <form action="/ACTION/FastFindObj" method="post"> <input name="fastfind" class="fastfind" value="3463" type="text"> <input name="weiter" type="submit"> </form> These won't do: $("form").fancybox(); $("input").fancybox(); $("input[name='weiter']").fancybox(); Anyone spotting my mistake or having a workaround or an alternative script? Thanks in advance

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  • Why do I need an IoC container as opposed to straightforward DI code?

    - by Vadim
    I've been using Dependency Injection (DI) for awhile, injecting either in a constructor, property, or method. I've never felt a need to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container. I played with .NET containers like StructureMap, NInject, Unity, and Funq. I still fail to see how an IoC container is going to benefit / improve my code. I'm also afraid to start using a container at work because many of my co-workers will see code which they don't understand. Many of them may be reluctant to learn new technology. Please, convince me that I need to use an IoC container. I'm going to use these arguments when I talk to my fellow developers at work.

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  • IP Address Lookup in VB.net (XP vs Windows 7)

    - by TheHockeyGeek
    Currently I use the following code to retrieve the IP address of the local workstation... strIPAddress = System.Net.Dns.GetHostEntry(strComputerName).AddressList(0).ToString() This is fine for the Windows XP workstations. However, in Vista and Windows 7, this returns the IPv6 address which is not used at all. Is there a method of setting this to work so it always returns the IPv4 address regardless of platform? I know I can increment the AddressList value to 1 and get the correct IP in Windows 7. The bad part is that this requires going through the motions of identifying the OS and choosing one or the other. The must be some way of specifying IPv4 only. Perhaps getting a result from DNS on the network rather than the workstation itself?

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  • jQuery datepicker getMinDate '+1d'

    - by Adrian Adkison
    Once I have set the minDate property of a datepicker with the convenient string syntax $(elem).datepicker('option','minDate','+1d +3m'); how can I get the date object of the minDate? To help illustrate, there is a method $(elem).datepicker('getDate'); which returns the date that is entered in the input in the format of a date object. I would like the same thing but for datepicker('getMinDate'). There is an option like this $(elem).datepicker('option','minDate'); but this returns '+1d +3m' which is not helpful. I need the actual date object to compare with another date object. Any ideas?

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  • UITableView background customization strange behavior

    - by Omer
    Hi, There is a couple of hours that I'm trying to set a tableView background image. My controller is a subclass of UITableViewController, and I simply wrote this lines of code in ViewDidLoad method. UIImage *image = [UIImage imageNamed:@"home-portrait-iphone.png"]; UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; self.tableView.backgroundView = imageView; Everything looks great on the simulator, I mean, I see my table and as background view, y can see the image. But when the app is running on the device (ipod touch), I get this error: Program received signal: “SIGABRT”. and the stack says: * -[UITableView setBackgroundView:]: unrecognized selector sent to instance 0x812e00 Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[UITableView setBackgroundView:]: unrecognized selector sent to instance 0x812e00' and the exception is thrown in the assignment, a mean this line: self.tableView.backgroundView = imageView; any ideas? Thank you in advance.

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  • How to void authorized transaction in authorize.net gateway using ActiveMerchant

    - by m7d
    Goal: Only have successful purchases show up on a customer's billing statement. I don't want declined authorizations showing up on their billing statement (as seen in an online banking system) as pending. A customer often will accidentally input an incorrect billing address, for example, followed by a correct one. Together, the two attempts, one successful and one not both show up on their billing statement as pending prior to settlement. This can scare the customer as it looks potentially like they will be charged twice. Details: When I do an AUTH_CAPTURE (via ActiveMerchant's purchase) or an AUTH (via ActiveMerchant's authorize) which is declined and subsequently want to void that authorization (via ActiveMerchant's void) so as not to have it appear on a customer's billing statement as pending (even though it will settle out after a few days), the gateway can't find the transaction to void using the authorization code returned from the authorization or capture method calls on the gateway. This is specific to the authorize.net AIM gateway. Please advise. Thanks!

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  • UITableView section header and section footer not updating (redraw problem)

    - by Gerd
    I have a UITableView grouped style with custom header and footer view. Inside the footer I put a UILabel and a UIButton. Clicking on the button hides or show some rows, updates the UILabel in the footer view and finally resizes footer view. Basically everything is working fine. BUT the text ion the label is not updated on the screen. It is updated in the UILabel text property, but only if I scroll the section footer out of the visible area and scroll it back, it is updated. So it's a typical redraw problem here of the UITableView. I tried every method to force update like needsLayout etc. Nothing helped. I have seen some related questions but with some different behaviour and no solution. Any help/ideas? Thanks, Gerd

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  • ActionScript rotated sprite's startDrag bounds

    - by TheDarkIn1978
    when assigning a bounds to a draggable sprite, it doesn't seem to take rotation of the sprite into consideration. the code below adds a sprite to the display list, rotates it 45º, and adds a MouseEvent.MOUSE_DOWN event to allow dragging. the startDrag() method's second parameter simply returns the bounds of the stage as a rectangle. however, because of the sprite's rotation, its corners can be dragged past the bounds of the stage. any thoughts? var mySprite:Sprite = new Sprite(); mySprite.graphics.beginFill(0x0000FF, 1); mySprite.graphics.drawRect(0, 0, 200, 200); mySprite.graphics.endFill(); mySprite.rotation = 45; addChild(mySprite); mySprite.addEventListener(MouseEvent.MOUSE_DOWN, dragSprite, false, 0, true); function dragSprite(evt:MouseEvent):void { evt.target.startDrag(false, spriteBounds()); }

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  • Good Async pattern for sequential WebClient requests

    - by Omar Shahine
    Most of the code I've written in .NET to make REST calls have been synchronous. Since Silverlight on Windows Phone only supports Async WebClient and HttpWebRequest calls, I was wondering what a good async pattern is for a Class that exposes methods that make REST calls. For example, I have an app that needs to do the following. Login and get token Using token from #1, get a list of albums Using token from #1 get a list of categories etc my class exposes a few methods: Login() GetAlbums() GetCategories() since each method needs to call WebClient using Async calls what I need to do is essentially block calling Login till it returns so that I can call GetAlbums(). What is a good way to go about this in my class that exposes those methods?

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  • using a "temporary files" folder in python

    - by zubin71
    I recently wrote a script which queries PyPI and downloads a package; however, the package gets downloaded to a user defined folder. I`d like to modify the script in such a way that my downloaded files go into a temporary folder, if the folder is not specified. The temporary-files folder in *nix machines is "/tmp" ; would there be any Python method I could use to find out the temporary-files folder in a particular machine? If not, could someone suggest an alternative to this problem?

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  • How do I control when a contextMenuStrip is displayed?

    - by GregH
    In vb.net (2008), I want to be able to control when a contextMenuStrip (context menu) is displayed. I don't want it to always appear when the right mouse button is clicked...only when certain criteria within my program are met. I figure I would use addHandler but I'm not exactly clear on how to completely control the opening of the contextMenuStrip. I know I would issue a call to the "open" method to render the contextMenuStrip. However, I am unclear as to how to completely take over control of when to render the contextMenuStrip.

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  • System.Threading.Tasks - Limit the number of concurrent Tasks

    - by James
    I have just started to look at the new "System.Threading.Tasks" goodness in .Net 4.0, and would like to know if there is any build in support for limiting the number of concurrent tasks that run at once, or if this should be manually handled. E.G: If I need to call a calculation method 100 times, is there a way to set up 100 Tasks, but have only 5 execute simultaneously? The answer may just be to create 5 tasks, call Task.WaitAny, and create a new Task as each previous one finishes. I just want to make sure I am not missing a trick if there is a better way to do this. Thanks for any help.

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  • Rails & ActiveRecord: Appending methods to models that inherit from ActiveRecord::Base

    - by PlankTon
    I have a standard ActiveRecord model with the following: class MyModel < ActiveRecord::Base custom_method :first_field, :second_field end At the moment, that custom_method is picked up by a module sent to ActiveRecord::Base. The functionality basically works, but of course, it attaches itself to every model class, not just MyModel. So if I have MyModel and MyOtherModel in the same action, it'll assume MyOtherModel has custom_method :first_field, :second_field as well. So, my question is: How do I attach a method (eg: def custom_method(*args)) to every class that inherits from ActiveRecord::Base, but not by attaching it to ActiveRecord::Base itself? Any ideas appreciated.

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  • Incompatibilities between Indy 9 and Windows Server 2003?

    - by mcmar
    I'm having a problem with a Delphi application on some Windows 2003 servers. It uses a webservice call to connect with another server and transmit data back and forth. As soon as the app gets to the Authenticate method, the app dies. The app has worked for years on previous boxes with Win Server 2003, but it doesn't on freshly built machines. The machines are set up the same way for the most part, but there is clearly some config setting that differs that I'm not able to track down. Also, while the error becomes apparent in the call to Authenticate, packet sniffing proves that nothing ever happens between the app and the server it's trying to contact, which strengthens my thoughts that something is dieing early on in setting up the connection. I can't duplicate the error locally, so I can't step through the app in a debugger either. Any thoughts on why an Indy 9 Delphi web connection might silently fail?

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  • TabHost Problem in android

    - by sairam333
    when i use the TabActivity in my application it display the error,In below final TabHost tabHost = getTabHost(); tabHost.addTab(tabHost.newTabSpec("tab1") .setIndicator("tab1") .setContent(this)); tabHost.addTab(tabHost.newTabSpec("tab2") .setIndicator("tab2") .setContent(this)); tabHost.addTab(tabHost.newTabSpec("tab3") .setIndicator("tab3") .setContent(this)); In the above code error displayed at final TabHost tabHost = getTabHost(); as the method is undefined.But in sample application they use the same function at it is working.In my application why it is not working.Tell me the solution for it.Thanks in advance.

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  • How to Create Site using Sharepoint web services?

    - by Pari
    Hi All, I am tring to create site on sharepoint programatically using Sharepoint Web Services.(C#). I tried Admin.asmx service (CreateSite method). But it's showing error: "An unhandled exception of type 'System.InvalidOperationException' occurred in System.Web.Services.dll". I tried with all possible parameters. Curremtly referring Below Links: http://www.oliebol.org/blog/Lists/Posts/Post.aspx?ID=6 http://msdn.microsoft.com/en-us/library/administration.admin.createsite.aspx My Code: Admin admService = new Admin(); admService.Credentials = new NetworkCredential(username,password,domain); admService.Url = "http://mychserver/_vti_adm/admin.asmx"; admService.PreAuthenticate = true; try { String SitePath = "http://myserver/SiteDirectory/SharepointSampleSite"; admService.CreateSite(SitePath,"First Site", "Sample Site", 1033, "STS#0", "Domain\\username",username,userid, "", ""); } catch (System.Web.Services.Protocols.SoapException ex) { MessageBox.Show("Message:\n" + ex.Message + "\nDetail:\n" +ex.Detail.InnerText + "\nStackTrace:\n" + ex.StackTrace); } Thanx,

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  • problem with template inheritance

    - by amiad
    I'm trying to understand whay i get an error on this code: (the error is under g++ unix compiler. VS is compiling OK) template<class T> class A { public: T t; public: A(const T& t1) : t(t1) {} virtual void Print() const { cout<<*this<<endl;} friend ostream& operator<<(ostream& out, const A<T>& a) { out<<"I'm "<<typeid(a).name()<<endl; out<<"I hold "<<typeid(a.t).name()<<endl; out<<"The inner value is: "<<a.t<<endl; return out; } }; template<class T> class B : public A<T> { public: B(const T& t1) : A<T>(t1) {} const T& get() const { return t; } }; int main() { A<int> a(9); a.Print(); B<A<int> > b(a); b.Print(); (b.get()).Print(); return 0; } This code is giving the following error: main.cpp: In member function 'const T& B::get() const': main.cpp:23: error: 't' was not declared in this scope It did compiled when i changed the code of B to this: template<class T> class B : public A<T> { public: B(const T& t1) : A<T>(t1) {} const T& get() const { return A<T>::t; } }; I just cant understand what is the problem with the first code... It doesn't make sense that i really need to write "A::" every time...

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  • Differentiating Between UITouch Objects On The iPhone

    - by Jasarien
    Hey guys, I'm trying to differentiate between two (or more) UITouch objects on the iPhone. Specifically, I'd like to know the order in which the touches occurred. For instance, in my -touchesBegan:withEvent: method I get an NSSet of UITouch objects. Now I can find out how many touches there are, but, which object represents which finger? I notice the timestamp property on UITouch - is this what I'm looking for? I see how that would be useful to obtaining the last or first touch - providing the touches don't mutate... Therein lies my problem. I can use the timestamp to single out the latest touch, but then the touch that occurred first moves, and IT becomes the latest touch... At the end of this exercise, I'd like to be able to implement the "pinch" gesture to zoom in or out, etc. Any help would be greatly appreciated, thanks.

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