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• django-rest-framework: api versioning

  - by w--

  so googling around it appears that the general consensus is that embedding version numbers in REST URIs is a bad practice and a bad idea. even on SO there are strong proponents supporting this. e.g. Best practices for API versioning? My question is about how to accomplish the proposed solution of using the accept header / content negotiation in the django-rest-framework to accomplish this. It looks like content negotiation in the framework, http://django-rest-framework.org/api-guide/content-negotiation.html is already configured to automatically return intended values based on accepted MIME types. If I start using the Accept header for custom types, I'll lose this benefit of the framework. Is there a better way to accomplish this in the framework?

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• MKMapView within UITableView

  - by john-london

  I have a MKMapView within a UITableviewCell and I want to be able to disable scrolling of the table view when the user starts to drag within the map view. My plan had been to override the MKMapView touchesBegan/Moved etc methods and if they were called to then disable scrolling in the parent view. Scrolling in the parent view would be enabled again only when the touches in the MKMapView ended or were cancelled. My problem is that the touchesBegan/Moved methods inside MKMapView are not called - the problem is also discussed here: stackoverflow discussion. My table view is within a tab control, so I don't think I can extend UIWindow the way they describe, as there are several views that could be within the window, depending on which tab is active. How can I access the MKMapView touch events please?

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• Detect Browser Refresh vs. Form Submit in ASP.Net MVC 2

  - by Eric J.

  I have an ASP.Net questionnaire application that resubmits data to the same page, showing a different question each time. There are BACK and NEXT buttons to navigate between questions. I would like to detect when the form is submitted due to a browser refresh vs. one of the buttons being pressed. I came across a WebForms approach but don't know how to apply those principals in an MVC 2 application since page events aren't available (as far as I know... I'm pretty new to Microsoft's MVC model). How would one apply that principle to MVC 2? Is there a better way to detect refresh?

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• Google Appengine and Python exceptions

  - by Jim

  In my Google Appengine application I have defined a custom exception InvalidUrlException(Exception) in the module 'gvu'. Somewhere in my code I do: try: results = gvu.article_parser.parse(source_url) except gvu.InvalidUrlException as e: self.redirect('/home?message='+str(e)) ... which works fine in the local GAE development server, but raises <type 'exceptions.SyntaxError'>: invalid syntax (translator.py, line 18) when I upload it. (line 18 is the line starting with 'except') The problem seems to come from the 'as e' part: if I remove it I don't get this exception anymore. However I would like to be able to access the raised exception. Have you ever encountered this issue? Is there an alternative syntax?

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• UIButton doesn't listen to content mode setting?

  - by Dan Ray

  firstButton is a UIButton of type Custom. I'm programmatically putting three of them across each cell of a table, thusly: [firstButton setImage:markImage forState:UIControlStateNormal]; [firstButton setContentMode:UIViewContentModeScaleAspectFit]; [cell.contentView addSubview:firstButton]; Elsewhere, I'm telling it to clipToBounds. What I get is a crop of the center square of the image, rather than an aspect-scaled rendering of it. I've tried this lots of ways, including setting the mode property on firstButton.imageView, which also doesn't seem to work.

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• Deny Switching to Tabpage in a tabcontrol

  - by Maneesh

  I have a form(C#) with a tab control and its has around five tab pages. each of the tab have a few textboxes. 1) if a User is in say Tab A and edits certain fields i need to validate the text enetered if found invalid then i should not allow any tab switch ? is that possible? 2) Another case could be ... user edits some values and clicks on another tab, on doing so i need to check if the values that were enetered for Tab A is correct or not ? can i do this? I am a novice to C#... so may be these questions sound very basic any help will be appreciated. also i want to know what are these events of a tab page Leave, validated or validating ?

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• Drupal node_save and special characters.

  - by Pierre

  Hello, i'm trying to create nodes and taxonomy terms through a custom php script by using the node_save() function. I'm working on drupal 6. It's working well (thanks to previous questions on stackoverflow) except for accented letters. Indeed, when a title or a taxonomy term contain "é", "è" or "à", the sentence is cut before those special characters. For example, a title like that: "Bonjour les éléphants" will create a node with "Bonjour les " as title. I don't know if it's linked to my database or if i have to use a special encoding in php (iconv() blabla) The fact is, for drupal titles, i can not use html encoding (for example: é is é in html) because drupal will render &eacute and not é... When i create a taxonomy or a title manually, i have no problems and the accented letter is saved in the database as "é". Soo if you can help me to create terms and title with accented letters, that will be great : ) Thank you !

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• Should my connected web parts support IWebPartField, IWebPartRow and IWebPartData?

  - by Javaman59

  I've been writing some simple webparts, and they communicate via a custom interface type. That's working fine. I've got one ConnectionProvider, with a variety of ConnectionConsumers. I see that the OOTB SharePoint webparts provide many standard connections, apparently through IWebPartField and IWebPartRow (IWebPartData seems less supported). I've tried to add a IWebPartRow interface to a provider, and found that it's not actually useful (apparently), unless it's shareing data that the OOTB components use, such as images, urls and users. Well, that's the impression I got, anyway... I've only done a quick experiment, and found it quite difficult to implement and test. Is there any point in spending time trying to add support for the standard webpart interfaces?

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• GWT and java.io.Serializable

  - by Ethan Leroy

  Hello, In my GWT app I have the following model class: import com.google.gwt.user.client.rpc.IsSerializable; public class TestEntity implements IsSerializable { public String testString; } This class implements the GWT custom IsSerializable marker interface - which I really don't like, because I use my model classes not only for GWT. So I prefer java.io.Serializable. But if I modify the class to implement Serializable instead of IsSerializable, the GWT RPC mechanism doesn't work anymore. I don't get an error on the server side, but on the client AsyncCallback.onFailure is invoked. I am using... GWT 1.7.0. Spring 2.5.6.SEC01 Spring and GWT are configured as described here.

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• Disabling Alt-F4 on a Win Forms NotifyIcon

  - by Jippers

  I am using a NotifyIcon from Win Forms to make a systray icon for my C# application. I have a bug where if the user right clicks the icon for the context menu, they can press Alt-F4 and the icon will disappear from the tray, but the Main WPF application is still running. This is especially a problem when they have "minimized to systray" and the only control of the application is now gone. Anyone know how to handle this specificially on the systray? I've looked at the NotifyIcon documentation and there isn't anything relating to keypress events.

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• Very simple Error handling with NServiceBus

  - by andy

  hey guys, here's a simple scenario NServiceBus Client/Server setup. The "Message" is a custom Class I wrote. The Client sends a request message. The Server receives the message, and the server does this: Bus.Reply(new UserDataResponseMessage { ID = Guid.NewGuid(), Response = users }); Then nothing. The Client never receives a response. Exception: By trawling through the log4net NServiceBus logs I find an exception, and it turns out that my customs class "users" is not marked as Serializable. Ok, how does one got about "throwing" or "handling" that kind of error? NServiceBus seems to promote the idea of not handling errors, but in this scenario its obvious to see some kind of "throw" would have saved a lot of time. How do I handle such exceptions, where do they occur, where do they go?

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• Looking for calculator source code, BSD-licensed

  - by Horace Ho

  I have an urgent project which need many functions of a calculator (plus a few in-house business rule formulas). As I won't have time to re-invent the wheel so I am looking for source code directly. Requirements: BSD licensed (GPL won't help) in c/c++ programming language 32-bit CPU minimum dependency on platform API/data structure best with both RPN and prefix notation supported emulator/simulator code also acceptable (if not impossible to add custom formula) with following functions (from wikipedia) Scientific notation for calculating large numbers floating point arithmetic logarithmic functions, using both base 10 and base e trigonometry functions (some including hyperbolic trigonometry) exponents and roots beyond the square root quick access to constants such as pi and e plus hexadecimal, binary, and octal calculations, including basic Boolean math fractions optional statistics and probability calculations complex numbers programmability equation solving

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• Jacob + Microsoft SpeechAPI trouble

  - by guai

  Following groovy code kills JVM on SetInterest method invocation It uses Scriptom, the groovy DSL for Jacob Spend whole day searching SAPI's SPFEI macro to rewrite it in groovy. Don't sure does it came out right. Or maybe other bugs %) Help welcomed import org.codehaus.groovy.scriptom.* import static org.codehaus.groovy.scriptom.tlb.sapi.SpeechVoiceSpeakFlags.* import static org.codehaus.groovy.scriptom.tlb.sapi.SpeechRunState.* import static org.codehaus.groovy.scriptom.tlb.sapi.SpeechLib.* import static org.codehaus.groovy.scriptom.tlb.sapi.SPEVENTENUM.* def spfei(Integer[] args) { res = 1<<SPEI_RESERVED1 | 1<<SPEI_RESERVED2 args.each {res |= 1<<it} res } Scriptom.inApartment { def voice = new ActiveXObject('SAPI.SpVoice') evtsrc = voice.toInterface(ISpEventSource) evtsrc.setInterest(spfei(SPEI_WORD_BOUNDARY), spfei(SPEI_WORD_BOUNDARY)) evtsrc.events.Callbacks = {args -> println 'jjj'} voice.speak "Hello, world", SVSFlagsAsync }

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• MVC4 bundling GZIP and headers

  - by plurby

  I'm testing my site with Google PageSpeed and YSlow and the bundles that i've created with MVC4 bundles aren't getting Gzipped (Compressing resources with gzip or deflate can reduce the number of bytes sent over the network) and there is no Vary: Accept-Encoding header (Instructs proxy servers to cache two versions of the resource: one compressed, and one uncompressed. This helps avoid issues with public proxies that do not detect the presence of a Content-Encoding header properly.) And also how can i add encoding header for the whole scripts folder on the ISS. I know there is HTTP Response Headers, then Add Custom HTTP Response Header, but will this work on the whole scripts folders and subfolders and what to put in the Name and Value fields. How can this be solved. Regards.

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• Issue with CGEventTapCreate() call.

  - by Dheeraj

  Hi All, I'm trying to register for global key events using this code : void function() { CFMachPortRef keyUpEventTap = CGEventTapCreate(kCGHIDEventTap,kCGHeadInsertEventTap,kCGEventTapOptionListenOnly,CGEventMaskBit(kCGEventKeyUp),&keyUpCallback,NULL); CFRunLoopSourceRef keyUpRunLoopSourceRef = CFMachPortCreateRunLoopSource(NULL, keyUpEventTap, 0); CFRelease(keyUpEventTap); CFRunLoopAddSource(CFRunLoopGetCurrent(), keyUpRunLoopSourceRef, kCFRunLoopDefaultMode); CFRelease(keyUpRunLoopSourceRef); } The application crashes while executing CFMachPortCreateRunLoopSource() call. I think the crash is because of CGEventMaskBit(kCGEventKeyUp) when I create an event tap. But if I create event tap using CGEventTapCreate(kCGHIDEventTap,kCGHeadInsertEventTap,kCGEventTapOptionListenOnly,CGEventMaskBit(kCGEventFlagsChanged),&keyUpCallback,NULL), the application works fine. It does not crash. I'm getting callbacks when any modifier key is pressed. But I need to get callbacks for delete key pressed. Any ideas? Thanks, Dheeraj.

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• Where to mention Accessdenied page in form Authentication

  - by Muhammad Akhtar

  I have implement Form Authentication <location path="Admin"> <system.web> <authorization> <deny users="?"/> <allow roles="Admin" /> <deny roles="systemAdmin"/> </authorization> </system.web> </location> Since in above mentioned rights, Admin can have access to Admin folder and systemAdmin can't have. I have make custom Accessdenied page where I am showing message to user he has not permission to access this page Now the issue is, If systemAdmin try to hit Admin folder page, he will be redirected to AccessDenied.apsx page. (please Note: both user are authenticated, 1 user have permission to some folder and other user have permission to other folder. I don't want to put check in each page) where to specify accessdenied page redirection ? Thanks

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• WCF Service Error

  - by Sanjeev K B

  Hi, I have a WCF service deployed on a windows 2003 server. We are using a WPF application to consume this service. The trouble is if we deploy a new version of WCF service or leave the IIS and WPF application idle for sometime and then try to execute a functionality, we are get the following exception: The content type text/html of the response message does not match the content type of the binding (text/xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 119 bytes of the response were:'<HEAD><TITLE>500: Server Error [20-0004]</TITLE></HEAD> <BODY> <H1>500: Server Error [20-0004]<H1> </BODY> </HTML> Thanks and Regards,

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• LinkedIn type friends connection required in php

  - by Akash

  Hi, I am creating a custom social network for one of my clients. In this I am storing the friends of a user in the form of CSV as shown below in the user table uid user_name friends 1 John 2 2 Jack 3,1 3 Gary 2,4 4 Joey 3 In the above scenario if the logged in user is John and if he visits the profile page of Joey, the connection between them should appear as John-Jack-Gary-Joey I am able to establish the connection at level 1 i.e If Jack visits Joey's profile I am able to establish the following : Jack-Gary-Joey But for the 2nd level I need to get into the same routine of for loops which I know is not the right solution + I am not able to implement that as well. So, can someone please help me with this? Thanks in Advance, Akash P:S I am not in a position to change the db architecture :(

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• Can I use swank-clojure with the clojure 1.2 master branch?

  - by Rob

  I'm happily using swank-clojure, installed via elpa. But I'd like to do some work with deftype, defprotocol, etc., which aren't aren't available in clojure 1.1. To use my own class paths, I'm using the excellent suggestion by Rick Moynihan in the stackoverflow question about setting custom classpaths, which was to set up a script like: #!/bin/bash java -server -cp "./lib/*":./src clojure.main -e "(do (require 'swank.swank) (swank.swank/start-repl))" And that works swimmingly if the clojure jar file in lib is 1.1, but with 1.2, it blows up: Exception in thread "main" java.lang.NoSuchMethodError: clojure.lang.RestFn.<init>(I)V (macroexpand.clj:1) at clojure.lang.Compiler.eval(Compiler.java:5274) at clojure.lang.Compiler.load(Compiler.java:5663) at clojure.lang.RT.loadResourceScript(RT.java:330) at clojure.lang.RT.loadResourceScript(RT.java:321) at clojure.lang.RT.load(RT.java:399) at clojure.lang.RT.load(RT.java:371) at clojure.core$load__5663$fn__5671.invoke(core.clj:4255) at clojure.core$load__5663.doInvoke(core.clj:4254) at clojure.lang.RestFn.invoke(RestFn.java:409) ...and many, many more So is there some magical incantation to make this work, or is clojure 1.2 compatibility not there yet?

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• Nginx A/B testing

  - by Alex

  Hey, I'm trying to do A/B testing and I'm using Nginx fo this purpose. My Nginx config file looks like this: events { worker_connections 1024; } error_log /usr/local/experiments/apps/reddit_test/error.log notice; http { rewrite_log on; server { listen 8081; access_log /usr/local/experiments/apps/reddit_test/access.log combined; location / { if ($remote_addr ~ "[02468]$") { rewrite ^(.+)$ /experiment$1 last; } rewrite ^(.+)$ /main$1 last; } location /main { internal; proxy_pass http://www.reddit.com/r/lisp; } location /experiment { internal; proxy_pass http://www.reddit.com/r/haskell; } } } This is kind of working, but css and js files woon't load. Can anyone tell me what's wrong with this config file or what would be the right way to do it? Thanks, Alex

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• Ignoring old multiple asynchronous ajax requests

  - by Travis

  I've got a custom javascript autocomplete script that hits the server with multiple asynchronous ajax requests. (Everytime a key gets pressed.) I've noticed that sometimes an earlier ajax request will be returned after a later requests, which messes things up. The way I handle this now is I have a counter that increments for each ajax request. Requests that come back with a lower count get ignored. I'm wondering: Is this proper? Or is there a better way of dealing with this issue? Thanks in advance, Travis

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• Testing injected dependencies into your struts2 actions

  - by Barry

  Hi, I am wondering how others might have accomplished this. I found in the Spring documentation @required which I attempted to use in a 'test' but got this stmt INFO XmlConfigurationProvider:380 - Unable to verify action class [xxx] exists at initialization I have found another way in spring to do this is to write custom init methods and declare those on the bean but it almost seems like this is a strange thing to do to a struts2 action. In my application I inject through spring different web services (via setter injection) into different actions. I want to ensure on startup these are not null and set.

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• Is there any event fired when a DataTemplate has been initiated in WPF?

  - by Shimmy

  Hello! Take a look at the following xaml: <ListBox ItemsSource="{Binding}"> <ListBox.Resources> <CollectionViewSource x:Key="CVS"/> </ListBox.Resources> <ListBox.DataTemplate> <DataTemplate OnBinding="myBinding"> <ListBox DataContext="{StaticResource CVS}" ItemsSource="{Binding}" /> </DataTemplate> </ListBox.DataTemplate> </ListBox> So I can handle the binding and manually retrieve the CVS and set its Source property to my custom stuff according to the DataTemplate's DataContext. Or else there is a different way in doing it. Any ideas are welcommed!

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• WCF - Passing CurrentPrincipal in the Header

  - by David Ward

  I have a WCF service that needs to know the Principal of the calling user. In the constructor of the service I have: Principal = OperationContext.Current.IncomingMessageHeaders.GetHeader<MyPrincipal>("myPrincipal", "ns"); and in the calling code I have something like: using (var factory = new ChannelFactory<IMyService>(localBinding, endpoint)) { var proxy = factory.CreateChannel(); using (var scope = new OperationContextScope((IContextChannel)proxy)) { var customHeader = MessageHeader.CreateHeader("myPrincipal", "ns", Thread.CurrentPrincipal); OperationContext.Current.OutgoingMessageHeaders.Add(customHeader); newList = proxy.CreateList(); } } This all works fine. My question is, how can I avoid having to wrap all proxy method calls in the using (var scope...{ [create header and add to OperationContext]? Could I create a custom ChannelFactory that will handle adding the myPrincipal header to the operation context? Something like that would save a whole load of copy/paste which I'd rather not do but I'm not sure how to achieve it:) Thanks

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• Compile-time lookup array creation for ANSI-C?

  - by multiproximus

  A previous programmer preferred to generate large lookup tables (arrays of constants) to save runtime CPU cycles rather than calculating values on the fly. He did this by creating custom Visual C++ projects that were unique for each individual lookup table... which generate array files that are then #included into a completely separate ANSI-C micro-controller (Renesas) project. This approach is fine for his original calculation assumptions, but has become tedious when the input parameters need to be modified, requiring me to recompile all of the Visual C++ projects and re-import those files into the ANSI-C project. What I would like to do is port the Visual C++ source directly into the ANSI-C microcontroller project and let the compiler create the array tables. So, my question is: Can ANSI-C compilers compute and generate lookup arrays during compile time? And if so, how should I go about it? Thanks in advance for your help!

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