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• Flex: Why does setting scaleX/Y in mxml effect the components size but setting it in actionscript do

  - by ChrisInCambo

  Hi, I'm playing around with the scaleX/Y in the canvas tag and have noticed some strange behaviour. When I set scale in in mxml the width and height of the canvas are adjusted accordingly. For example if I have a canvas like this: <mx:Canvas width="1000" height="1000" scaleX="0.1" scaleY="0.1" /> The canvas now appears on screen to have a width and height of 100 and if inside my creationComplete callback I check the width and height property they are indeed 100. But if I do exactly the same thing except I set the scaleX/Y property from actionscript the canvas on screen appears to have a width and height of 100 as expected, but when I check the width and height property of the canvas they are still at the previous values of 1000. Could anyone help me understand what is going on and also tell me if there is any method that will refresh the width and height values so that they are correct? Thanks, Chris

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• Zend Framework: Autoloading module resources in config.ini?

  - by Olagato

  Is it possible, to configure the following behaviour in application.ini? <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap { protected function _initAdminModuleAutoloader() { $this->_resourceLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => 'Admin', 'basePath' => APPLICATION_PATH . '/modules/admin', )); $this->_resourceLoader->addResourceTypes(array( 'model' => array( 'namespace' => 'Model', 'path' => 'models' ) )); } } ?> If so, can you please show us an example? Thanks.

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• Interface for classes that have nothing in common

  - by Tomek Tarczynski

  Lets say I want to make few classes to determine behaviour of agents. The good practice would be to make some common interface for them, such interface (simplified) could look like this: interface IModel { void UpdateBehaviour(); } All , or at least most, of such model would have some parameters, but parameters from one model might have nothing in common with parameters of other model. I would like to have some common way of loading parameters. Question What is the best way to do that? Is it maybe just adding method void LoadParameters(object parameters) to the IModel? Or creating empty interface IParameters and add method void LoadParameters(IParameters parameters)? That are two ideas I came up with, but I don't like either of them.

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• Play Sound while UIImageView animating crashes the app?

  - by Rahul Vyas

  Hello all, I am having a strange problem in my app. I am creating a app in which i have 9 buttons on the view i want to play sound and animation same time. I am using UIImageview for this but i am having starnge behaviour sometimes sound play early and then animation runs.So how do i play them at same time? I am also having crash on device on a specific animation in which i have 60 jpg files. So what's the best way to do this?

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• dynamically created datagridview columns not accessible unless added to a form...why?

  - by deostroll

  We simply created a DataGridView control dynamically and bound it to a DataTable. We were tying to style certain columns. But, when we tried to access the columns we got a null reference. On further investigation we found that if we add the DataGridView control to the main form, and then try to access its columns, it works fine!!! Code which throws error: DataGridView gv = new DataGridView(); gv.DataSource = GetDataTable(); //binding it to datatable Debug.Assert(gv.Columns == null); Code which works fine: DataGridView gv = new DataGridView(); gv.DataSource = GetDataTable(); //binding it to datatable this.Controls.Add(gv); //adding to form Debug.Assert(gv.Columns == null); //the assertion fails! Why is this behaviour so? Is there a workaround for this?

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• AS3 mouseX and mouseY values wrong in Firefox

  - by Gerard

  Hi there, I'm getting some strange behaviour in my Flash movie, only in Firefox for MAC (3.6.2). Basically, the mouseX and mouseY properties of all display objects become massive numbers: < 100000000. This issue only occurs on Firefox, it is not present when the movie is run standalone, nor when it is run on any other browser. The swf requires Flash Player 10, and is written in AS3. It is also embedded via SWFObject, but I tested using the export code supplied with Flash and verified the issue is still present. Has anybody heard of this? Is it a Flash or Firefox bug? Is it a bug at all? Thanks

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• Jquery - effect + autohide

  - by lidermin

  Hello, I'm using jquery to animate a bit my web site, but I'm having a little issue with some behaviour: I have a div, which suddenly appears from the top of the page and shakes: $(minipopup).animate({ marginTop: '+=' + (240) + 'px' }, 1000); $(minipopup).effect("shake"); This mini popup has an X for closing it, or else, it will auto close after a few seconds: setTimeout(function() { $('#minipopup').effect("explode"); }, 10000); $('#closePopup').click(function() { $('#minipopup').effect("explode"); }); Everything works, except that, if the user clicks the CLOSE button, he sees the explode effect and the popup effectively dissapears, but after the 10 seconds pass (the one I defined under the setTimeout), the user again sees the popup explosion (just the effect, cause the popup is not there visually). How could I avoid that "ghost" explosion if the user already closed the popup manually? Thanks in advance.

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• Frameset frame cached by Firefox

  - by dragonfly

  Hi, I have a html page which contains nested frameset (don't ask why, I'm only servicing the app ;) ). What bothers me, is why FF caches Header.htm file constantly. I had to use clear cache to force browser to download it again. ctrl+f5 didn't help. <frameset rows="68,*" border="0" frameborder="no" framespacing="0"> <frame name="header" src="/Header.htm" scrolling="no" noresize> <frame name="footer" src="/Login.aspx?w=<% =company %>&amp;loc=<% =ccdom %>"> </frameset> Any ideas what is responsible for that behaviour? On the other hand, IE downloads the file without a hassle. Thanks, Pawel

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• Can I ask Postgresql to ignore errors within a transaction

  - by fmark

  I use Postgresql with the PostGIS extensions for ad-hoc spatial analysis. I generally construct and issue SQL queries by hand from within psql. I always wrap an analysis session within a transaction, so if I issue a destructive query I can roll it back. However, when I issue a query that contains an error, it cancels the transaction. Any further queries elicit the following warning: ERROR: current transaction is aborted, commands ignored until end of transaction block Is there a way I can turn this behaviour off? It is tiresome to rollback the transaction and rerun previous queries every time I make a typo.

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• Hot deploy not longer working on JBoss

  - by Bernhard V

  Hi! I've got a pretty annoying problem with my JBoss AS 4.2.3 GA. Until recently everything was running fine, but now the hot deploy feature is now longer working. And -- as always -- I don't know what I did to cause this behaviour. My projects are built with Maven. I've cleaned every target directory, installed the projects and then deployed them to the server. So the sources in Eclipse and the deployed projects on the server should be identical. Inside a method I've added a simple System.out.println("test"); statement and -- BANG! -- I get the following error: Do you know a way out of my trouble?

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• Where's all the XPCOM user documentation?

  - by Graham Paulson

  Google can't find much user documentation for XPCOM. Sure, it can find endless references to making new XPCOM components in C++, but that's utterly useless to anyone who needs to know how to use the existing components from JavaScript. This is a huge gap, occasionally touched on by trivial examples of creating an instance and calling a method. Has nobody with a more in-depth knowledge of the componentry written anything about its use? Using components with multiple interfaces? Implementing listeners for handling asynchronous behaviour? "Rapid Application Development with Mozilla" is no help (great breadth but little depth). Spotty references that exist to the defunct XULPlanet redirect to Mozilla Development Center, but that's pretty useless. Mozilla Development Center articles point back to XULPlanet, which is a joke. Is this the best an army of open source advocates can muster to promote the extension of The Beast?

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• How to Setup Eclipse to Start Writing Web Services using Axis2

  - by Mubashar Ahmad

  Dear Gurus I am a .net Developer but now a days i want to setup Eclipse to write a sample web services to test the capacity of Java/Axis over WCF/BasicHttpBindings. I found a couple of articles regarding the setup procedures but they are too old or their wording is may be for java or eclipse experts. Can anyone please give me detailed instruction on how can I get to work quickly. I tried my best but i can't even setup TomCat properly its not starting and throwing exception when i try to start it from eclipse servers windows. Please some one give me a latest and novice level article. Regards

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• Difference between and dll & EXE in PE format?

  - by Rajakumar

  Hi , I know exe and dlls are almost same in pe format ,i have a problem in insert a new section in a (user32)dll ,while run a application exe ,it produces Unable to locate component error .i.e ^*#%&@$<.dll(junk) was not found ,reinstatallation may fix the problem. whenever do the samething in exe ,it was work fine,but dll does not give desired output ,i cannot understand ,its behaviour.both exe &dll's are same structure ,then whats the problem ,is there may be a entry point problem ? or what is the problem ,pleasse help towards the error ? thanks...

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• Delphi debug a wrong unit

  - by Averroes

  This is an odd behaviour by my D2006 as it happens sometimes only. I have a project I want to debug. The file I want to debug is named 'Main.pas'. I have another unrelated project with the same Unit name and sometimes the Debug prompt me the wrong Main file instead of the Main unit from the current project. This have happened to me with other files with the same name. I can't debug then as the debug keys don't work (they just don't do anything). Do you have experienced the same problem? How can I fix it? Thanks.

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• emacs indentation in asm mode

  - by Gauthier

  I am looking for the equivalent of c-indent-level and ruby-indent-level, for asm-mode. That is, I want to force the indentation to 4 spaces, and I want them to be replaced with blanks. What I've seen tells me it does not exist for asm-mode. Could someone please tell me this is wrong? I tried this also: http://stackoverflow.com/questions/69934/set-4-space-indent-in-emacs-in-text-mode , to no av. I have tried: (setq tab-width 4) (setq indent-line-function 'insert-tab) (setq asm-indent-level 4) This works however: (custom-set-variables '(tab-stop-list (quote (4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120)))) But I wonder if there is a way to define that for asm-mode only. What if I wanted to keep the default tab behaviour for other modes?

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• Django: How to create a model dynamically just for testing

  - by muhuk

  I have a Django app that requires a settings attribute in the form of: RELATED_MODELS = ('appname1.modelname1.attribute1', 'appname1.modelname2.attribute2', 'appname2.modelname3.attribute3', ...) Then hooks their post_save signal to update some other fixed model depending on the attributeN defined. I would like to test this behaviour and tests should work even if this app is the only one in the project (except for its own dependencies, no other wrapper app need to be installed). How can I create and attach/register/activate mock models just for the test database? (or is it possible at all?) Solutions that allow me to use test fixtures would be great.

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• Cloud Agnostic Architecture?

  - by Dave

  Hi, I'm doing some architecture work on a new solution which will initially run in Windows Azure. However I'd like the solution (or at least the architecture/design) to be Cloud Agnostic (to whatever extent is realistic). Has anyone done any work on this front or seen any good white papers/blog posts? Our highlevel architecture will consist of a payload being sent to a web service (WCF for instance), this will be dumped on a queue (for arguments sake) and a worker process will grab messages off this queue and proccess them. There will be a database of customer information which we'd ideally like to keep out of the cloud however there are obvious performance considerations. Keen to hear other's thoughts. Cheers Dave

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• Advantage of using Thread.Start vs QueueUserWorkItem

  - by Cheeso

  In multithreaded .NET programming, what are the decision criteria for using ThreadPool.QueueUserWorkItem versus starting my own thread via new Thread() and Thread.Start()? In a server app (let's say, an ASP.NET app or a WCF service) I think the ThreadPool is always there and available. What about in a client app, like a WinForms or WPF app? Is there a cost to spin up the thread pool? If I just want 3 or 4 threads to work for a short period on some computation, is it better to QUWI or to Thread.Start().

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• Google Chrome + Ajax

  - by teehoo

  Im writing an ajax web app that uses Comet/Long Polling to keep the webpage up to date, and I noticed in Chrome, it treats the page as if its always loading (icon for the tab keeps spinning). I thought this was normal for Google Chrome + Ajax because even Google Wave had this behaviour. Well today I noticed that Google Wave no longer keeps the loading icon spinning, anyone know how they fixed this? Here's my ajax call code var xmlHttpReq = false; // Mozilla/Safari if (window.XMLHttpRequest) { xmlHttpReq = new XMLHttpRequest(); } // IE else if (window.ActiveXObject) { xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP"); } xmlHttpReq.open('GET', myURL, true); xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); xmlHttpReq.onreadystatechange = function() { if (xmlHttpReq.readyState == 4) { updatePage(xmlHttpReq.responseText); } } xmlHttpReq.send(null);

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• Specification, modeling and programming are principially the same, right?

  - by Gabriel Šcerbák

  In formal specifications based on abstract algebraic types and equational theory you use formulas of equational theory to specify theory. System which will satisfy those constraints is called in formal logic a model. Modeling is process of creating a model, which abstracts of some aspects, which are unnecessary details for a specific case. So concrete system has to adhere to created model in observed aspects. Programming is a process of creating a program which will have specific behaviour - will perform specific algorithms - and programming languages through different paradigms enable us to think in a certain specific way, which abstracts of some details, usually machine specific ones. So could we be doing all those things at the same time, because they are principially the same? Is declarative programming the nearest attempt to do that? Could we use some sort f programming languages which will be good for programming as well as for modeling and specification?

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• ASP.NET MVC project won't start under IIS 5.1 on Windows XP SP3

  - by mrjoltcola

  I've a ASP.NET MVC 2 project that runs fine under Windows 7 and will start on Windows XP if I use the Visual Studio Development Server, however, starting under IIS generates an error: Unable to start debugging on the web server With the message The specified procedure could not be found No errors in the system event viewer. If I start without debugging I get an "HTTP 500 Internal Server Error" The reason I run it under IIS is the project also includes some WCF wsHttp web services that use certificates, so the VS Development Server is not adequate for hosting those. I have already seen the links on SO that talk about adding the wildcard mapping. I've already done that, just as I've done on Windows Server 2003 where I successfully host ASP.NET MVC RC2 for quite a while.

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• How to avoid having very large objects with Domain Driven Design

  - by Pablojim

  We are following Domain Driven Design for the implementation of a large website. However by putting the behaviour on the domain objects we are ending up with some very large classes. For example on our WebsiteUser object, we have many many methods - e.g. dealing with passwords, order history, refunds, customer segmentation. All of these methods are directly related to the user. Many of these methods delegate internally to other child object but this still results in some very large classes. I'm keen to avoid exposing lots of child objects e.g. user.getOrderHistory().getLatestOrder(). What other strategies can be used to avoid this problems?

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• Out of Memory on Update or Delete of Service Reference

  - by Kelly

  I have a Service Reference for a WCF project that has just over a hundred endpoints in my ServiceHost web.config. Every time I attempt to update or delete the Service Reference, it fails with an out of memory exception. I am running Vista Ultimate SP2 64-bit with 8GB RAM. I can work around it by going outside the project and deleting the Service References folder, then coming back in and re-adding the Reference. Is this the only workaround that you know of? Thanks!

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• Using Interfaces in action signature

  - by Dmitry Borovsky

  Hello, I want to use interface in Action signature. So I've tried make own ModelBinder by deriving DefaultModelBinder: public class InterfaceBinder<T> : DefaultModelBinder where T: new() { protected override object CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) { return base.CreateModel(controllerContext, bindingContext, typeof(T)); } } public interface IFoo { string Data { get; set; } } public class Foo: IFoo /*other interfaces*/ { /* a lot of */ public string Data { get; set; } } public class MegaController: Controller { public ActionResult Process( [ModelBinder(typeof(InterfaceBinder))]IFoo foo){/bla-bla-bla/} } But it doesn't work. Does anybody have idea how release this behaviour? And yes, I know that I can make my own implementation of IModelBinder, but I'm looking for easier way.

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• problem in basic implementation of MVVM pattern - Services

  - by netmajor

  I watch some video and read articles about MVVM pattern and start thinking how should I implement it in my Silverlight app. So at first I create Silverlight application. I think that for clear view I create 3 folders: View - for each user control page in my app, ViewModel - for c# class which will querying date and Model- Entity Data Model of my SQL Server or Oracle Database. And now I am confused, cause I want to implement *WCF/RIA Services/Web services* in my project. In which folder should I put in class of services? I see in examples that Services take date and filtering it and then output data was binding in View - so It looks as ViewModel. But I was sure that someone use Services in Model and that I want to do. But how? Can someone explain me implementing Services as Model? Is my point of view at MVVM is correctly?

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