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• WAS Non-HTTP activation - hooking application startup

  - by Mike Tours

  I'm trying to integrate a netTcpBinding based application that is hosted inside WAS with an IoC container (autofac/spring). Unfortunately, when it starts inside WAS and due to the fact that it is not an Http based application, no events are fired inside the Global application class. I need to catch the application domain startup so that I can configure the IoC container. Is there any way to do this when hosting in WAS? I've seen horrible things involving using static classes inside App_Code folders, but I'd like something somewhat more testable and not quite as dirty.

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• How can I implement "real time" messaging on Google AppEngine?

  - by Freed

  I'm creating a web application on Google AppEngine where I want the user to be notified a quickly as possible after certain events occour. The problem is similar to say a chat server in that I need something happening on one connection (someone is writing a message in a chat room) to propagate to a number of other connections (other people in that chat room gets the message). To get speedy updates from the server to the client I'm planning on using long polling with XmlHttpRequest, hoping that AppEngine won't interfere other than possibly restriing the timeout. The real problem however is efficient notification between connections on AppEngine. Is there any support for this type of cross connection notification on AppEngine that does not involve busy-waiting? The only tools I can think of to do this at all is either using the data storage (slow) or memcache (unreliable), and none of them would let me avoid busy-waiting. Note: I know about XMPP support on AppEngine. It's related, but I want a browser based solution, sending messages to the users by XMPP is not an option.

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• IPhone: different system timers??

  - by matt

  I have been using mach_absolute_time() for all my timing functions so far. calculating how long between frames ect. I now want to get the exact time touch input events happen using event.timestamp in the touch callbacks. the problem is these two seem to use completely different timers. sure, you can get them both in seconds, but their origins are different and seemingly random... is there any way to sync the two different timers? or is there anyway to get access to the same timer that the touch input uses to generate that timestamp property? otherwise its next to useless.

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• Controlling the visibility of a Bitmap in .NET

  - by ET

  Hi everyone, I am trying to create this simple application in c#: when the user double clicks on specific location in the form, a little circle will be drawn. By one click, if the current location is marked by a circle - the circle will be removed. I am trying to do this by simply register the MouseDoubleClick and MouseClick events, and to draw the circle from a .bmp file the following way: private void MouseDoubleClick (object sender, MouseEventArgs e) { Graphics g = this.CreateGraphics(); Bitmap myImage = (Bitmap)Bitmap.FromFile("Circle.bmp"); g.DrawImage(myImage, e.X, e.Y); } My problem is that I dont know how to make the circle unvisible when the user clicks its location: I know how to check if the selected location contains a circle (by managing a list of all the locations containig circles...), but I dont know how exactly to delete it. Another question: should I call the method this.CreateGraphics() everytime the user double-clicks a location, as I wrote in my code snippet, or should I call it once on initialization?

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• What is '=>'? (C# Grammar Question)

  - by Daniel

  I was watching a Silverlight tutorial video, and I came across an unfamiliar expression in the example code. what is = ? what is its name? could you please provide me a link? I couldn't search for it because they are special characters. code: var ctx = new EventManagerDomainContext(); ctx.Events.Add(newEvent); ctx.SubmitChanges((op) => { if (!op.HasError) { NavigateToEditEvent(newEvent.EventID); } }, null);

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• How to restart the IIS Site when re-compiling an asp.net website

  - by Glennular

  What is the best way to add into the build/compile script of an Asp.net project to initiate a IIS to restart the website on DLL rebuild instead of the first request to the site. Current Process Compile Project Wait Hit APSX Page IIS starts reload Wait Page loads Ideal process: Compile Project & Reload IIS Wait Hit APSX Page Page loads The first way I though of was add a request to just hit one of the pages in the "Post-Build events". Just wondering best practices. This would be similar to "Start" which opens a page immediately on build.

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• How to break whenever any line of code executes

  - by Aequitarum Custos

  I have a very strange bug, which I believe is caused by some code we have executing, but I'm not sure where. We can reproduce it to the point it happens whenever we click Tab, but short of putting a break point at the beginning of every method in the project to find out what is executing. Is there a way to set visual studio to break whenever anything executes? For those curious about the problem, every now and then, we have a few Rich Text Boxes that refuse to lose focus. You can't click out of it or tab out of it. We have no On Validation or On Text Changed events attached to the control, and believe it's an event attached somewhere else to something we just aren't noticing.

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• window.onfocus and window.onblur not working in IE8

  - by AshokD

  Both the events are getting fired at the time onblur event. <script src="js/jquery-1.7.2.js" type="text/javascript"></script> <script language="javascript" type="text/javascript"> window.onfocus = function() { $('#msg').html($('#msg').html() + '<br/> focus'); }; window.onblur = function() { $('#msg').html($('#msg').html() + '<br/> Blur'); }; </script> <div id="msg"> </div>

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• Resources for dashboard app backend design

  - by Nix

  I am looking for examples of code/data/infrastructure design for a dashboard-style webapp. I am designing an interface for staff and faculty at a university to access departmental resources and be alerted of cyclical processes, events, deadlines, etc. Technologies I am working with: apache tomcat 6 and a mySQL database, JSP (including JSTL), bootstrap 3, and javascript/jquery. I have basic experience most of these technologies building smaller web apps but was hoping someone could direct me towards a book or other resource that discusses how to design the db architecture (and maybe how to template) for a dashboard, esp. for something like a notification systems. Any suggestions?

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• Jquery remove and add back click event

  - by London

  Is it possible to remove than add back click event to specific element? i.e I have a $("#elem").click(function{//some behaviour});, $(".elem").click(function{//some behaviour});(there are more than 1 element) while my other function getJson is executing I'd like to remove the click event from the #elem, and add it again onsuccess from getJson function, but preserve both mouseenter and mouseleave events the whole time? Or maybe create overlay to prevent clicking like in modal windows? is that better idea? edit : I've seen some really good answers, but there is one detail that I omitted not on purpose. There are more than one element, and I call the click function on the className not on elementId as I stated in the original question

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• Why do debug symbols so adversely affect the performance of threaded applications on Linux?

  - by fluffels

  Hi. I'm writing a ray tracer. Recently, I added threading to the program to exploit the additional cores on my i5 Quad Core. In a weird turn of events the debug version of the application is now running slower, but the optimized build is running faster than before I added threading. I'm passing the "-g -pg" flags to gcc for the debug build and the "-O3" flag for the optimized build. Host system: Ubuntu Linux 10.4 AMD64. I know that debug symbols add significant overhead to the program, but the relative performance has always been maintained. I.e. a faster algorithm will always run faster in both debug and optimization builds. Any idea why I'm seeing this behavior?

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• When is it safe to do a Response.Redirect() without throwing an exception?

  - by DDechant

  I have an intermediary class extending System.Web.UI.Page for all of my pages that require authentication. The class mostly does custom authentication handling. When a user with insufficient access attempts to visit a page, I try to redirect the user back to the login page while preventing any further page events from being executed (ie. Page_load). The first solution that came to mind was the default implementation of Response.Redirect. Of course the downside to this is the possibility of ThreadAbortExceptions being thrown. So my question is this: When (if at all) during the page life cycle is it actually safe to execute Response.Redirect() without ThreadAbortException ever being thrown? public class CustomPage : System.Web.UI.Page { protected override void OnInit(EventArgs e) { base.OnInit(e); if (!IsValid()) Response.Redirect("login.aspx", true); } }

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• onbeforeunload dilemma: iframe breaking vs. annoying message on refresh/back buttons click

  - by Tossapol

  I'm implementing a search service called SearchInsideOut. http://bit.ly/97SFyW This search service simply replaces web page results by full web pages (Yes, I used iframe). The problem I have to deal with is iframe-breaking pages. The promising solution I found is using onbeforeunload to let users decide whether to stay or leave my site. But this also creates another annoying behavior. When users click other links in my site, onbeforeunload will also be triggered. Fortunately, I could solve this case by placing window.onbeforeunload=null in the onclick event of those links of my site. Unfortunately, I have no idea how to detect external events like clicking "refresh/back" buttons. What should I do to solve this difficulty? All suggestions and comments are highly appreciated.

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• Better understanding of my SQL transactions

  - by Slew Poke

  I just realized that my application was needlessly making 50+ database calls per user request due to some hidden coding -- hidden in the sense that between LINQ, persistence frameworks and events it just so turned out that a huge number of calls were being made without me being aware. Is there a recommended way to analyze individual transactions going to my SQL 2008 database, preferably with some integration to my Visual Studio 2010 environment? I want to be able to 'spy' on individual transactions being made, but only for certain pieces of my code, and without making serious changes to either the code or database.

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• OpenSocial and its usages

  - by Paul Knopf

  I have looked for some explanation on the exact usages for the set of standards known as OpenSocial. I need some clarification if I can use OpenSocial like the following. I would like to create one library used to community with an OpenSocial api for use in my website that will not 'behave' like an application described by common sites like facebook and myspace. I'm not making a myspace of facebook application, I'm creating my own website and I want users to be able to find friends. I would like to allow users to store usernames and passwords for various OpenSocial-supported social networks. I would also like to use the api to sync events from my web site to their specified social network. I would also like to allow my users to view a list of friends and invite them. Is it possible to create one library that supports OpenSocial and simple "point" to and social network that supports it to get a list of friends and etc?

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• Codeigniter view file looping query

  - by user2505513

  Right, I'm unsure about how to code my view file to generate following query results WITHOUT compromising the principles of mvc. Query in model: SELECT * FROM events GROUP BY country, area ORDER BY country, area View: <?php if (isset($query)):?> <?php foreach ($query as $row):?> <h2><?=$row->country?></h2> <h3><?=$row->area?></h3> <?php endforeach;?> <?php endif;?> I want the results to display: England North South West - utilising the GROUP BY parameter As opposed to: England North England South England West Has anybody any advice as to how to achieve this?

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• Modifying object in AfterInsert / AfterUpdate

  - by Jean Barmash

  I have a domain object that holds results of a calculation based on parameters that are properties of the same domain object. I'd like to make sure that any time parameters get changed by the user, it recalculates and gets saved properly into the database. I am trying to do that with afterInsert (to make sure calculation is correct in the first place), and afterUpdate. However, since my calculation is trying to modify the object itself, it's not working - throwing various hibernate exceptions. I tried to put the afterUpdate code into a transaction, but that didn't help. I am afraid I am getting into a circular dependency issues here. The exception I am getting right now is: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [esc.scorecard.PropertyScorecard#27] Are the GORM events designed for simpler use cases? I am tempted to conclude that modifying the object you are in the middle of saving is not the way to go.

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• iPhone + OpenGL + Touches: FPS drop

  - by Anton

  Hey there, Recently I ran into a very strange issue: touching the screen of the iPhone and moving a finger around can eat up to 50% of my FPS. Yeah, I checked my code for possible bottlenecks – not the issue. The last resort I tried before writing this post – commenting out all the touch processing code and looking at FPS then. Results are: no touches – 58-60. Touching and moving the finger – 35-40 FPS instantly. The rendering is done in a separate thread, so that no main runloop events shall collide with it. However, it's very crushial for me (and the game I develop) to resolve this issue, because such FPS drop is really noticeable. Thank you for your help in advance. UPDATE: seems that setting rendering thread's priority to higher value helps a bit...

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• How would you create a notification system like on SO or Facebook in RoR?

  - by Justin Meltzer

  I'm thinking that notifications would be it's own resource and have a has_many, through relationship with the user model with a join table representing the associations. A user having many notifications is obvious, and then a notification would have many users because there would be a number of standardized notifications (a commenting notification, a following notification etc.) that would be associated with many users. Beyond this setup, I'm unsure how to trigger the creation of notifications based on certain events in your application. I'm also a little unsure of how I'd need to set up routing - would it be it's own separate resource or nested in the user resource? I'd find it very helpful if someone could expand on this. Lastly, ajax polling would likely improve such a feature. There's probably some things I'm missing, so please fill this out so that it is a good general resource.

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• Android canceling all alarm set

  - by spagi

  Hi all. I am making an event application and user can set a reminder for events he wants. So i use the alarmManager to create alarms. I would like to put a cancel all option to my main activity so that i could cancel all the alarms created by my application. The usual method for canceling the alarm with the same intent doesnt really help cause i set tha alarms on a different activity than the one I want to cancel them in. So is there a way to cancel all the alarms created by my application? Thanks!

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• Changing Clickonce source folder

  - by henginy

  We copy our production build in a separate folder using post-build events, and replace the app.config file with our production app.config. However Clickonce reads the files in bin\Release folder. I have also tried copying all files from our custom build location to bin\Release folder in the post-build event, but app.config is still overridden (I guess clickonce re-builds the project into bin\Release). Is it possible to tell Clickonce to read from our custom folder? Or, if that's not the right way to go, how do you handle this kind of situation?

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• How to run xunit in Visual Studio 2012?

  - by user1978421

  I am very new to unit testing. I have been following the procedures for creating a unit test in visual studio 2012 on http://channel9.msdn.com/Events/TechEd/Europe/2012/DEV214. The test just won't start. And it will prompt me "A project with an Output Type of Class Library cannot be started directly. In order to debug this project, add an executable project to this solution which references the library project. Set an executable project as the startup project. Even though I attached the unit test class code to a console program, the test does not start and the test explorer is empty. In the video, it doesn't need to have any running program. The lady only created a class library, and the test will run. what should I do? Note. there is no "create unit test" on the mouse right click menu

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• Setting Focus with ASP.NET AJAX Control Toolkit

  - by Jonathan S.

  I'm using the AutoComplete control from the ASP.NET AJAX Control Toolkit and I'm experiencing an issue where the AutoComplete does not populate when I set the focus to the assigned textbox. I've tried setting the focus in the Page_Load, Page_PreRender, and Page_Init events and the focus is set properly but the AutoComplete does not work. If I don't set the focus, everything works fine but I'd like to set it so the users don't have that extra click. Is there a special place I need to set the focus or something else I need to do to make this work? Thanks.

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• Linq To SQL: Retain list order when using .Contains

  - by rockinthesixstring

  I'm using Lucene.net to build a MyListOfIds As List(Of Integer) which I then pass on to my Linq service. I then search the database as follows Return _EventRepository.Read().Where(Function(e) MyListOfIds.Contains(e.ID)).ToList Now I know that Lucene is already ordering MyListOfIds based on the weight it gave each term. What sucks is that Linq is losing that order in it's SQL search. My Question: How can I retain that sort order when building my Lambda expression? I tried using LINQPad to see how the query is being built, but because I had to declare a variable LINQPad didn't show me the resultant SQL :-( Here's what I tried in LINQPad Dim i As New List(Of Integer) i.Add(1) i.Add(100) i.Add(15) i.Add(3) i.Add(123) Dim r = (From e In Events Where i.Contains(e.ID) Select e) note: my example is in VB.NET, but I don't mind if responses are in C#

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• Question about Modal Dialog in Gtk application

  - by michael

  Hi, In Gtk application, there is 1 main loop which listens for events (e.g. mouse click, keyboard, etc). And when a modal dialog popup, the main loop is blocked until user clicks 'OK' in the dialog, right? (i.e. nothing will happen when user clicks on the main window). Is that correct? My question is how can firefox did its modal dialog so that it can: 1. when 1 have 2 Firefox windows 2. one of them has a modal dialog 3. other one is still interactive If both window shares the same gtk main loop, how is that possible? Please help me understanding this. Thank you.

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