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• WCF Blocking problem with mutiple clients!!

  - by Marcel

  Hi I seem to have a blocking issue with WCF. Say I have two users and each have created their own instance of a class exposed on a WCF host using net.tcp with endpoint something like this "net.tcp://localhost:32000/SymHost/". The class is PerSession context and concurrency is reentrant. The class exposes two methods Alive() which return a bool of true straight away and an AliveWait which I inserted which does a Thread.Sleep for 4 seconds before returning true (testing purposes). Now client 1 calls AliveWait() during which time he is blocked which is fair enough but then if client 2 makes a call to Alive() on its own instance he has to wait until client 1's call is returned - this behaviour is not what I would have expected? I would have expected client 2 to carry on as if nothing has happened or is this to do with the fact that they both share the same endpoint? Can anyone explain what is going on and how I can make sure that client 2 can call its own instance uninterrupted? Any help much appreciated!

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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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• 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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• 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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• iPhone status bar orientation with opengl

  - by sfider

  I have opengl only view that displays in portrait and landscape mode using projection matrix (view's transformation is identity all the time). I need to show status bar with proper orientation. I do this by setting status bar orientation property in UIApplication and changing frame of opengl view so the view won't go under status bar. When I change from landscape to portrait (landscape is the initial state) view's frame is set to (0, 20, 320, 460) and stays like this. However view appears to be translated by (-10, -10). It seems that I did change the size of view but couldn't move it. Weird things are: initialy view is full screen, I change it to (0, 0, 300, 480) (landscape with status bar) and it works then, it doesn't work when I try to chenge it for the second time (portrait with status bar) frame property of the view shows that view is placed correctly Any thoughts on what can by the problem?

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• Hyperlinks to download files without stopping the current page load

  - by Evgeny

  I've got an ASP.NET page that takes a long time to download and returns partial results as it's loading (as per my previous question). On the page I have some links to download files, ie. the response headers contain "Content-Disposition: attachment", so that the browser doesn't navigate away from the page. However, if the user clicks one of these links while the page is still loading it stops loading - normal behaviour, but not what I want in this case. I can get around that by adding target=_"blank" to the links, but this momentarily opens a new window and the closes it again (once the browser realises it's an "attachment"). Is there any way to avoid having those links stop the current page load without this new window trick? JavaScript is OK.

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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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• Modifications in default document (ASP.NET+IIS7) won't take effect

  - by Wilson

  We have a website developed by ASP.NET+IIS7 and its default document is default.aspx. It works fine. But when we tried to switch the default to index.html, weird things happened. We have modified web.config as follows: <defaultDocument> <files> <clear /> <add value="index.html" /> </files> </defaultDocument> and we have clear everything under C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files``, and restart the worker process. We even changed the name of Default.aspx to dddd.aspx. But everything stays the same when accessing with http://localhost/<MyAppName>/! And when we tried to access with http://localhost/<MyAppName>/index.html, it works fine. Any suggestions would be highly appreciated.

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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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• Getting started with Express - Error: Cannot find module './routes'

  - by Enrico Tuttobene

  I am just getting started in the world of Node.JS, and I tried using the command line "express" command to install a basic application (with jade support) Now, I was playing around with it a bit to see how it works and I am coming across a strange error: In the /routes directory there is a file called index which contains exports.index = function(req, res){ res.render('index', { title: "Express" }); }; that, as you all know, renders the index page. Well, all I did was renaming that file from index.js to router.js, so that I can easily refer to it as I would like to have more than just an index page. The renaming doesn't work, I get the error Error: Cannot find module './routes' Which is weird, as I though that var express = require('express'), routes = require('./routes'); would require ALL the files in the directory. There must be something small there I'm missing, and please bare with me as I am pretty new to this. Thanks in advance.

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• Why is QProcess converting the '=' in my arguments to spaces

  - by dagorym

  I've run into a weird error with a Qt program running on Windows. The program uses QProcess to spawn a child process wit two arguments. The program and arguments passed to the QProcess::start() method are of the form: "batchfile.bat" "--option1=some_value" "--option2=some_other_value\with_a\path" For some reason by the time those options get to the batchfile for processing the equals signs have been converted to spaces and it now looks like: "batchfile.bat" "--option1 some_value" "--option2 some_other_value\with_a\path" because of this, the processing fails. Any ideas what could be causing the equal signs to be replaced by spaces? I'm using the mingw build of the QT 4.6.3 framework found on the Qt download page.

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• Drag drop open file in Macvim split window?

  - by Jon

  Hello. I like to use the split window feature in Vim. However I cannot seem to drag drop new files into the different sections. Doing so will just open a new tab. I don't like using tabs as I still need to flick between them and not much different to using separate windows. Is there anyway I can change this behaviour? It works fine on Windows gVim and Im using the same vimrc file.

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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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• C# Windows Forms Print Dialog box click OK twice to respond

  - by sbartlett007

  I'm using Visual Studio 2008, .net Framework 3.5 for a Windows forms client-server app that I'm working on. There is a weird bug when I run the program and try to print. The print dialog box opens, but I have to click the OK button twice for it to work. After the second click it works fine, no errors. When I put a breakpoint on: if (result == DialogResult.OK) , the breakpoint doesn't trigger until the second click. Here is the code: private void tbPrint_Click(object sender, EventArgs e) { try { printDialog1.Document = pDoc; DialogResult result = printDialog1.ShowDialog(); if (result == DialogResult.OK) { pDoc.PrinterSettings.PrinterName = printDialog1.PrinterSettings.PrinterName; pDoc.Print(); } ... This is driving me crazy, and I can't see anything else that would interfere with it.

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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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• Trouble getting Android emulator to run in eclipse

  - by Sharonix

  Hi there, I'm new to Android and Eclipse. I'm Trying to run the SDK Samples on the Emulator in Eclipse 3.5 Most of the time the AVD Manager hangs when I try to create a new AVD. When I manage to create an AVD and try to start the emulator I get this: emulator: ERROR: no search paths found in this AVD's configuration weird, the AVD's config.ini file is malformed. Try re-creating it. I'm running the latest version of the SDK on Win7 32 bit. Any Ideas?

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• where should we place HIDDEN variable in JSP

  - by micheal

  I need to use Hidden variables in my JSP for session tracking. this is the code: <input type="hidden" name="REQ_TOKEN" value="<%=session.getAttribute("SESN_TOKEN").toString()%>" /> i am using this to compare the request token with session token, so only when both are equal i will evaluate that request otherwise i will throw an error. Now the problem is, when i place this code inside <form></form> tags, it is working fine. Unfortunately there are some JSPs in my application where we dont have tag(I know that sounds weird!). where can i place my code so that it will work? Cant i use Hidden variables without FORM tag???

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• VSTS 2008 Load testing, Is it any good?

  - by anshu

  I have already spent couple of weeks trying to use this tool to generate some webtest and load test. But every day it throws a weird problem for which I do not find anything in document. examples: Hidden variables (_lastfocus) not found in the context error. Today, all of sudden it is now refusing to run some of the webtest which are part of the test mix in my load test run (is working fine with another load test). Are enterprise level, expensive tools are only good? (like loadrunner, silkperformer etc).

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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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• 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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• 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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• visual studio 2005 is deleting the .svn folder in the bin\Debug directory - how to prevent this?

  - by M K Saravanan

  For some reason I need to check in a couple of files in the bin\Debug directory. For the past few weeks, I am noticing a strange behaviour from VS2005. Every time I recompile the code, it is deleting the .svn folder in the bin\Debug directory and hence svn is showing "obstructed" error. Even svn clean up doesn't help due to missing .svn folder. Is there any settings on VS2005 to prevent this? In the first place, why it is deleting .svn folder? This thread http://svn.haxx.se/tsvnusers/archive-2008-10/0019.shtml discuss about it but no useful solution to prevent this from happening. Any other suggestions?

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• Why does `intval(1990)` equal `1989`?

  - by George Edison

  Boy, this one is really weird. I expect the following code to print 1990, but it prints 1989! $val = '$19.9'; $val = preg_replace('/[^\d.]/','',$val); $val = intval($val * 100); echo $val; Why on earth is this happening? Edit: and this code: $val = '$19.9'; $val = preg_replace('/[^\d.]/','',$val); echo $val . "<br>"; $val = $val * 100; echo $val . "<br>"; $val = intval($val); echo $val; Prints: 19.9 1990 1989 Why does intval(1990) equal 1989???

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• vim opens my folds on paste. how to prevent that ?

  - by Stefano Borini

  There's something weird going on in my fortran folding. This is the example file module foo contains subroutine hello() end subroutine hello subroutine hello() end subroutine subroutine hello() end subroutine end module foo subroutine hello() end subroutine subroutine hello() end subroutine subroutine hello() end subroutine and this is the vimrc syntax on au! BufRead,BufNewFile *.f90 setfiletype fortran set foldmethod=syntax let fortran_fold=1 The annoying thing is the following. If I cut (dd) and paste (P) a folded subroutine outside the module/end module block, the freshly pasted fold stay closed. If I paste it inside the module/end module block, the newly pasted folded region appears instead unfolded. Can you reproduce the issue (vim 7.2 here) and do you know any workaround/fix ?

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• Jrun Server crashes when a page has cfform,cfgrid,cflayout etc..

  - by kayteen

  Hi, I am having a weird problem. I have a application that works perfect in my development machine and UAT machine which is of windows 2003 server/cf8. When i uploaded the same application on Solaris box with CF8, and access the site it works perfect until i hit the page that has CFFORM, CFLAYOUT, CFGRID.. etc.. The Jrun Server just crashes[jrpp-2 unexpected constant#48...]. There is nothing available in any of the logs. Please help me how to resolve this thing...!! Thanks, Bittoo More Info: http://forums.adobe.com/thread/605411?tstart=0

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