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• Breaking changes in .NET 4.0

  - by Andrei Taptunov

  There is a lot of information about new features and classes in new 4.0 however there are also changes that may affect esixting applications, for example Timespan now implements IFormattable and old string.Format() with invalid options will throw exception instead of calling simple ToString(). However, CLR team provides a nice feature to enable behaviour from previous version with configuration setting - TimeSpan_LegacyFormatMode . CLR Inside Out Access to events inside the class where they are declared using += or -= will lead to call add/remove generated accessors that return void. Some code wan't even compile in 4.0. Chris Burrows Blog CAS is deprecated and to enable it one still need to use special setting in configuration - NetFx40_LegacySecurityPolicy So I wonder what are other changes and is it possible to find at least preliminary list of changes that will or may break existing functionality with release of .NET 4.0 ?

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• What is the relaxation condition in graph theory

  - by windopal

  Hi, I'm trying to understand the main concepts of graph theory and the algorithms within it. Most algorithms seem to contain a "Relaxation Condition" I'm unsure about what this is. Could some one explain it to me please. An example of this is dijkstras algorithm, here is the pseudo-code. 1 function Dijkstra(Graph, source): 2 for each vertex v in Graph: // Initializations 3 dist[v] := infinity // Unknown distance function from source to v 4 previous[v] := undefined // Previous node in optimal path from source 5 dist[source] := 0 // Distance from source to source 6 Q := the set of all nodes in Graph // All nodes in the graph are unoptimized - thus are in Q 7 while Q is not empty: // The main loop 8 u := vertex in Q with smallest dist[] 9 if dist[u] = infinity: 10 break // all remaining vertices are inaccessible from source 11 remove u from Q 12 for each neighbor v of u: // where v has not yet been removed from Q. 13 alt := dist[u] + dist_between(u, v) 14 if alt < dist[v]: // Relax (u,v,a) 15 dist[v] := alt 16 previous[v] := u 17 return dist[] Thanks

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• how to parse jquery ajax xhtml response?

  - by steve

  Sorry if this has been posted many times. But I've tried many variations and it still doesn't work. The HTML comes back from the jquery AJAX call fine and I am trying to remove the header and footers from the response using: // none of these work for me $("#content", data); $("#content", $(data)); $(data).find("#content").html() I've breakpoint the response to verify the #content exists by inspected $(data) and using alert to print out the data's text. I've also try using "body" or "a" as selectors, but it always come back as undefined. I've read in this post that you can't pull in the full XHTML document: http://stackoverflow.com/questions/1050333/jquery-ajax-parse-response-text. But I can't find the answer's quote anymore, maybe it's outdated? Has anyone ran into this problem? Many thanks, Steve

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• Project name inserted automatically in url when using django template url tag

  - by thebossman

  I am applying the 'url' template tag to all links in my current Django project. I have my urls named like so... url(r'^login/$', 'login', name='site_login'), This allows me to access /login at my site's root. I have my template tag defined like so... <a href="{% url site_login %}"> It works fine, except that Django automatically resolves that url as /myprojectname/login, not /login. Both urls are accessible. Why? Is there an option to remove the projectname? This occurs for all url tags, not just this one.

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• Problem with implementing removeAll for List of custom object

  - by Jay

  Hello everyone, I have a scenario in my code where I need to compare two Lists and remove from the first list, objects which are present in the second list. Akin to how the "removeAll" object works for List. Since my List is created on a custom object, the removeAll method won't work for me. I have tried various methods to make this work: - implemented equals() and hashCode for the custom object comprising the list - implemented the Comparable Interface for the custom object - implemented the Comparator Interface for the custom object I've even tried using the Apache Common's CollectionUtils and ListUtils methods (subtract, intersect, removeAll). None seem to work. I understand I will perhaps need to write some custom removal code. But not sure how to go about doing that. Any pointers helping me move in the right direction will be really appreciated. Thanks, Jay

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• how to turn off fb_noscript?

  - by Murvinlai

  in my facebook FBML app, I have the flash connecting to the js (in FBJS) . I have set up the stuffs like that and working. However, sometimes, the bridge connection fails and I see thatin the URL, facebook attach the fb_noscript=1 parameter there. e.g. apps.facebook.com/myapp/?fb_noscript=1 when I remove it, and reload the apps, it is all good. I just don't know what I get the fb_noscript thing. and how to get rid of it.

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• how to turn off fb_noscript?

  - by Murvinlai

  in my facebook FBML app, I have the flash connecting to the js (in FBJS) . I have set up the stuffs like that and working. However, sometimes, the bridge connection fails and I see thatin the URL, facebook attach the fb_noscript=1 parameter there. e.g. apps.facebook.com/myapp/?fb_noscript=1 when I remove it, and reload the apps, it is all good. I just don't know what I get the fb_noscript thing. and how to get rid of it.

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• JQuery preventDefault() but still add the fragment path to the URL without navigating to the fragment

  - by jdln

  My question is similar to this one but none of the answers solve my problem: Use JQuery preventDefault(), but still add the path to the URL When a user clicks a fragment link, I need to remove the default behaviour of jumping to the fragment but still add the fragment to the URL. This code (taken from the link) will fire the animation, and then add the fragment to the URL. However the fragment is then navigated to, which im my case breaks my site. $("#login_link").click(function (e) { e.preventDefault(); $("#login").animate({ 'margin-top': 0 }, 600, 'linear', function(){ window.location.hash = $(this).attr('href'); }); });

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• Intercept a request to read a particular file and instead generate the apparent output of that file

  - by Mike Atkinson

  Sorry for the long and yet still somehow vague title! A friend of mine has a Flash Action script running on a LAMP server that currently reads an xml config file. He's asked me if it's possible to remove the xml file, and replace it somehow with a system (lets call it an 'auto xml generator') that intercepts the request to read that file and generates an output, so it appears to all intents and purposes as if the file still exists and contains the contents that has actually been returned from our auto xml generator Hours of Googling has failed to come up with any promising leads, can anyone offer any advice? Thanks very much! Mike

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• Jqgrid in a dialog window is not showing on the second calling

  - by Dennis

  I have this script below that will call my browse window; var $dialog = $('') .load('scripts/browsecharges.jsp') .dialog({ width: 800, height: 500, modal: false, title: 'Browse Charges', buttons: { Ok: function() { $(this).dialog('destroy'); } }, close: function(event, ui) { $(this).dialog('destroy').remove(); } }); $dialog.dialog('open'); This browse window contains a jqgrid in it. At first my jqgrid works fine, I can see the data. But calling this browse window for the second time, my jqgrid will not show anymore. What should I do to open it as many times as I want?

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• Does JSONP scale? How many JSONP requests can I send?

  - by Cheeso

  Based on Please explain JSONP, I understand that JSONP can be used to get around the same-origin policy. But in order to do that, the page must use a <script> tag. I know that pages can dynamically emit new script tags, such as with: <script type="text/javascript" language='javascript'> document.write('<script type="text/javascript" ' + 'id="contentloadtag" defer="defer" ' + 'src="javascript:void(0)"><\/script>'); var contentloadtag=document.getElementById("contentloadtag"); contentloadtag.onreadystatechange=function(){ if (this.readyState=="complete") { init(); } } </script> (the above works in IE, don't think it works in FF). ... but does this mean, effectively, that every JSONP call requires me to emit another <script> tag into the document? Can I remove the <script> tags that are done?

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• C# unit test code questions

  - by 5YrsLaterDBA

  We start use C# build-in unit test functionality. I have VisualStudio 2008 created unit test code for me. I have few question above the generated code. Following are code I copied from the generated file: #region Additional test attributes // //You can use the following additional attributes as you write your tests: // //Use ClassInitialize to run code before running the first test in the class //[ClassInitialize()] //public static void MyClassInitialize(TestContext testContext) //{ //} // //Use ClassCleanup to run code after all tests in a class have run //[ClassCleanup()] //public static void MyClassCleanup() //{ //} // //Use TestInitialize to run code before running each test //[TestInitialize()] //public void MyTestInitialize() //{ //} // //Use TestCleanup to run code after each test has run //[TestCleanup()] //public void MyTestCleanup() //{ //} // #endregion If I need the initialize and cleanup methods, do I need to remove those "My" from the method name when I enable them? //Use ClassInitialize to run code before running the first test in the class //[ClassInitialize()] //public static void MyClassInitialize(TestContext testContext) //{ //} Do I need to call the "MyClassInitialize" method somewhere before running the first test or it will be called automatically before other methods are called. Similar questions for other three methods, are they called automatically at right time frame?

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• Getting a 404 when setting up MVC in IIS 6 and using .NET 4 beta 2

  - by joshcomley

  Hi all, I've completed this set up on a fair few IIS 6 boxes, but one is giving me a tough time. The problem occurs when I add the application extension mapping to: c:\windows\microsoft.net\framework\v4.0.21006\aspnet_isapi.dll When this is in place, I get a 404 error on every request. Even if I remove all files from the application directory apart from a basic test.htm and navigate to that, I still get a 404. I've unchecked the "Verify that file exists" I've set up a .NET 4 application pool and pointed my application to that I've changed the ASP.NET version to 4.0.21006 I've checked the IIS log file, and there's nothing useful in there (it only shows the first bunch of requests after each reboot and then stops logging) I've checked the application event log and nothing gets reported I've installed MVC 2 I've copied the set up onto another box, just to be sure, following all the same steps - and it all works! What else can I look out for?? N.B: If I set .NET to v2 in IIS, then I can successfully navigate to \test.htm

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• C# GridView dynamically built columns with textboxes ontextchanged

  - by tnriverfish

  My page is a bulk order form that has many products and various size options. I've got a gridview that has a 3 static columns with labels. There are then some dynamically built columns. Each of the dynamically built columns have a textbox in them. The textbox is for quantity. Trying to either update the server with the quantity entered each time a textbox is changed (possibly ontextchanged event) or loop though each of the rows column by column and gather all the items that have a quantity and process those items and their quantities all at once (via button onclick). If I put the process that builds the GridView behind a if(!Page.IsPostBack) then the when a textchanged event fires the gridview only gets the static fields and the dynamic ones are gone. If I remove the if(!Page.IsPostBack) the process to gather and build the page is too heavy on processing and takes too long to render the page again. Some advice would be appreciated. Thanks

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• Jquery runtime error: object expected

  - by Joris

  The Jquery script that controls my tabcontainer gives an "object expected" runtime error. I honestly can't find the reason why: $(document).ready(function() { //When page loads... $(".tab_content").hide(); //Hide all content $("ul.tabs li:first").addClass("active").show(); //Activate first tab $(".tab_content:first").show(); //Show first tab content //On Click Event $("ul.tabs li").click(function() { $("ul.tabs li").removeClass("active"); //Remove any "active" class $(this).addClass("active"); //Add "active" class to selected tab $(".tab_content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the active tab + content $(activeTab).fadeIn(); //Fade in the active ID content return false; }); }); Has it something to do with the stylesheet?

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• jQuery.load() Retrieving partial page content causes duplicate ID in DOM

  - by Warren Buckley

  Hello all, I currently have a JS function that allows me to load partial content from another page into the current page using jQuery.load() However I noticed when using this that I get a duplicate ID in the DOM (when inspecting with FireBug) This function is used in conjuction with a Flash Building viewe so it does not contain any code to retrieve the URL from the anchor tag. function displayApartment(apartmentID) { $("#apartmentInfo").load(siteURL + apartmentID + ".aspx #apartmentInfo", function () { //re-do links loaded in $("a.gallery").colorbox({ opacity: "0.5" }); }); } The code above works just fine in retrieving the content, however it just bugs me that when inspecting with firebug I get something like this. <div id="apartmentInfo"> <div id="apartmentInfo"> <!-- Remote HTML here..... --> </div> </div> Can anyone please suggest anything on how to remove the duplicate div? Thanks, Warren

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• Unicode issue in Django

  - by Kave

  I seem to have a unicode problem with the deal_instance_name in the Deal model. It says: coercing to Unicode: need string or buffer, __proxy__ found The exception happens on this line: return smart_unicode(self.deal_type.deal_name) + _(u' - Set No.') + str(self.set) The line works if I remove smart_unicode(self.deal_type.deal_name) but why? Back then in Django 1.1 someone had the same problem on Stackoverflow I have tried both the unicode() as well as the new smart_unicode() without any joy. What could I be missing please? class Deal(models.Model): def __init__(self, *args, **kwargs): super(Deal, self).__init__(*args, **kwargs) self.deal_instance_name = self.__unicode__() deal_type = models.ForeignKey(DealType) deal_instance_name = models.CharField(_(u'Deal Name'), max_length=100) set = models.IntegerField(_(u'Set Number')) def __unicode__(self): return smart_unicode(self.deal_type.deal_name) + _(u' - Set No.') + str(self.set) class Meta: verbose_name = _(u'Deal') verbose_name_plural = _(u'Deals') Dealtype: class DealType(models.Model): deal_name = models.CharField(_(u'Deal Name'), max_length=40) deal_description = models.TextField(_(u'Deal Description'), blank=True) def __unicode__(self): return smart_unicode(self.deal_name) class Meta: verbose_name = _(u'Deal Type') verbose_name_plural = _(u'Deal Types')

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• Insert lecture number and page number of lecture in footline

  - by Liam

  I am dividing a semester's worth of lectures via the \lecture command. I'd like to have in the footline (among other things) the lecture number, date, and page number of the current lecture. I would also like to use the default style footline, with the black box on the left and the blue on the right. So I define a lecture with e.g. \lecture{January 28, 2010}{lecture01} with \title[Lecture \insertlecturenumber{}(\insertlecture)\quad{}Page \insertframenumber]{Course Title} in the preamble, I get an error; it will not accept \insertlecture there. If I remove \insertlecture, it does what I want, except that the page number is counted from the start of the semester, not the lecture. Is there any way to do this? Thank you. Liam

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• Replace empty cells with logical 0's before cell2mat in MATLAB

  - by Doresoom

  I've got a cell array of empty cells and ones that I want to convert to a logical array, where the empty cells are zeros. When I use cell2mat, the empty cells are ignored, and I end up with a matrix of solely 1's, with no reference to the previous index they held. Is there a way to perform this operation without using loops? Example code: for n=1:5 %generate sample cell array mycellarray{n}=1; end mycellarray{2}=[] %remove one value for testing Things I've tried: mylogicalarray=logical(cell2mat(mycellarray)); which results in [1,1,1,1], not [1,0,1,1,1]. for n=1:length(mycellarray) if isempty(mycellarray{n}) mycellarray{n}=0; end end mylogicalarray=logical(cell2mat(mycellarray)); which works, but uses loops.

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• inno setup - registry key vs. .ini files

  - by PPTim

  Hi, Dabbling with creating an installer with inno setup- but wondering: What are the pros and cons of using registry keys (windows program) vs. .ini files that sit within the program folder? If I store all my user settings in .ini files, the entire program can be removed by deleting the folder. With registry keys i'd have to create an uninstaller / remove the key manually. Why is it that most commercial applications use registry values? I know from brief use of Macs that most programs are drag and drop. Are one of the major reasons because of the lack of a registry key in mac OS?

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• AJAX in Drupal Forms?

  - by Kevin

  How would you go about constructing a step by step form that uses AJAX through Drupal to pull the next form step? For example, Step 1: I like Baseball I don't like Baseball. When that person clicks on either Like or Don't Like, I want to use AJAX to recognize and pull the next part of the form, remove/hide the first section since its not needed, and present the next section. Example: Step 1: I like Baseball *click (fade out) Step 2: My favorite team is __________ The player I like most is __________ What is the best way to do this through Drupal Form API? I know how to build the forms and modules, but I have never used AJAX yet. I know a few things exist out there that are supposed to help, but I wanted to know if anyone here has done it and how they approached it.

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• hpricot throws exception when trying to parse url which has noscript tag

  - by anusuya

  I use hpricot gem in ruby on rails to parse a webpage and extract the meta-tag contents. But if the website has a <noscrpit> tag just after the <head> tag it throws an exception Exception: undefined method `[]' for nil:NilClass I even tried to update the gem to the latest version. but still the same. this is the sample code i use. require 'rubygems' require 'hpricot' require 'open-uri' begin index_page = Hpricot(open("http://sample.com")) puts index_page.at("/html/head/meta[@name='verification']")['content'].gsub(/\s/, "") rescue Exception => e puts "Exception: #{e}" end i was thinking to remove the noscript tag before giving the webpage to hpricot. or is there anyother way to do it??

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• Upgrading Visual Studio 2010 RC to RTM

  - by Brant Bobby

  I have the RC build of VS2010 installed on my computer. Now that the RTM build is out, I want to upgrade. Aside from the main Visual Studio package and .NET Framework 4, what else should I remove before I install the RTM build in order to minimize potential breakage/conflicts? VS2010 installs a whole bunch of ancillary packages and I'm not sure which ones have been upgraded between RC and RTM. (Extra credit: I've got another machine that is still running Beta 2. Would the procedure be the same?)

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• Creating Windows Desktop Icon in CMake + CPack + NSIS

  - by Simeon Fitch

  I'm using NSIS package generator in CMake 2.8.1 to distribute a Qt application. Everything is working fine... except the use of CPACK_CREATE_DESKTOP_LINKS to create a desktop link to the application. I've looked through the CMake source (including it's own "bootstrap" installation definition for windows), and as far as I can tell I'm doing the same thing. Here's the relevant section of my CMakeLists.txt file. set(CPACK_GENERATOR NSIS) set(CPACK_NSIS_PACKAGE_NAME "${EWS_APP_NAME}") set(CPACK_NSIS_DISPLAY_NAME "${EWS_APP_NAME}") set(CPACK_NSIS_CONTACT "${EWS_EMAIL}") set(CPACK_PACKAGE_EXECUTABLES "${EXE_TARGET_NAME}" "${EWS_APP_NAME}") set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "${CMAKE_PROJECT_NAME}-${EWS_VERSION}") # this works set(CPACK_NSIS_MENU_LINKS "${EWS_WEBSITE}" "Homepage for ${EWS_APP_NAME}") # this doesn't set(CPACK_CREATE_DESKTOP_LINKS "${EXE_TARGET_NAME}") # Icon in the add/remove control panel. Must be an .exe file set(CPACK_NSIS_INSTALLED_ICON_NAME bin\\\\${EXE_TARGET_NAME}.exe) set(CPACK_NSIS_URL_INFO_ABOUT "${EWS_WEBSITE}") set(CPACK_NSIS_HELP_LINK "${EWS_WEBSITE}") Any ideas or debugging tips are appreciated!

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• Connecting to a WCF Service in PHP that has a a NetTCP Binding and a BasicHttpBinding

  - by Justin Dearing

  I have a WCF service. It has multiple clients and three endpoints. The endpoint bindings are nettcp, wsHttp and basicHttp. If I attempt to connect to it via php'd builtin SoapClient class like so: $service = new SoapClient ("http://service.companyname.local:6666/Service/?wsdl", array( "location" => "http://service.companyname.local:6666/Service/Basic", "trace" => true, 'soap_version' => SOAP_1_1 ) ); I get the following: PHP Fatal error: SOAP-ERROR: Parsing WSDL: PHP-SOAP doesn't support transport 'http://schemas.microsoft.com/soap/tcp' in c:\www\client.php on line 666 Right now my workaround is to save the wsdl manually and remove the nettcp binding. Is there a workaround that will allow me to use the automatically generated wsdl? Can I hide a binding from the wsdl in web.config? Can I generate different wsdls on different bindings. I don't want to deploy two service hosts.

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