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• WPF Validation in an ElementHost control

  - by Jon Mitchell

  I've got a WinForms form that contains an ElementHost control (which contains a WPF UserControl) and a Save button. In the WPF UserControl I've got a text box with some validation on it. Something like this... <TextBox Name="txtSomething" ToolTip="{Binding ElementName=txtSomething, Path=(Validation.Errors).[0].ErrorContent}"> <Binding NotifyOnValidationError="True" Path="Something"> <Binding.ValidationRules> <commonWPF:DecimalRangeRule Max="1" Min="0" /> </Binding.ValidationRules> </Binding> </TextBox> This all works fine. What I want to do however, is disable the Save button while the form is in an invalid state. Any help would be greatly appreciated.

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• AD Stopping a Script and Writing a Value to a User's AD Account PPT Presentation

  - by Steven Maxon

  ‘This will launch the PPT in a GPO Dim ppt Set ppt = CreateObject("PowerPoint.Application") ppt.Visible = True ppt.Presentations.Open "C:\Scripts\Test.pptx" ‘This is the batch file at the end of the PPT that records the date, time, computer name and username echo "Logon Date:%date%,Logon Time:%time%,Computer Name:%computername%,User Name:%username%" >> \\servertest\g$\Tracking\LOGON.TXT ‘This is what I need but can’t find: I need the script to check a value in the Active Directory user’s account in the Web page: attribute that would shut off the script if the user has already competed reading the presentation. Could be as simple as writing XXXX. I need the value XXXX written to the Active Directory user’s account in the Web page: attribute when they finish reading the presentation after they click on the bat file so the script will not run again when they log in.

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• OpenGL - Frustum not culling polygons beyond far plane

  - by Pladnius Brooks

  I have implemented frustum culling and am checking the bounding box for its intersection with the frustum planes. I added the ability to pause frustum updates which lets me see if the frustum culling has been working correctly. When I turn around after I have paused it, nothing renders behind me and to the left and right side, they taper off as well just as you would expect. Beyond the clip distance (far plane), they still render and I am not sure whether it is a problem with my frustum updating or bounding box checking code or I am using the wrong matrix or what. As I put the distance in the projection matrix at 3000.0f, it still says that bounding boxes well past that are still in the frustum, which isn't the case. Here is where I create my modelview matrix: projectionMatrix = glm::perspective(newFOV, 4.0f / 3.0f, 0.1f, 3000.0f); viewMatrix = glm::mat4(1.0); viewMatrix = glm::scale(viewMatrix, glm::vec3(1.0, 1.0, -1.0)); viewMatrix = glm::rotate(viewMatrix, anglePitch, glm::vec3(1.0, 0.0, 0.0)); viewMatrix = glm::rotate(viewMatrix, angleYaw, glm::vec3(0.0, 1.0, 0.0)); viewMatrix = glm::translate(viewMatrix, glm::vec3(-x, -y, -z)); modelViewProjectiomMatrix = projectionMatrix * viewMatrix; The reason I scale it by -1 in the Z direction is because the levels were designed to be rendered with DirectX so I reverse the Z direction. Here is where I update my frustum: void CFrustum::calculateFrustum() { glm::mat4 mat = camera.getModelViewProjectionMatrix(); // Calculate the LEFT side m_Frustum[LEFT][A] = (mat[0][3]) + (mat[0][0]); m_Frustum[LEFT][B] = (mat[1][3]) + (mat[1][0]); m_Frustum[LEFT][C] = (mat[2][3]) + (mat[2][0]); m_Frustum[LEFT][D] = (mat[3][3]) + (mat[3][0]); // Calculate the RIGHT side m_Frustum[RIGHT][A] = (mat[0][3]) - (mat[0][0]); m_Frustum[RIGHT][B] = (mat[1][3]) - (mat[1][0]); m_Frustum[RIGHT][C] = (mat[2][3]) - (mat[2][0]); m_Frustum[RIGHT][D] = (mat[3][3]) - (mat[3][0]); // Calculate the TOP side m_Frustum[TOP][A] = (mat[0][3]) - (mat[0][1]); m_Frustum[TOP][B] = (mat[1][3]) - (mat[1][1]); m_Frustum[TOP][C] = (mat[2][3]) - (mat[2][1]); m_Frustum[TOP][D] = (mat[3][3]) - (mat[3][1]); // Calculate the BOTTOM side m_Frustum[BOTTOM][A] = (mat[0][3]) + (mat[0][1]); m_Frustum[BOTTOM][B] = (mat[1][3]) + (mat[1][1]); m_Frustum[BOTTOM][C] = (mat[2][3]) + (mat[2][1]); m_Frustum[BOTTOM][D] = (mat[3][3]) + (mat[3][1]); // Calculate the FRONT side m_Frustum[FRONT][A] = (mat[0][3]) + (mat[0][2]); m_Frustum[FRONT][B] = (mat[1][3]) + (mat[1][2]); m_Frustum[FRONT][C] = (mat[2][3]) + (mat[2][2]); m_Frustum[FRONT][D] = (mat[3][3]) + (mat[3][2]); // Calculate the BACK side m_Frustum[BACK][A] = (mat[0][3]) - (mat[0][2]); m_Frustum[BACK][B] = (mat[1][3]) - (mat[1][2]); m_Frustum[BACK][C] = (mat[2][3]) - (mat[2][2]); m_Frustum[BACK][D] = (mat[3][3]) - (mat[3][2]); // Normalize all the sides NormalizePlane(m_Frustum, LEFT); NormalizePlane(m_Frustum, RIGHT); NormalizePlane(m_Frustum, TOP); NormalizePlane(m_Frustum, BOTTOM); NormalizePlane(m_Frustum, FRONT); NormalizePlane(m_Frustum, BACK); } And finally, where I check the bounding box: bool CFrustum::BoxInFrustum( float x, float y, float z, float x2, float y2, float z2) { // Go through all of the corners of the box and check then again each plane // in the frustum. If all of them are behind one of the planes, then it most // like is not in the frustum. for(int i = 0; i < 6; i++ ) { if(m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; // If we get here, it isn't in the frustum return false; } // Return a true for the box being inside of the frustum return true; }

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• Problems with animateAlong in IE7

  - by Andrei

  Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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• ASP.NET AJAX UpdatePanel problem

  - by Velika

  I'll try and be concise: 1) I have a dropdownlist with Autopostback set to TRUE 2) I have an UpdatePanel that contains a Label. 3) When the downdownlist selection is changed, I want to update the label. Problem: Focus is lost on the dropdownlist, forcing the user to click on the dropdownlist to reset focus back to the control. My "solution": In the DropDownList_SelectionChanged event, set focus back to the drop down list: dropdownlist1.focus() Problem: While this works great in IE, Firefox and Chrome change the scroll position such that the control which was assigned focus is positioned at the bottom on the visible portion of the browser window. This is often a very disorientating side effect. How can this be avoided so it works in FF as it does in IE?

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• Hiding privates from Javascript Intellisense

  - by Robert Koritnik

  Is it possible to hide certain functions/fields from displaying in javascript intellisense drop down list in Visual Studio 2008? Either by javascript documentaion XML of by naming privates in a certain way? I've seen <private /> in jquery vsdoc file that implies exactly this behaviour, but doesn't meet my expectations { __hiddenField: 0, /// <private /> increment: function(){ /// <summary>Increments a private variable</summary> __hiddenField++; } } But since fields can't contain documentation (because they have no body) they have to be documented at the top. But still doesn't work: { /// <field name="__hiddenField" type="Number" private="true">PRIVATE USE</field> __hiddenField: 0, increment: function(){ /// <summary>Increments a private variable</summary> __hiddenField++; } } Impossible is a perfectly possible answer and will be accepted if you have the knowledge that it's actually not possible.

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• rails3 link_to :with attribute?

  - by z3cko

  i am wondering if the :with attribute is removed from rails3 since i cannot find anything in the rails3 api - http://rails3api.s3.amazonaws.com anyone has a clue or give a hint on how to use the :with parameter to send data with a link_to non-working example: = link_to "Foo", {:action => "filter", :filter => "filter1",:with => "'test='+$('search').value"}, :remote => true, :class => "trash unselected", :id => "boo" thanks!

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• Cannot format first column in WxPython's ListCtrl

  - by Matt Clarke

  If I set the format of the first column in a ListCtrl to align centre (or align right) nothing happens. It works for the other columns. This only happens on Windows - I have tested it on Linux and it works fine. Does anyone know if there is a work-round or other solution? Here is an example based on code found at http://zetcode.com/wxpython/ import wx import sys packages = [('jessica alba', 'pomona', '1981'), ('sigourney weaver', 'new york', '1949'), ('angelina jolie', 'los angeles', '1975'), ('natalie portman', 'jerusalem', '1981'), ('rachel weiss', 'london', '1971'), ('scarlett johansson', 'new york', '1984' )] class Actresses(wx.Frame): def __init__(self, parent, id, title): wx.Frame.__init__(self, parent, id, title, size=(380, 230)) hbox = wx.BoxSizer(wx.HORIZONTAL) panel = wx.Panel(self, -1) self.list = wx.ListCtrl(panel, -1, style=wx.LC_REPORT) self.list.InsertColumn(0, 'name', wx.LIST_FORMAT_CENTRE,width=140) self.list.InsertColumn(1, 'place', wx.LIST_FORMAT_CENTRE,width=130) self.list.InsertColumn(2, 'year', wx.LIST_FORMAT_CENTRE, 90) for i in packages: index = self.list.InsertStringItem(sys.maxint, i[0]) self.list.SetStringItem(index, 1, i[1]) self.list.SetStringItem(index, 2, i[2]) hbox.Add(self.list, 1, wx.EXPAND) panel.SetSizer(hbox) self.Centre() self.Show(True) app = wx.App() Actresses(None, -1, 'actresses') app.MainLoop()

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• How can I test to see if a class contains a particular attribute?

  - by BryanWheelock

  How can I test to see if a class contains a particular attribute? In [14]: user = User.objects.get(pk=2) In [18]: user.__dict__ Out[18]: {'date_joined': datetime.datetime(2010, 3, 17, 15, 20, 45), 'email': u'[email protected]', 'first_name': u'', 'id': 2L, 'is_active': 1, 'is_staff': 0, 'is_superuser': 0, 'last_login': datetime.datetime(2010, 3, 17, 16, 15, 35), 'last_name': u'', 'password': u'sha1$44a2055f5', 'username': u'DickCheney'} In [25]: hasattr(user, 'username') Out[25]: True In [26]: hasattr(User, 'username') Out[26]: False I'm having a weird bug where more attributes are showing up than I actually define. I want to conditionally stop this. e.g. if not hasattr(User, 'karma'): User.add_to_class('karma', models.PositiveIntegerField(default=1))

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• How do I write a custom validator for a zend form element with customized error messages?

  - by Mallika Iyer

  I have a question field with a list of allowed characters : A-Z,0-9,colon (:), question mark (?), comma(,), hyphen(-), apostrophe ('). I have the regex which works fine, in the fashion : $question->addValidator('regex', true, array(<regular expresstion>)) The default error message is something like ''' does not match against pattern '' I want to write a custom error message that says ' is not allowed in this field' Is there a simple way to do it using the existing zend components that I'm missing? Is writing a custom validator the only way to achieve what I'm trying to achieve? If yes, how do I write a custom validator (I looked at the documentation and didn't quite understand how I can customize the error messages) If there is any other way, I'd most appreciate that input too. Thanks for taking the time to answer this!

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• ruby rails loop causes server freeze

  - by Darkerstar

  Hi all: I am working on a Ruby on Rails project on Windows. I have Ruby 1.86 and Rails 2.35 installed. Everything is fine until I tried to implement a comet process. I have the following code written to respond to a long poll javascript request. But everytime this function is called, it will hang the whole rails server, no second request can get in, until the timeout. (I know there is juggernaut, but I like to implement one myself first :) Is this due to my server setup? The project will be deployed on a linux server with Ngix and Passenger setup, will it suffer the same problem? def comet_hook timeout(5) do while true do key = 'station_' + station_id.to_s + '_message_lastwrite' if Rails.cache.exist?(key) @cache_time = DateTime.parse(Rails.cache.read(key)) if @cache_time > hook_start @messages = @station.messages_posted_after(hook_start) hook_start = @cache_time break end end end ... end Also with Rails memory store cache, I keep getting "cannot modify frozen object" error, so the above script only worked for me when I switched to File cache. :(

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• NULL handling with subselect in Hibernate Criteria API

  - by Jens Schauder

  I'm constructing a Hibernate Criterion, using a subselect as follows DetachedCriteria subselect = DetachedCriteria.forClass(NhmCode.class, "sub"); // the subselect selecting the maximum 'validFrom' subselect.add(Restrictions.le("validFrom", new Date())); // it should be in the past (null needs handling here) subselect.add(Property.forName("sub.lifeCycle").eqProperty("this.id")); // join to owning entity subselect.setProjection(Projections.max("validFrom")); // we are only interested in the maximum validFrom Conjunction resultCriterion = Restrictions.conjunction(); resultCriterion.add(Restrictions.ilike(property, value)); // I have other Restrictions as well resultCriterion.add(Property.forName("validFrom").eq(subselect)); // this fails when validFrom and the subselect return NULL return resultCriterion; It works ok so far, but the restriction on the last line before the return statement is false when validFrom and subselect result in NULL. What I need is a version which handles this case as true. Possibly by applying a NVL or coalesce or similar. How do I do this?

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• why does python.subprocess hang after proc.communicate()?

  - by ccfenix

  I've got an interactive program called my_own_exe. First, it prints out alive, then you input S\n and then it prints out alive again. Finally you input L\n. It does some processing and exits. However, when I call it from the following python script, the program seemed to hang after printing out the first 'alive'. Can anyone here tell me why this is happening? Thanks proc2 = subprocess.Popen("my_own_exe", shell=True , stdin=subprocess.PIPE, stdout=subprocess.PIPE) print proc2.communicate()[0] time.sleep(2); print "alive" # 'hang' after print this line proc2.communicate('S\n')[0] print "alive" print proc2.communicate()[0] time.sleep(6)

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• Visual Python - Visualize graphs relating to a movement

  - by Francisco P.

  Hello, everyone! I'm working with visual python on a project where I need to simulate a physical movement. I'd like to present, in a different window than the one the actual, 3D sim is running, two graphs, both related to the movement: How the velocity and angular velocity progress over time. How the movement and rotation progress over time. All these vars are refreshed once per cycle (inside a while(true)) How can I accomplish this? Thank you for your time!

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• How can I determine in silverlight code where the silverlight instance is running?

  - by Edward Tanguay

  I have a silverlight app. When I develop I have it pick up its data from a local URL: http://localhost/theapp/data/... however, when it is online, I want it to pick up its data from an online URL: http://www.tanguay.info/... Currently I have a variable which I switch before I compile and upload: bool silverlightAppIsLive = true; which I use to determine whether or not to get data from the first or second URL above. Is there a way for me to determine this automatically in code without setting the variable manually?

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• The Bizarre Hidden Powers of the Preprocessor? [closed]

  - by ApprenticeHacker

  The preprocessor in C and C++ deserves an entire essay on its own to explore its rich possibilities for obfuscation. It is true that the C++ (and C) preprocessor can be used for a lot of powerful stuff. #ifdefs and #defines are often used to determine platforms, compilers and backends. Manipulating the code likewise. However, can anyone list some of the most powerful and bizarre things you can do with the preprocessor? The most sinister use of the preprocessor I've found is this: #ifndef DONE #ifdef TWICE // put stuff here to declare 3rd time around void g(char* str); #define DONE #else // TWICE #ifdef ONCE // put stuff here to declare 2nd time around void g(void* str); #define TWICE #else // ONCE // put stuff here to declare 1st time around void g(std::string str); #define ONCE #endif // ONCE #endif // TWICE #endif // DONE This declares different things based on how many times the header is included. Are there any other bizarre unknown powers of the C++ preprocessor?

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• C# WMI Eventwatcher code stopped working on Windows 7 with security exception

  - by Flores

  This is code that worked fine on Windows XP for years. User is not local administrator. WqlEventQuery query = new WqlEventQuery("SELECT * FROM Win32_ProcessStopTrace"); ConnectionOptions co = new ConnectionOptions(); co.EnablePrivileges = true; ManagementEventWatcher watcher = new ManagementEventWatcher(new ManagementScope(@"root\cimv2",co), query); watcher.EventArrived += StopEventArrived; watcher.Start(); This throws an SecurityException on Windows 7, Access Denied when running as a non admin. On XP this works fine without being admin. On this link MS states that 'Windows 7: Low-integrity users have read-only permissions for local WMI operations.'. I guess this is the problem. But I can't find any clue on how to change this.

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• PHP File Exists Always False

  - by Joe

  I have a case where file_exists() is always returning false. My latest attempt was to just test to see if it would return true for $_SERVER["SCRIPT_FILENAME"] and then return the value of the path if it couldn't find the file which it does. The path while not necessarily relevant to solving the problem is: /Users/joe/Workspace/720/app/webroot/index.php I have obviously verified that the file is there, and am not even sure how it couldn't be there since php is serving it up. I should mention this is on an install of OS X Snow Leopard running PHP 5.3.0. Any ideas would be fantastic. CODE SAMPLE: if (!file_exists($_SERVER["SCRIPT_FILENAME"])) $errors[] = 'Cant find:'. $_SERVER["SCRIPT_FILENAME"];

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• Actionscript 3 introspection -- function names

  - by Markus O'reilly

  I am trying to iterate through each of the members of an object. For each member, I check to see if it is a function or not. If it is a function, I want to get the name of it and perform some logic based on the name of the function. I don't know if this is even possible though. Is it? Any tips? example: var mems: Object = getMemberNames(obj, true); for each(mem: Object in members) { if(!(mem is Function)) continue; var func: Function = Function(mem); //I want something like this: if(func.getName().startsWith("xxxx")) { func.call(...); } } I'm having a hard time finding much on doing this. Thanks for the help.

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• Interface design pattern / Java / Seam

  - by Walter White

  Hi all, Is this possible somehow? @Name("geolocationService") public interface GeolocationService { @Query("SELECT g FROM Geolocation geolocation INNER JOIN geolocation.deployment deployment WHERE geolocation.ipStart <= INET_ATON(:ipAddress) AND deployment.active = TRUE") Geolocation findByIpAddress(@NamedParameter("ipAddress")final String ipAddress); } public GeolocationAction { @In private GeolocationService geolocationService; @RequestParameter("ipAddress") private String ipAddress; @Out private Geolocation geolocation; public void find() { geolocation = geolocationService.findByIpAddress(ipAddress); } } Is it possible to do this without implementing the interface? What is required to make that work? I want to maintain less and do more. If I can intercept invocations of the geolocationService then I am golden, how would I do that? I don't want it to ever be instantiated, so it will always be null (I don't want the @Name and @In annotations either then). Walter

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• jqGrid - how to change title based on colModel sortable property

  - by Greg

  When the mouse hovers over each column I'd like the tooltip to indicate whether that column is sortable. I am able to change the title attribute with something like this: $("#List .ui-th-column").each(function(i) { var isSortable = i % 2; $(this).attr('title', isSortable ? "Not Sortable" : "Click header to sort."); }); I'd like to replace the demo expression 'i % 2' with a check of the colMode's sortable property, but I can't figure out how to get the value of the colModel's sortable property. colModel: [ { name: 'Name', index: 'Name', width: 100, sortable: true }, { name: 'Note', index: 'Note', width: 200, sortable: false } ] I've tried .getGridParam and .getColProp but I don't think the syntax I'm using is correct.

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• a more pythonic way to express conditionally bounded loop?

  - by msw

  I've got a loop that wants to execute to exhaustion or until some user specified limit is reached. I've got a construct that looks bad yet I can't seem to find a more elegant way to express it; is there one? def ello_bruce(limit=None): for i in xrange(10**5): if predicate(i): if not limit is None: limit -= 1 if limit <= 0: break def predicate(i): # lengthy computation return True Holy nesting! There has to be a better way. For purposes of a working example, xrange is used where I normally have an iterator of finite but unknown length (and predicate sometimes returns False).

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• Reading SAML Attributes from SAML Token

  - by Shani

  I am loading SAML Token from XML file. string certificatePath = @"D:\Projects\SAMLDemo\Server.pfx"; X509Certificate2 cert = new X509Certificate2(certificatePath, "shani"); string samlFilePath = @"D:\Projects\SAMLDemo\saml.xml"; XmlReader reader = XmlReader.Create(samlFilePath); List<SecurityToken> tokens = new List<SecurityToken>(); tokens.Add(new X509SecurityToken(cert)); SecurityTokenResolver outOfBandTokenResolver = SecurityTokenResolver.CreateDefaultSecurityTokenResolver(new ReadOnlyCollection<SecurityToken>(tokens), true); SecurityToken securityToken = WSSecurityTokenSerializer.DefaultInstance.ReadToken(reader, outOfBandTokenResolver); SamlSecurityToken deserializedSaml = securityToken as SamlSecurityToken; How can I read the SAML attributes from deserializedSaml ? I need string values for the attributes.

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• easyui how to set a event on load tab error

  - by joaner

  I'm use easyui tabs load html content: contents.tabs('add',{ title: title, href: href, closable: true, extractor:function(data){ console.log(data); return data; } }); sometime I maybe got a 404, 500 response, but the response error message is not display in the new window. The tab window always show loading style. So I try to find a onLoadError event to catch this error in office manual: http://www.jeasyui.com/documentation/tabs.php , but not exists. Please tell me how to do let me exit the loading status.

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• Django IN query as a string result - invalid literal for int() with base 10

  - by bmelton

  Trying to query a 'Favorites' model to get a list of items a user has favorited, and then querying against a different model to get the objects back from that query to present to the template, but I'm getting an error: "invalid literal for int() with base 10" Looking over all of the other instances of that error, I couldn't find any in which the asker actually wanted to work with a comma separated list of integers, so I'm kind of at a loss. Model class Favorite(models.Model): # key should be the model name, id is the model.id, and user is the User object. key = models.CharField(max_length=255, unique=True) val = models.IntegerField(default=0) user = models.ForeignKey(User) class Admin: list_display = ('key', 'id', 'user') View def index(request): favorites = Favorite.objects.filter(key='blog', user=request.user.pk) values = "" for favorite in favorites: values += "%s," % favorite.val #values = "[%s]" % values blogs = Blog.objects.filter(pk__in=values) return render_to_response('favorite/index.html', { "favorites" : favorites, "blogs" : blogs, "values" : values, }, context_instance=RequestContext(request) ) enter code here

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