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• What is the fragile base class problem?

  - by SunilRai86

  What is the fragile base class problem in java?

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• Help to solve "Robbery Problem"

  - by peiska

  Hello, Can anybody help me with this problem in C or Java? The problem is taken from here: http://acm.pku.edu.cn/JudgeOnline/problem?id=1104 Inspector Robstop is very angry. Last night, a bank has been robbed and the robber has not been caught. And this happened already for the third time this year, even though he did everything in his power to stop the robber: as quickly as possible, all roads leading out of the city were blocked, making it impossible for the robber to escape. Then, the inspector asked all the people in the city to watch out for the robber, but the only messages he got were of the form "We don't see him." But this time, he has had enough! Inspector Robstop decides to analyze how the robber could have escaped. To do that, he asks you to write a program which takes all the information the inspector could get about the robber in order to find out where the robber has been at which time. Coincidentally, the city in which the bank was robbed has a rectangular shape. The roads leaving the city are blocked for a certain period of time t, and during that time, several observations of the form "The robber isn't in the rectangle Ri at time ti" are reported. Assuming that the robber can move at most one unit per time step, your program must try to find the exact position of the robber at each time step. Input The input contains the description of several robberies. The first line of each description consists of three numbers W, H, t (1 <= W,H,t <= 100) where W is the width, H the height of the city and t is the time during which the city is locked. The next contains a single integer n (0 <= n <= 100), the number of messages the inspector received. The next n lines (one for each of the messages) consist of five integers ti, Li, Ti, Ri, Bi each. The integer ti is the time at which the observation has been made (1 <= ti <= t), and Li, Ti, Ri, Bi are the left, top, right and bottom respectively of the (rectangular) area which has been observed. (1 <= Li <= Ri <= W, 1 <= Ti <= Bi <= H; the point (1, 1) is the upper left hand corner, and (W, H) is the lower right hand corner of the city.) The messages mean that the robber was not in the given rectangle at time ti. The input is terminated by a test case starting with W = H = t = 0. This case should not be processed. Output For each robbery, first output the line "Robbery #k:", where k is the number of the robbery. Then, there are three possibilities: If it is impossible that the robber is still in the city considering the messages, output the line "The robber has escaped." In all other cases, assume that the robber really is in the city. Output one line of the form "Time step : The robber has been at x,y." for each time step, in which the exact location can be deduced. (x and y are the column resp. row of the robber in time step .) Output these lines ordered by time . If nothing can be deduced, output the line "Nothing known." and hope that the inspector will not get even more angry. Output a blank line after each processed case.

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• Problem with URL encoded parameters in URL view helper

  - by Richard Knop

  So my problem is kinda weird, it only occurs when I test the application offline (on my PC with WampServer), the same code works 100% correctly online. Here is how I use the helper (just example): <a href="<?php echo $this->url(array('module' => 'admin', 'controller' => 'index', 'action' => 'approve-photo', 'id' => $this->escape($a->id), 'ret' => urlencode('admin/index/photos')), null, true); ?>" class="blue">approve</a> Online, this link works great, it goes to the action which looks similar to this: public function approvePhotoAction() { $request = $this->getRequest(); $photos = $this->_getTable('Photos'); $dbTrans = false; try { $db = $this->_getDb(); $dbTrans = $db->beginTransaction(); $photos->edit($request->getParam('id'), array('status' => 'approved')); $db->commit(); } catch (Exception $e) { if (true === $dbTrans) { $db->rollBack(); } } $this->_redirect(urldecode($request->getParam('ret'))); } So online, it approves the photo and redirects back to the URL that is encoded as "ret" param in the URL ("admin/index/photos"). But offline with WampServer I click on the link and get 404 error like this: Not Found The requested URL /public/admin/index/approve-photo/id/1/ret/admin/index/photos was not found on this server. What the hell? I'm using the latest version of WampServer (WampServer 2.0i [11/07/09]). Everything else works. Here is my .htaccess file, just in case: RewriteEngine On RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [NC,L] RewriteRule ^.*$ /index.php [NC,L] # Turn off magic quotes #php_flag magic_quotes_gpc off I'm using virtual hosts to test ZF projects on my local PC. Here is how I add virtual hosts. httpd.conf: NameVirtualHost *:80 <VirtualHost *:80> ServerName myproject DocumentRoot "C:\wamp\www\myproject" </VirtualHost> the hosts file: 127.0.0.1 myproject Any help would be appreciated because this makes testing and debugging projects on my localhost a nightmare and almost impossible task. I have to upload everything online to check if it works :( UPDATE: Source code of the _redirect helper (built in ZF helper): /** * Set redirect in response object * * @return void */ protected function _redirect($url) { if ($this->getUseAbsoluteUri() && !preg_match('#^(https?|ftp)://#', $url)) { $host = (isset($_SERVER['HTTP_HOST'])?$_SERVER['HTTP_HOST']:''); $proto = (isset($_SERVER['HTTPS'])&&$_SERVER['HTTPS']!=="off") ? 'https' : 'http'; $port = (isset($_SERVER['SERVER_PORT'])?$_SERVER['SERVER_PORT']:80); $uri = $proto . '://' . $host; if ((('http' == $proto) && (80 != $port)) || (('https' == $proto) && (443 != $port))) { $uri .= ':' . $port; } $url = $uri . '/' . ltrim($url, '/'); } $this->_redirectUrl = $url; $this->getResponse()->setRedirect($url, $this->getCode()); } UPDATE 2: Output of the helper offline: /admin/index/approve-photo/id/1/ret/admin%252Findex%252Fphotos And online (the same): /admin/index/approve-photo/id/1/ret/admin%252Findex%252Fphotos UPDATE 3: OK. The problem was actually with the virtual host configuration. The document root was set to C:\wamp\www\myproject instead of C:\wamp\www\myproject\public. And I was using this htaccess to redirect to the public folder: RewriteEngine On php_value upload_max_filesize 15M php_value post_max_size 15M php_value max_execution_time 200 php_value max_input_time 200 # Exclude some directories from URI rewriting #RewriteRule ^(dir1|dir2|dir3) - [L] RewriteRule ^\.htaccess$ - [F] RewriteCond %{REQUEST_URI} ="" RewriteRule ^.*$ /public/index.php [NC,L] RewriteCond %{REQUEST_URI} !^/public/.*$ RewriteRule ^(.*)$ /public/$1 RewriteCond %{REQUEST_FILENAME} -f RewriteRule ^.*$ - [NC,L] RewriteRule ^public/.*$ /public/index.php [NC,L] Damn it I don't know why I forgot about this, I thought the virtual host was configured correctly to the public folder, I was 100% sure about that, I also double checked it and saw no problem (wtf? am I blind?).

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• Blackjack game reshuffling problem

  - by Jam

  I am trying to make a blackjack game where before each new round, the program checks to make sure that the deck has 7 cards per player. And if it doesn't, the deck clears, repopulates, and reshuffles. I have most of the problem down, but for some reason at the start of every deal it reshuffles the deck more than once, and I can't figure out why. Help, please. Here's what I have so far: (P.S. the imported cards and games modules aren't part of the problem, I'm fairly sure my problem lies in the deal() function of my BJ_Deck class.) import cards, games class BJ_Card(cards.Card): """ A Blackjack Card. """ ACE_VALUE = 1 def get_value(self): if self.is_face_up: value = BJ_Card.RANKS.index(self.rank) + 1 if value > 10: value = 10 else: value = None return value value = property(get_value) class BJ_Deck(cards.Deck): """ A Blackjack Deck. """ def populate(self): for suit in BJ_Card.SUITS: for rank in BJ_Card.RANKS: self.cards.append(BJ_Card(rank, suit)) def deal(self, hands, per_hand=1): for rounds in range(per_hand): for hand in hands: if len(self.cards)>=7*(len(hands)): top_card=self.cards[0] self.give(top_card, hand) else: print "Reshuffling the deck." self.cards=[] self.populate() self.shuffle() top_card=self.cards[0] self.give(top_card, hand) class BJ_Hand(cards.Hand): """ A Blackjack Hand. """ def init(self, name): super(BJ_Hand, self).init() self.name = name def __str__(self): rep = self.name + ":\t" + super(BJ_Hand, self).__str__() if self.total: rep += "(" + str(self.total) + ")" return rep def get_total(self): # if a card in the hand has value of None, then total is None for card in self.cards: if not card.value: return None # add up card values, treat each Ace as 1 total = 0 for card in self.cards: total += card.value # determine if hand contains an Ace contains_ace = False for card in self.cards: if card.value == BJ_Card.ACE_VALUE: contains_ace = True # if hand contains Ace and total is low enough, treat Ace as 11 if contains_ace and total <= 11: # add only 10 since we've already added 1 for the Ace total += 10 return total total = property(get_total) def is_busted(self): return self.total > 21 class BJ_Player(BJ_Hand): """ A Blackjack Player. """ def is_hitting(self): response = games.ask_yes_no("\n" + self.name + ", do you want a hit? (Y/N): ") return response == "y" def bust(self): print self.name, "busts." self.lose() def lose(self): print self.name, "loses." def win(self): print self.name, "wins." def push(self): print self.name, "pushes." class BJ_Dealer(BJ_Hand): """ A Blackjack Dealer. """ def is_hitting(self): return self.total < 17 def bust(self): print self.name, "busts." def flip_first_card(self): first_card = self.cards[0] first_card.flip() class BJ_Game(object): """ A Blackjack Game. """ def init(self, names): self.players = [] for name in names: player = BJ_Player(name) self.players.append(player) self.dealer = BJ_Dealer("Dealer") self.deck = BJ_Deck() self.deck.populate() self.deck.shuffle() def get_still_playing(self): remaining = [] for player in self.players: if not player.is_busted(): remaining.append(player) return remaining # list of players still playing (not busted) this round still_playing = property(get_still_playing) def __additional_cards(self, player): while not player.is_busted() and player.is_hitting(): self.deck.deal([player]) print player if player.is_busted(): player.bust() def play(self): # deal initial 2 cards to everyone self.deck.deal(self.players + [self.dealer], per_hand = 2) self.dealer.flip_first_card() # hide dealer's first card for player in self.players: print player print self.dealer # deal additional cards to players for player in self.players: self.__additional_cards(player) self.dealer.flip_first_card() # reveal dealer's first if not self.still_playing: # since all players have busted, just show the dealer's hand print self.dealer else: # deal additional cards to dealer print self.dealer self.__additional_cards(self.dealer) if self.dealer.is_busted(): # everyone still playing wins for player in self.still_playing: player.win() else: # compare each player still playing to dealer for player in self.still_playing: if player.total > self.dealer.total: player.win() elif player.total < self.dealer.total: player.lose() else: player.push() # remove everyone's cards for player in self.players: player.clear() self.dealer.clear() def main(): print "\t\tWelcome to Blackjack!\n" names = [] number = games.ask_number("How many players? (1 - 7): ", low = 1, high = 8) for i in range(number): name = raw_input("Enter player name: ") names.append(name) print game = BJ_Game(names) again = None while again != "n": game.play() again = games.ask_yes_no("\nDo you want to play again?: ") main() raw_input("\n\nPress the enter key to exit.")

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• problem with PHP class function ()

  - by lusey

  hello this is my first question here and i hope you can help me .. I am trying to find a soloution of the towers of hanoi problem by three search ways (BFS-DFS-IDS) so I use "state" class whitch defined by 5 variables as here : class state { var $tower1 = array(); var $tower2 = array(); var $tower3 = array(); var $depth; var $neighbors = array(); and it also has many function one of them is getneighbors() which supposed to fill the array $neighbors with state neighbors and they are from the type "state" and here is the function : function getneighbors () { $temp=$this->copy(); $neighbor1= $this->copy(); $neighbor2= $this->copy(); $neighbor3= $this->copy(); $neighbor4= $this->copy(); $neighbor5= $this->copy(); $neighbor6= $this->copy(); if(!Empty($temp->tower1)) { if(!Empty($neighbor1->tower2)) { if(end($neighbor1->tower1) < end($neighbor1->tower2)) { array_unshift($neighbor1->tower2,array_pop($neighbor1->tower1)); array_push($neighbors,$neighbor1); }} else { array_unshift($neighbor1->tower2, array_pop($neighbor1->tower1)); array_push($neighbors,$neighbor1); } if(!Empty($neighbor2->tower3)) { if(end($neighbor2->tower1) < end($neighbor2->tower3)) { array_unshift($neighbor2->tower3, array_pop($neighbor2->tower1)); array_push($neighbors,$neighbor2); }} else { array_unshift($neighbor2->tower3,array_shift($neighbor2->tower1)); array_push($neighbors,$neighbor2); } } if(!Empty($temp->tower2)) { if(!Empty($neighbor3->tower1)) { if(end($neighbor3->tower2) < end($neighbor3->tower1)) { array_unshift($neighbor3->tower1,array_shift($neighbor3->tower2)); array_push($neighbors,$neighbor3); } } else { array_unshift($neighbor3->tower1,array_shift($neighbor3->tower2)); array_push($neighbors,$neighbor3); } if(!Empty($neighbor4->tower3)) { if(end($neighbor4->tower2) < end($neighbor4->tower3)) { array_unshift($neighbor4->tower1,array_shift($neighbor4->tower2)); array_push($neighbors,$neighbor4); } } else{ array_unshift($neighbor4->tower3,array_shift($neighbor4->tower2)); array_push($neighbors,$neighbor4); } } if(!Empty($temp->tower3)) { if(!Empty($neighbor5->tower1)) { if(end($neighbor5->tower3) < end($neighbor5->tower1)) {array_unshift($neighbor5->tower1,array_shift($neighbor5->tower3)); array_push($neighbors,$neighbor5); } } else{ array_unshift($neighbor5->tower1,array_shift($neighbor5->tower3)); array_push($neighbors,$neighbor5);} if(!Empty($neighbor6->tower2)) { if(end($neighbor6->tower3) < end($neighbor6->tower2)) { array_unshift($neighbor6->tower2,array_shift($neighbor6->tower3)); array_push($neighbors,$neighbor6); }} else{ array_unshift($neighbor6->tower2,array_shift($neighbor6->tower3)); array_push($neighbors,$neighbor6);} } return $neighbors; } note that toString and equals and copy are defined too now the problem is that when I call getneighbors() it returns an empty $neighbors array can you pleas tell me the problem ?

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• "Parse Error : There is a problem parsing the package" while installing Android application

  - by Raghavendra

  I got this error while installing the android application (Parse Error : There is a problem parsing the package.). I did the following steps. First time I installed the application and it works fine. I made changes to the existing application and change the version no in Manifest file. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.openintents.samples.BasicOpenARDemo" android:versionCode="2" android:versionName="1.0.1"> Then I export the application and finish the code signing process. For this, Right Click your Project node select Export. There you will see a wizard. Follow the steps and finish the code signing also. I got the ARDemo.apk file, Then I changed it’s name to ARDemo1.apk Then I shipped this apk file to mobiles SD Card and started the installation I got the above error. I googled, they say that problem with unpacking manifest file. Can anyone tell me what could be wrong with me?

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• Socket.ReceiveAsync problem

  - by bartol

  Hi, I have a problem using SocketAsyncEventArgs model with .net sockets. Everything works great until the moment that the server wishes to close a client connection. I use following code for this: try { socket.Shutdown(SocketShutdown.Both); } catch { } // throws if client process has already closed finally { socket.Close(); } socket = null; Each connection is using two SocketAsyncEventArgs (one for send and one for receive) and after closing the connection they are returned to a pool from which they can be later reused. And here the problem starts, because when another connection is established and receive args are reused from the pool we get an exception: System.InvalidOperationException: "An asynchronous socket operation is already in progress using this SocketAsyncEventArgs instance."; at System.Net.Sockets.SocketAsyncEventArgs.StartOperationCommon(Socket socket) at System.Net.Sockets.Socket.ReceiveAsync(SocketAsyncEventArgs e) I've done some debugging and it appears that the connection closing code from the beginning of the question does not cancel Socket.ReceiveAsync operation that is in progress when the connection is closed. I've tried many combinations of Shutdown, Disconnect and Linger options for the socket but nothing worked. Any suggestions? Thanks

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• Problem with jqGrid in Internet Explorer 8

  - by Dave Swersky

  I have developed an ASP.NET MVC (version 2 RC) application with a ton of jqGrids. It's working like a champ in Firefox, but I've discovered a problem in IE8. The "Main View" grids can be filtered by a search box or one of a few dropdowns above the grid. I use some javascript to reset the url for the grid, then trigger a reload, thusly: function filterByName(filter) { if (filter == 'All') { $('#list').setGridParam({ url: 'Application/GetApplications' }); $('#list').trigger("reloadGrid"); } else { $('#list').setGridParam({ url: 'Application/GetAppByName/' + filter + '/' }); $('#list').trigger("reloadGrid"); } } This works like magic in Firefox, but I'm getting an HTTP 400 Bad Request when I do this in IE8. The IE8 client-side debugger is like flint and tinder compared to Firebug's flamethrower, so I'm not having much luck figuring out why it breaks in IE8. Has anyone seen this? Also, the jqGrid "trigger" method here is swallowing the AJAX exception. Is there a way to get it to bubble up so I can get to the exception details? UPDATE: The problem was with the syntax in my "onchange" event for the dropdowns. I was using: onchange="filterByMnemonic($('#drpMnemonic')[0].value); Which Firefox apparently doesn't mind but IE sees that as nuthin'. This, however, works in both browsers: onchange = "filterByMnemonic($('#drpMnemonic > option:selected').attr('value'));"

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• Problem printing google maps printing and using 'page-break-before' in IE8

  - by murdoch

  Hi, I'm having an annoying problem trying to get an html page with a google map on it to print correctly, I have a google map with an <h2> above it all wrapped in a div and the div is set to 'page-break-before:always;' in the css so that the map and its heading always sits on a new page. The problem is that in IE8 only i can always see a large portion of the map rendered on the previous page when printed, also the part of the map that is visible on the previous page is that which is outside the visible bounds of the map. HTML: <div id="description"> <h2>Description</h2> <p>Some paragraph of text</p> <p>Some paragraph of text</p> <p>Some paragraph of text</p> </div> <div id="map"> <h2>Location</h2> <div id="mapHolder"></div> <script type="text/javascript"> // ... javascript to create the google map </script> </div> CSS: #map { page-break-before:always; } Here is a screen grab of what it renders like in IE8 http://twitpic.com/1vtwrd It works fine in every other browser i have tried including IE7 so i'm a bit lost, has anyone any ideas of any tricks to stop this from happening?

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• Calling a MVC2 partial view using jquery returns empty string problem

  - by Jason

  I have an issue where I have a partial view that returns some HTML to be displayed. Its called when something is clicked on the page using jquery. The problem is that no matter how I call it, i get back an empty string even though it reports success. This is happening to me using Chrome, going against my local machine. My controller looks like this: public ActionResult MyPartialView() { return PartialView(model); } I have tried jquery using .get(), .post() and .load() and all have the same results. Here is an example using .post(): $.post(url, function (data) { alert(data); }); The result always comes back as an empty string. I can navigate to the partial view in the browser manually and i get back the desired HTML. The URL I am using to call it I resolved fully so it looks like "http://localhost/controller/mypartialview" rather than using the relative path of "/controller/mypartialview" which I thought was the original problem. Any idea what may cause this?

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• <rich:datatable> and <rich:datascroller> problem

  - by Bariscan

  Hi all, I am developing a Seam-Jsfv1.2-EJB3 web app. I have a datatable and checkboxes in each row. Moreover, I have a datascroller at the bottom of my table as well. My problem is when I click the next page number from the scroller, the selected checkboxes at the first page of the datatable is gone. I mean, even if they were selected, clicking the next page make them deselected. I see it by going back to the first page again by clicking the scroller. Do you have any idea about that problem? In order to clearify my case, I attached my code below: <rich:dataTable id="apiV2ProductList" rows="10" var="_apiV2Product" value="#{apiV2ProductList.resultList}" rendered="#{not empty apiV2ProductList.resultList}" reRender="ds"> <rich:column> <f:facet name="header"> <h:selectBooleanCheckbox id="selectionCheckAll" onclick="selectAll()" /> </f:facet> <h:selectBooleanCheckbox id="selectionCheck" onclick="increase(this)" value="#{_apiV2Product.selectValue}" > </h:selectBooleanCheckbox> </rich:column> ... <f:facet name="footer"> <rich:datascroller id="ds" renderIfSinglePage="false"> </rich:datascroller> </f:facet> Many thanks in advance. Baris

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• Pivotcache problem using ado recordset into excel

  - by bbenton

  I'm having a problem with runtime error 1004 at the last line. I'm bringing in an access query into excel 2007. I know the recordset is ok as I can see the fields and data. Im not sure about the picotcache was created in the set ptCache line. I see the application, but the index is 0. Code is below... Private Sub cmdPivotTables_Click() Dim rs As ADODB.Recordset Dim i As Integer Dim appExcel As Excel.Application Dim wkbTo As Excel.Workbook Dim wksTo As Excel.Worksheet Dim str As String Dim strSQL As String Dim rng As Excel.Range Dim rs As DAO.Recordset Dim db As DAO.Database Dim ptCache As Excel.PivotCache Set db = CurrentDb() 'to handle case where excel is not open On Error GoTo errhandler: Set appExcel = GetObject(, "Excel.Application") 'returns to default excel error handling On Error GoTo 0 appExcel.Visible = True str = FilePathReports & "Reports SCU\SCCUExcelReports.xlsx" 'tests if the workbook is open (using workbookopen functiion) If WorkbookIsOpen("SCCUExcelReports.xlsx", appExcel) Then Set wkbTo = appExcel.Workbooks("SCCUExcelReports.xlsx") wkbTo.Save 'To ensure correct Ratios&Charts is used wkbTo.Close End If Set wkbTo = GetObject(str) wkbTo.Application.Visible = True wkbTo.Parent.Windows("SCCUExcelReports.xlsx").Visible = True Set rs = New ADODB.Recordset strSQL = "SELECT viewBalanceSheetType.AccountTypeCode AS Type, viewBalanceSheetType.AccountGroupName AS AccountGroup, " _ & "viewBalanceSheetType.AccountSubGroupName As SubGroup, qryAmountIncludingAdjustment.BranchCode AS Branch, " _ & "viewBalanceSheetType.AccountNumber, viewBalanceSheetType.AccountName, " _ & "qryAmountIncludingAdjustment.Amount, qryAmountIncludingAdjustment.MonthEndDate " _ & "FROM viewBalanceSheetType INNER JOIN qryAmountIncludingAdjustment ON " _ & "viewBalanceSheetType.AccountID = qryAmountIncludingAdjustment.AccountID " _ & "WHERE (qryAmountIncludingAdjustment.MonthEndDate = GetCurrent()) " _ & "ORDER BY viewBalanceSheetType.AccountTypeSortOrder, viewBalanceSheetType.AccountGroupSortOrder, " _ & "viewBalanceSheetType.AccountNumber;" rs.Open strSQL, CurrentProject.Connection, adOpenDynamic, adLockOptimistic ' Set rs = db.OpenRecordset("qryExcelReportsTrialBalancePT", dbOpenForwardOnly) **'**********problem here Set ptCache = wkbTo.PivotCaches.Create(SourceType:=XlPivotTableSourceType.xlExternal) Set wkbTo.PivotCaches("ptCache").Recordset = rs**

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• Silverlight: Problem using CellEditingTemplate

  - by Charles

  Hello Silverlight gurus, I am experiencing a problem with the DataGrid where my data-bound object's properties are not being updated when using the CellTemplate/CellEditingTemplate: <data:DataGridTemplateColumn Header="Text"> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Text}" ></TextBlock> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> <data:DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <TextBox Text="{Binding Text, Mode=TwoWay}" /> </DataTemplate> </data:DataGridTemplateColumn.CellEditingTemplate> </data:DataGridTemplateColumn> I am binding to a code-gen'd entity via the RIA Services. I've added an event handler to the PropertyChanged event, and it is never fired. However, if I do not use a template and instead use a DataGridTextColumn, everything works fine. I'm sure this sounds like an easy fix - I'm only using a TextBox in my editing template, so why not us a DataGridTextColumn? The problem is that I want to have a multi-line textbox, so using the DataGridTextColumn is not an option. Any suggestions? Do you know of any differences between using a CellEditingTemplate containing a single TextBox and using a DataGridTextColumn? Thanks, -Charles [UPDATE] I posted a bug report here: http://silverlight.net/forums/p/118729/267521.aspx I can't imagine that this is "as-designed"... If someone else has known about this and I'm just being dumb, I'd appreciate an explanation - I'd prefer embarrassment over ignorance :).

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• Problem with Authlogic and Unit/Functional Tests in Rails

  - by mmacaulay

  I'm learning how unit testing is done in Rails, and I've run into a problem involving Authlogic. According to the Documentation there are a few things required to use Authlogic stuff in your tests: test_helper.rb: require "authlogic/test_case" class ActiveSupport::TestCase setup :activate_authlogic end Then in my functional tests I can login users: UserSession.create(users(:tester)) The problem seems to stem from the setup :activate_authlogic line in test_helper.rb, whenever that is included, I get the following errors when running functional tests: NoMethodError: undefined method `request=' for nil:NilClass authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:63:in `send' authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:63:in `method_missing' If I remove setup :activate_authlogic and add instead Authlogic::Session::Base.controller = Authlogic::ControllerAdapters::RailsAdapter.new(self) to test_helper.rb, my functional tests seem to work but now my unit tests fail: NoMethodError: undefined method `params' for ActiveSupport::TestCase:Class authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:30:in `params' authlogic (2.1.3) lib/authlogic/session/params.rb:96:in `params_credentials' authlogic (2.1.3) lib/authlogic/session/params.rb:72:in `params_enabled?' authlogic (2.1.3) lib/authlogic/session/params.rb:66:in `persist_by_params' authlogic (2.1.3) lib/authlogic/session/callbacks.rb:79:in `persist' authlogic (2.1.3) lib/authlogic/session/persistence.rb:55:in `persisting?' authlogic (2.1.3) lib/authlogic/session/persistence.rb:39:in `find' authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:96:in `get_session_information' authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:95:in `each' authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:95:in `get_session_information' /test/unit/user_test.rb:23:in `test_should_save_user_with_email_password_and_confirmation' What am I doing wrong?

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• jQuery slideToggle() Internet Explorer problem and jumpy animation

  - by UtothaX

  Hey yaa! I have a big problem with my jquery. I finally made it that my slidetoggle runs in firefox. The animation is a little bit jumpy in the end of the animation. I read a lot of workarounds, but somehow nothing helped me really. Perhaps anyone of you can rescue me out of this dilemma. The other bigger problem is that the hidden divs are unfortunately shown directly on start in internet explorer. I tested it in IE6&7. And the sliding effect is also very strange. Does anyone of you know if I have to give additional styling for IE??? Here is my site I am working on: http://www.haus-plan.de/%5F01%5FHausplan/ the red titles are slideable in the content area and the two Slide words on the right panel. I noticed that Internet Explorer runs the first Slide word on the right panel correctly. Here its div is first hidden and only shows up when we click and let it slide down. But for the other divs they are shown in the beginning which is very sh..... Please help meee....

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• Android NDK jni problem

  - by Donal Rafferty

  I have started teaching myself about the Android NDK and I have followed this example here - http://marakana.com/forums/android/android_examples/49.html I have followed the steps perfectly but when I run the application I get the following error: Trying to load lib /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 Added shared lib /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 No JNI_OnLoad found in /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 +++ not scanning '/system/lib/libwebcore.so' for 'hello' (wrong CL) +++ not scanning '/system/lib/libmedia_jni.so' for 'hello' (wrong CL) WARN/dalvikvm(5191): No implementation found for native Lcom/cnetworks/ndk/NativeLib;.hello ()Ljava/lang/String; Here is the java code, nativeLib.hello() is causing the problem. public class NDKdemo2 extends Activity { NativeLib nativeLib; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); nativeLib = new NativeLib(); String helloText = nativeLib.hello(); // Update the UI TextView outText = (TextView) findViewById(R.id.textOut); outText.setText(helloText); } } Has anyone had the same problem before and able to tell me whats wrong?

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• python mechanize.browser submit() related problem

  - by paul

  Hello All im making some script with mechanize.browser module. one of problem is all other thing is ok, but when submit() form,it not working, so i was found some suspicion source part. in the html source i was found such like following. <form method="post" onsubmit="return loginCheck(this)" name="FRMLOGIN"/> im thinking, loginCheck(this) making problem when submit form. but how to handle this kind of javascript function with mechanize module ,so i can successfully submit form and can receive result? folloing is my current script source. if anyone can help me ..much appreciate!! # -*- coding: cp949-*- import sys,os import mechanize, urllib import cookielib from BeautifulSoup import BeautifulSoup,BeautifulStoneSoup,Tag import datetime, time, socket import re,sys,os,mechanize,urllib,time br = mechanize.Browser() cj = cookielib.LWPCookieJar() br.set_cookiejar(cj) # Browser options br.set_handle_equiv(True) br.set_handle_gzip(True) br.set_handle_redirect(True) br.set_handle_referer(True) br.set_handle_robots(False) # Follows refresh 0 but not hangs on refresh > 0 br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1) # Want debugging messages? br.set_debug_http(True) br.set_debug_redirects(True) br.set_debug_responses(True) # User-Agent (this is cheating, ok?) br.addheaders = [('User-agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.6')] br.open('http://user.buddybuddy.co.kr/Login/LoginForm.asp?URL=') html = br.response().read() print html br.select_form(name='FRMLOGIN') print br.viewing_html() br.form['ID']='zero1zero2' br.form['PWD']='012045' br.submit() print br.response().read()

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• Mercurial hg Subrepository Problem - "abort: unknown revision'

  - by Tex

  Note: I asked this yesterday over at kiln.stackexchange.com, but haven't gotten an answer, and it's holding up my work. So I figured I'd give it a shot here. My main mercurial repository has a bunch of subrepositories in it. During initial setup, I made a mistake in my .hgsub. Namely, I pointed two subrepositories to the same directory. What I should have had: sites/1=sites/1 sites/2=sites/2 sites/3=sites/3 What I actually had: sites/1=sites/1 sites/2=sites/2 sites/2=sites/3 Stupid copy/paste error. I committed the incorrect .hgsub, not realizing my error. A few revisions later, while adding a some new subrespositories to .hgsub, I noticed the mistake and fixed it inside .hgsub. I committed and kept rolling along. I've committed a reasonable amount of work that I'd prefer not to redo since I 'fixed' the mistake in .hgsub. Now we come to the actual problem: I've made some changes inside the subrepository sites/3, and when I try to commit the main repository, I get the following error: abort: unknown revision 'LongGUIDLookingString' I found this discussion, which seems to address the same problem I'm having, but I can't quite work out how bos fixed it. What do I need to do in order to fix this?

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• Problem with conversion of existing project to Silverlight 4

  - by derklaus

  We have a working Silverlight 3 project. After changing the target framework to Silverlight 4 the application won't start anymore. It throws an exception in the following line in the generated InitializeComponent() method: System.Windows.Application.LoadComponent(this, new System.Uri("/SLAppMain;component/App.xaml", System.UriKind.Relative)); Here is the exception (note the inner exception): System.Windows.Markup.XamlParseException occurred Message= [Line: 0 Position: 0] LineNumber=0 LinePosition=0 StackTrace: bei System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) InnerException: System.TypeLoadException Message=Der Typ 'System.Security.AllowPartiallyTrustedCallersAttribute' konnte nicht aus der mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e -Assembly geladen werden. StackTrace: bei System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type) bei System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) bei System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments) bei System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean& ctorHasParameters, Boolean& isVarArg) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean isDecoratedTargetSecurityTransparent) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) bei System.Reflection.RuntimeAssembly.GetCustomAttributes(Type attributeType, Boolean inherit) bei System.Attribute.GetCustomAttributes(Assembly element, Type attributeType, Boolean inherit) bei MS.Internal.XamlSchemaContext.ProcessXmlnsDefinitions(Assembly assembly, String assemblyName) bei MS.Internal.XamlSchemaContext.EnsureManagedAssemblyAttributesLoaded() InnerException: The problem is that the type System.Security.AllowPartiallyTrustedCallersAttribute is not contained in the Silverlight version of mscorlib.dll. I have no idea how to fix this nor where to look for causes. Has anyone encountered this problem? What could possibly cause this error?

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• C#.NET Forms programing - Modal and Non-Modal forms problem

  - by Povilas

  Hello, I have a problem with modality of the forms under C#.NET. Let's say I have main form #0 (see the image below). This form represents main application form, where user can perform various operations. However, from time to time, there is a need to open additional non-modal form to perform additional main application functionality supporting tasks. Let's say this is form #1 in the image. On this #1 form there might be opened few additional modal forms on top of each other (#2 form in the image), and at the end, there is a progress dialog showing a long operation progress and status, which might take from few minutes up to few hours. The problem is that the main form #0 is not responsive until you close all modal forms (#2 in the image). I need that the main form #0 would be operational in this situation. However, if you open a non-modal form in form #2, you can operate with both modal #2 form and newly created non modal form. I need the same behavior between the main form #0 and form #1 with all its child forms. Is it possible? Or am I doing something wrong? Maybe there is some kind of workaround, I really would not like to change all ShowDialog calls to ShowDialog... Thanks, Povilas

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• C# winforms: A problem with sending an email cointaining the image background

  - by Tony

  Hi, I'm trying to figure out how to resolve the problem: I create the MailMessage object like that and send it: MailMessage mail = new MailMessage(); mail.From = new MailAddress("[email protected]"); mail.To.Add("[email protected]"); mail.Subject = "This is an email"; AlternateView plainView = AlternateView.CreateAlternateViewFromString("This is my plain text content, viewable by those clients that don't support html", null, MediaTypeNames.Text.Plain); (1) AlternateView htmlView = AlternateView.CreateAlternateViewFromString("Here is an embedded image.<img src=cid:companylogo>", null, "text/html"); LinkedResource logo = new LinkedResource("c:\\cop1.jpg"); logo.ContentId = "companylogo"; htmlView.LinkedResources.Add(logo); mail.AlternateViews.Add(plainView); mail.AlternateViews.Add(htmlView); Everything is OK, the mail has the image in the background. But the problem is, when I change in the paragraph (1) from (click) to (click) everything fails, the image is not recognized and is threated as a attachment ! I think that is caused by the first colon here background-image:cid:companylogo Is it possible to resolve that ?

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• XenServer 5.5 local storage problem

  - by Jason Nerer

  Hi community, I have the following problem with a Citrix XenServer 5.5. I had to physically move the host, so I shut down all machines via console: xe vm-shutdown force=true vm=my-machine-uuis-s After that I shut down the machine itself by issuing: halt After the reboot today the local storage repository is unplugged. I was trying to repair it via XenCenter, but I don't trust this one. So I tried: [root@xenserver ~]# xe pbd-list uuid ( RO) : ef6e2f3b-5825-393c-23e1-391d105c87ec host-uuid ( RO): c4bcf09c-2e52-448f-8210-df5d13bd33a9 sr-uuid ( RO): 2fb3be9c-075c-53ed-acb6-42f0c4ad0614 device-config (MRO): device: /dev/disk/by-id/scsi-SATA_WDC_WD5001ABYS-_WD-WCAS83698154,/dev/disk/by-id/scsi-SATA_WDC_WD5001ABYS-_WD-WCAS83694262 currently-attached ( RO): false To reattach the storage I issued: xe pbd-plug uuid=ef6e2f3b-5825-393c-23e1-391d105c87ec That one is running now for a while but not talking to me. The local repo has around 1TB. Should I wait, or are there any other options to reattach the local repo? What could have caused this problem? Any ideas? Thx. J

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• Speed Problem - Animating Height Change in UITableView

  - by Travis

  So I have a huge UITableView, between 1000 and 3000 rows. Each row needs to, when selected, expand to include several buttons. I do this by rendering the buttons below the cell, enabling clipping on the cells, and then just animating a change in height when they're selected. So I have heightForRowAtIndex checking if the row is selected, if so it gives a different height value. To do the animation, I have the following: - (void) tableView: (UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath { [self.tableView beginUpdates]; [self.tableView endUpdates]; } This all works wonderfully until I get around 1000 rows, at which point the animations still work and are still quite smooth, but they lag by a second or two. My first thought was a memory problem, but everything is being autoreleased and upon inspection my application isn't even receiving a memory warning message. So...any ideas on what this might be and how I can erase this lag between selection and change in cell height? Oh, and one last thing - right now I'm testing this on the iPad, so if this is a problem there, I expect it to be worse on our other target devices (iPhone and iPod).

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• IPhone SDK - Transition to NavigationController display problem

  - by Steblo

  Hi, I am nearly finished with my first IPhone app and everything works fine - except of one very little display bug: My starscreen is an UIView (Fullscreen) without Navigationbar or Toolbar. If I tap on a start button, there is an UIViewAnimationTransitionFlipFromRight animation that flips to the main navigation controller: -(IBAction) switchViewToMainMenu { [UIView beginAnimations:@"Flip View" context:nil]; [UIView setAnimationDuration:1.25]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:self.window cache:YES]; [self.navController viewWillAppear:YES]; [self.startScreenViewController viewWillDisappear:YES]; [self.startScreenViewController.view removeFromSuperview]; [self.window addSubview:navController.view]; [self.startScreenViewController viewDidDisappear:YES]; [self.navController viewDidAppear:YES]; [UIView commitAnimations]; self.startScreenViewController=nil; [startScreenViewController release]; } This works fine except of one little problem: When the navigation controller view appears (flips in), the Navigationbar on top is some pixels too high (the is a white bar where the Navigationbar should be). When the animation finished, the Navigationbar drops down to the right position. This doesn't look very beautiful... Any ideas how to fix that problem ?

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• Problem with creation of scheduled task from IIS6 on SR2003

  - by Morten Louw Nielsen

  Hi, I am writing a webapplication using .NET. The webapp creates scheduled tasks using the System.Diagnostics.Process class, calling SCHTASKS.EXE with parameters. I have changed the identity on the app pool, to a specific domain user. The domain-user is local administrator on all the four webservers. From webserver01 I am creating tasks on webserver01 to webserver04. It works perfect for 3-5 days, but then it breaks. It gives me the following errormessage in a messagebox: "The application failed to initialize properly (0xc0000142). Click on OK to terminate the application." If I have the system in the broken state, and I change the identity of the app pool to Domain administrator, it works. As I change it back to my domain-user, it breaks again. If I reboot the server, it works again for the same amount of days, but will break again. It seems like a permission-related problem. I just don't understand why it works sometimes, and sometimes doesn't. I hope someone outthere has seen this problem! Looking forward to hear from you! Kind regards, Morten, Denmark

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