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• JQuery+Java setting field value with val() + single quote

  - by Fabio K

  I have a problem setting the value of a textarea element with jquery's val(). Basically, I have a JSP file which receives a string parameter called 'text'. Java code: String text = (String) request.getParameter('text'); Now I want my textarea element to receive this text: Javascript code: $('#textarea_id').val('<%=text%>'); It works when my text doesnt contain quotes single quotes (and possibly other chars). For example, for text = test' this error happens: Uncaught SyntaxError: Unexpected token ILLEGAL $('#textarea_id').val('test''); I hope you guys understand. I need a way to encode this value... i tried using escape so the quote is replaced by %27, but after unescaping its replaced again and the error happens. Thanks!

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• Wrong route generation using namespace

  - by Plume

  Hi people! I am building an administration space in my web application. To do this, I am using namespaces but even if the rake generated routes are ok, when i follow the root of my admin space I get an error: Routing Error No route matches "/guru" My routes.rb : Baies::Application.routes.draw do |map| resources :fights resources :actions resources :users namespace :guru do root :to => "guru#index" resources :users end root :to => "public#index" end My arbo: . `-- app `-- controllers |-- actions_controller.rb |-- application_controller.rb |-- fights_controller.rb |-- guru | |-- guru_controller.rb | `-- users_controller.rb |-- public_controller.rb `-- users_controller.rb For information, the routes /guru/users works :) Thanks for help! @tchaOo°

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• Update query in ado.net

  - by nikhil

  I wanted to update a column in my table, i have written the code it runs fine without any error also it displays the confirmation dialog box but the table is not updated whats wrong with the code. Dim sqlConn As New SqlClient.SqlConnection sqlConn.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\housingsociety.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True" Try sqlConn.Open() Catch sqlError As Exception MsgBox(sqlError.Message, 0, "Connection Error!") End Try Dim sqlComm As New SqlClient.SqlCommand sqlComm.Connection = sqlConn sqlComm.CommandText = "update committe_member set name = '@name' where name = 'member1'" Dim paramString As New SqlClient.SqlParameter("@name", SqlDbType.VarChar, 50) paramString.Direction = ParameterDirection.Input sqlComm.Parameters.Add(paramString) paramString.Value = TextBox1.Text sqlComm.ExecuteNonQuery() MsgBox("Record Sucessfully Altered", 0, "Confirmation!") sqlConn.Close()

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• Bug in variadic function template specialization with MSVC?

  - by Andrei Tita

  Using the Visual Studio Nov 2012 CTP, which supports variadic templates (among other things). The following code: template<int, typename... Args> void myfunc(Args... args) { } template<> void myfunc<1, float>(float) { } produces the following errors: error C2785: 'void myfunc(Args...)' and 'void myfunc(float)' have different return types error C2912: explicit specialization 'void myfunc(float)' is not a specialization of a function template (yeah, the first one is pretty funny) So my questions are: 1) Am I writing legal C++11 here? 2) If yes, is there a way to find out if this is a known bug in MSVC before submitting it?

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• C++ packing a typedef enum

  - by Sagar

  typedef enum BeNeLux { BELGIUM, NETHERLANDS, LUXEMBURG } _PACKAGE_ BeNeLux; When I try to compile this with C++ Compiler, I am getting errors, but it seems to work fine with a C compiler. So here's the question. Is it possible to pack an enum in C++, or can someone see why I would get the error? The error is: "semicolon missing after declaration of BeNeLux". I know, after checking and rechecking, that there definitely is a semicolon there, and in any places required in the rest of the code.

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• Unresolved External Symbol

  - by TomO

  I am working on wrapping a large number of .h and .lib files from native C++ to Managed C++ for eventual use as a referenced .dll in C#. I have the .lib files linked in and everything has been going smoothly so far. Upon wrapping the latest .h file, I hit a snag when 2 functions came back with the link error: error LNK2019: unresolved external symbol __imp__htonl@4 referenced in function "public: void __thiscall Field::setCharacter(unsigned char,int)" (?setCharacter@Field@@QAEXEH@Z) myutils.lib I have referenced "myutils.lib" in the linker options, so that shouldn't be the issue. What's strange is that I have about 20 functions in this particular .h file and all of the rest are linking just fine except for 3 functions. Any ideas?

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• Can you use #defined values in if statements (In C programs)?

  - by Jordan S

  I am new at C programming. I thought when you type something like #define Const 5000 that the compiler just replaces every instance of Const with 5000 at compile time. Is that wrong? I try doing this in my code and I get a syntax error. Why can't i do this? #define STEPS_PER_REV 12345 ... in some function if(CurrentPosition >= STEPS_PER_REV) { // do some stuff here } The compiler complains about the if statement with a syntax error that gives me no details.

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• In ASP.NET MVC, how does response.redirect work?

  - by Swoop

  I have used response.redirect in classic ASP and ASP.NET webforms. However, with MVC 2.0, I am running into something peculiar. I have a private method in a controller class that is used by multiple controller methods to help load and validate some information. This private method is setup to redirect if a problem is discovered to a generic error message page. The big problem I am noticing is that the calling controller class and page view attempt to complete rendering and loading before the redirect actually takes place. This is annoying in development because the View throws exceptions that I need to ignore before my generic error page finally loads. As mentioned above, I am used to the older model of response.redirect which prevented subsequent code on a page from being executed as the new page would then load. Any help or advice on redirects in MVC would be greatly appreciated.

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• XCode debugging. How can I see where my code fails ? I get no stacktrace...

  - by P5ycH0

  Currently I am struggling to find out where my code fails. Xcode sometimes gives me a stacktrace, but currently is doesn't. I just get an error msg in my console like: *** -[CFString copyWithZone:]: message sent to deallocated instance 0xbe10d80. But sometimes I don't get an error message in my console at all when my app crashes. How can I figure out where the problem acually occurs? How do you guys locate your problems? How do I get XCode to give me stacktraces?

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• Tell Xcode to ignore a header for some targets?

  - by William Jockusch

  I have an Xcode project with a mac target and an iOS target. The project contains a class IPhoneOnlyClass which is used in the iOS target only. I have unchecked IPhoneOnlyClass.m from the mac target so it doesn't compile that file. Now IphoneOnlyClass.h contains the line #import <GameKit/GameKit.h> When I am compiling for the mac target, Xcode gives me an error: error: GameKit/GameKit.h: No such file or directory I could get around this with a #ifdef, but is there a better way? I'd rather tell Xcode to ignore the header altogether when compiling the mac target.

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• Implementing traceback on i386

  - by markelliott2000

  Hi, I am currently porting our code from an alpha (Tru64) to an i386 processor (Linux) in C. Everything has gone pretty smoothly up until I looked into porting our exception handling routine. Currently we have a parent process which spawns lots of sub processes, and when one of these sub-processes fatal's (unfielded) I have routines to catch the process. I am currently struggling to find the best method of implementing a traceback routine which can list the function addresses in the error log, currently my routine just prints the the signal which caused the exception and the exception qualifier code. Any help would be greatly received, ideally I would write error handling for all processors, however at this stage I only really care about i386, and x86_64. Thanks Mark

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• wget: retrieving files recursively

  - by Shadow

  When using wget with the recursive option turned on I am getting an error message when it is trying to download a file. It thinks the link is a downloadable file when in reality it should just be following it to get to the page that actually contains the files that I want. wget -r -l 16 --accept=jpg website.com The error message is: .... since it should be rejected. This usually occurs when the website link it is trying to fetch ends with a sql statement. The problem however doesn't occur when using the very same wget command on that link. I want to know how exactly it is trying to fetch the pages. I guess I could always take a poke around the source although I don't know how messy the project is.

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• Paperclip not running tasks but not showing errors

  - by Trip

  This is strange. I just did a deploy to a cluster server, and since then, pictures have not been processing. Reading the logs, I usually do not get an error at all, but they never finish. However, on one particular image, I found this little bit at least, but this might not explain everything.. Any ideas? Processing PhotosController#edit (for 69.248.152.173 at 2010-05-27 04:25:12) [GET] Parameters: {"gallery_id"="2102", "action"="edit", "type"="photo", "id"="15453", "crop"="true", "controller"="photos", "organization_id"="470", "_"="1274959512393"} Rendering media/crop_photo ActionView::TemplateError (/data/HQ_Channel/releases/20100524111501/public/system/photos/15453/original/DSC05193.JPG is not recognized by the 'identify' command.) on line #4 of app/views/media/crop_photo.js.haml: 1: == $("#media_header").html('#{ escape_javascript(render :partial = 'media/crop_photo') }').slideDown("slow"); 2: 3: :plain 4: function updateForm(coords) 5: { 6: var rx = #{PHOTO_IMAGE_WIDTH} / coords.w; 7: var ry = #{PHOTO_IMAGE_HEIGHT} / coords.h; vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip/geometry.rb:24:in `from_file' app/models/photo.rb:68:in `photo_geometry' app/views/media/crop_photo.js.haml:4:in `_run_haml_app47views47media47crop_photo46js46haml' haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:13:in `render' app/controllers/photos_controller.rb:81:in `crop' app/controllers/photos_controller.rb:24:in `edit' haml (2.2.2) [v] rails/./lib/sass/plugin/rails.rb:19:in `process' lib/flash_session_cookie_middleware.rb:14:in `call' vendor/gems/hoptoad_notifier-2.2.2/lib/hoptoad_notifier/rack.rb:27:in `call' ** [Hoptoad] Failure: Net::HTTPClientError ** [Hoptoad] Environment Info: [Ruby: 1.8.6] [Rails: 2.3.3] [Env: production] ** [Hoptoad] Response from Hoptoad: No project exists with the given API key. Rendering /data/HQ_Channel/releases/20100524111501/public/500.html (500 Internal Server Error) And then a little later, I got this : ActionView::TemplateError (/data/HQ_Channel/releases/20100524111501/public/system/photos/15453/original/DSC05193.JPG is not recognized by the 'identify' command.) on line #4 of app/views/media/crop_photo.js.haml: 1: == $("#media_header").html('#{ escape_javascript(render :partial = 'media/crop_photo') }').slideDown("slow"); 2: 3: :plain 4: function updateForm(coords) 5: { 6: var rx = #{PHOTO_IMAGE_WIDTH} / coords.w; 7: var ry = #{PHOTO_IMAGE_HEIGHT} / coords.h; vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip/geometry.rb:24:in `from_file' app/models/photo.rb:68:in `photo_geometry' app/views/media/crop_photo.js.haml:4:in `_run_haml_app47views47media47crop_photo46js46haml' haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:13:in `render' app/controllers/photos_controller.rb:81:in `crop' app/controllers/photos_controller.rb:24:in `edit' haml (2.2.2) [v] rails/./lib/sass/plugin/rails.rb:19:in `process' lib/flash_session_cookie_middleware.rb:14:in `call' vendor/gems/hoptoad_notifier-2.2.2/lib/hoptoad_notifier/rack.rb:27:in `call' ** [Hoptoad] Failure: Net::HTTPClientError ** [Hoptoad] Environment Info: [Ruby: 1.8.6] [Rails: 2.3.3] [Env: production] ** [Hoptoad] Response from Hoptoad: No project exists with the given API key. Rendering /data/HQ_Channel/releases/20100524111501/public/500.html (500 Internal Server Error)

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• sql server 2008 express. cannot create mdf databse.

  - by yair

  Hi, I'm working with visual studio 2008 express and sql 2008 express. I'm trying to create mdf database (Add new Item ...)and I recieve the following error message: "a network-related or instance-specific error occured while establishing a connection to SQL Server. The server was not found or was not accessible. Verfy that instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named pipes Provider:40 - could not open connection to SQL)" Why ? Is it possible to create mdf database with SQL 2008 Express ? If it is then what to do ?

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• Status corresponding to Minimum value

  - by Lijo

  Hi Team, I am using SQL Server 2005. I have a table as given below. There can be multiple cancellations for each FundingID. I want to select the FundingCancellationReason corrersponding to minimum date for each funding. I wrote a query as follows. It is an SQL error 1) Could you please help me to avoid the SQL Error? 2) Is there any better logic to achieve the same? CREATE TABLE #FundingCancellation( [FundingCancellationID] INT IDENTITY(1,1) NOT NULL, [FundingID] INT , FundingCancellationDt SMALLDATETIME , FundingCancellationReason VARCHAR(50) ) SELECT FundingID, MIN(FundingCancellationDt), ( SELECT FundingCancellationReason FROM #FundingCancellation FC2 WHERE FC1.FundingID = FC2.FundingID AND FC2.FundingCancellationDt = MIN(FundingCancellationDt) ) [Reason Corresponding Minimum Date] FROM #FundingCancellation FC1 GROUP BY FundingID -- An aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference. I have seen the similar approach working in a somewhat complex query. So I believe tehre will be a way to correct my query Thanks Lijo

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• NoneType has no attribute Append

  - by Rosarch

  I'm new to Python. I can't understand why a variable is None at a certain point in my code: class UsersInRoom(webapp.RequestHandler): def get(self): room_id = self.request.get("room_id") username = self.request.get("username") UserInRoom_entities = UserInRoom.gql("WHERE room = :1", room_id).get() if UserInRoom_entities: for user_in_room in UserInRoom_entities: if user_in_room.username == username: user_in_room.put() # last_poll auto updates to now whenenever user_in_room is saved else: user_in_room = UserInRoom() user_in_room.username = username user_in_room.put() UserInRoom_entities = [] UserInRoom_entities.append(user_in_room) // error here # name is `user_at_room` intead of `user_in_room` to avoid confusion usernames = [user_at_room.username for user_at_room in UserInRoom_entities] self.response.out.write(json.dumps(usernames)) The error is: Traceback (most recent call last): File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 507, in __call__ handler.get(*groups) File "path\to\chat.py", line 160, in get AttributeError: 'NoneType' object has no attribute 'append' How is this possible? I'm setting UserInRoom_entities = [] immediately before that call. Or is something else the None in question?

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• c++: use a #define in printf?

  - by John

  I was wanting to use a constant of some kind for the application ID (so I can use it in printf). I had this: #define _APPID_ "Hello World!" And then the simple printf, calling it into %s (string). It put this out: simple.cpp:32: error: cannot convert ‘_IO_FILE*’ to ‘const char*’ for argument ‘1’ to ‘int printf(const char*, ...)’ What would I use to define the application ID to use in printf? I tried: static const char _APPID_[] = "Hello World"` but it didn't work, same error I think.

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• Unable to link to opengl libraries? DOS / MSVC

  - by Mark

  Is there something wrong with this link.exe command line? OpenGL32.lib and Glu32.lib are found at both of the LIBPATH directories. Is it possible the libraries are somehow incompatible? Is there a way to have the link.exe say that instead of unresolved external symbol? Googling shows that this error usually means the libraries are not found, but they are there. E:\mvs90\VC\BIN\link.exe /DLL /nologo /INCREMENTAL:no /DEBUG /pdb:None /LIBPATH:E:\code\python\python\py26\libs /LIBPATH:E:\code\python\python\py26\PCbuild opengl32.lib glu32.lib /EXPORT:init_rabbyt build\temp.win32-2.6-pydebug\Debug\rabbyt/rabbyt._rabbyt.obj /OUT:build\lib.win32-2.6-pydebug\rabbyt\_rabbyt_d.pyd /IMPLIB:build\temp.win32-2.6-pydebug\Debug\rabbyt\_rabbyt_d.lib /MANIFESTFILE:build\temp.win32-2.6-pydebug\Debug\rabbyt\_rabbyt_d.pyd.manifest Creating library build\temp.win32-2.6-pydebug\Debug\rabbyt\_rabbyt_d.lib and object build\temp.win32-2.6-pydebug\Debug\rabbyt\_rabbyt_d.exp rabbyt._rabbyt.obj : error LNK2019: unresolved external symbol __imp__glOrtho re ferenced in function ___pyx_f_6rabbyt_7_rabbyt_set_viewport Directory of E:\code\python\python\py26\libs 09/27/2007 02:20 PM 12,672 GlU32.Lib 09/27/2007 02:20 PM 76,924 OpenGL32.Lib

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• Accessing variablss through a different class within the constructor of latter classes of an object

  - by Haxed

  In the code below, I've added two lines that print output. The first line prints junk as usual, but surprisingly the second one gives me a compilation error. Why? class Student { private String name; public Student(String name){ this.name = name; } public String getName(){ return name; } } class StudentServer { public StudentServer(){ Student[] s = new Student[30]; s[0] = new Student("Nick"); // LINE 01: This compiles, although prints junk System.out.println(s[0]); // LINE 02: I get a error called cannot find symbol System.out.println(s[0].getName()); } public static void main(){ new StudentServer(); } } Many Thanks

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• Could not retrieve data from URL

  - by user1655065

  I have a lot of websites which are using the same CMS, and they are hosted in 3 seperated servers, only one of this servers has a problem with retrieving the title, description, and the image of any url, and in the FaceBook debugger I get this error: Could not retrieve data from URL. From previous questions, I read that the reason may be an HTML error, but as I said before on other servers there is no problem using the same CMS. You can try putting this URL for example in the debugger: http://www.shaharah.net/2010/news-10054.htm Also, other websites on the same server which are using another CMS, or is just HTML pages are also not retrieved. Thanks. Best regards, Aws Aleryani

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• Freeing memory with Pointer Arithmetic

  - by Breedly

  C++ newb here. I'm trying to write my own implementation of an array using only pointers, and I've hit a wall I don't know how to get over. My constructor throws this error array.cpp:40:35: error: invalid conversion from ‘int*’ to ‘int’ [-fpermissive] When my array initializes I want it to free up all the spaces in the array for ints. Array::Array(int theSize){ size = theSize; int *arrayPointer = new int; int index = 0; while(theSize > index){ *(arrayPointer + index) = new int; //This is the trouble line. ++index; } } What am I doing wrong stackoverflow?

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• Visual Studio output file permissions?

  - by uray

  I'am using Visual Studio 2010, how to set or automatically change owner of the output file from Visual Studio (such as executable file) to user other than administrator? all output files currently is owned by Administrator (due to Visual studio is launch by administrative privilege), so sometime I can't delete those files due to access permissions. sometime visual studio itself can't delete it too (after i ran the executable) until few minutes, its really annoying when I need to rebuild those executable. anyone know what's the actual problem here? error message is : error LNK1168: cannot open [path to file].exe for writing

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• Calling a WCF WebService in PHP via wsHttpBinding.

  - by Justin Dearing

  I have a WCF webservice I can connect to it via basicHttp, but not wsHttp. I try to conenct to it via wshttp via the following: $service = new SoapClient ("http://service.companyname.local:6666/Service/?wsdl", array( "location" => "http://service.companyname.local:6666/Service/WCF", "trace" => true, 'soap_version' => SOAP_1_2 ) ); The call to the SoapClient constructor returns fine. When I try to call one using $client-FunctionName, the page just sits there loading for quite a while, and eventually returns the error "Error Fetching http headers". What exactly is this supposed to mean and how do I fix it? (Consuming the service from .Net client works perfectly.)

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• problems with inserting data in database

  - by jannes braet

  $message=$_POST['answer']; $message=nl2br($message); $message=strip_tags($message, '<p><a><b><i><strong><em><code><sub><sup><img><ul><ol><li>'); $message = mysql_real_escape_string($message); $user=$_SESSION['SESS_MEMBER_ID']; $qry="INSERT INTO forum_rules (message,author,date) VALUES ($message,$user,'".date("Y-m-d H:i:s")."')"; $result=mysql_query($qry) or die(mysql_error()); if (!$result) { echo "error inserting data into database"; } else { ... } this codes always outputs error inserting data into database and i don't see what i'm doing wrong. i hav also tried to do it without the date part but that didn't work tho. can someone please tell me what i'm doing wrong here

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• Classic asp paging and session state

  - by flavour404

  Hi, Working on a classic asp page that uses paging. The error I am having a problem with is this: Lets say that you have 5 pages returned in your record set and you are on page 2. You leave and come back, you then press the link for page 3, the trouble is your session has timed out. I don't know why this happens but the page is reloaded, but the session check is bypassed and of course when the page attempts to retrieve the record set the session variables are now empty so I am getting a message stating: error near ',' line 1, because now the query is defunct. How do I get around this? Thanks, Ron.

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