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• Looking For a .NET Task Scheduling library

  - by Hounshell

  I'm looking for the following features: Scheduler uses SQL Server as the backing store Tasks can be scheduled by one application and executed by another I can have multiple applications, each of which handles a specific subset of tasks Tasks can be triggered at specific times, now, or based on the success or failure of other tasks Data can be attached to tasks There are a number of nice-to-have's, like a web management console, clustering/failover support, customizable logging, but they're not requirements. On the surface Quartz.NET has a nice interface and seems to fit the bill as it satisfies (1), (4 with some custom work) and (5), but I've been beating my head against (2) and (3) seems like I'd have to invest more effort than it's worth, especially given how convoluted the innards of it are. Any other libraries out there? Open source is preferred, with free as a close runner up. It's really hard to get management to pay for things like this when it's not their idea.

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• Using reflection to retrieve constructor used to instantiate attribute

  - by summatix

  How can I retrieve information about how an attribute was instantiated? Consider I have the following class definitions: [AttributeUsage(AttributeTargets.Class)] public class ExampleAttribute : Attribute { public ExampleAttribute(string value) { Value = value; } public string Value { get; private set; } } [ExampleAttribute("test")] public class Test { } The new .NET 4.0 MemberInfo.GetCustomAttributesData method: foreach (var attribute in typeof(Test).GetCustomAttributesData()) { Console.WriteLine(attribute); } outputs [Example.ExampleAttribute("test")]. Is there another way to retrieve this same information, preferably using the MemberInfo.GetCustomAttributes method?

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• setting jQuery .data() within .getJSON callback

  - by hackmaster.a

  I'm doing a couple of .getJSON calls and if any one of them succeeds, I'm trying to set a bool to true so I can then do some other stuff elsewhere on the page. I was trying to use jquery's .data() function, but I don't seem able to set it from inside the .getJSON callback. for example: $('#citations_button').data('citations', false); $.getJSON(apaurl, function(data) { $('#apacite').html("<td class=\"bibInfoLabel\">APA Citation</td><td class=\"bibInfoData\">"+data+"</td>"); $('#citations_button').data('citations', true); }, "html"); // other .getJSONs look like above... console.log("citations? "+$('#citations_button').data('citations')); prints false, even when I know the data came through. I thought this would work since .data() uses the cache to store the key/value pair. how can i flag successes?? appreciate any assistance!!

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• Issue passing NSMutableDictionary to a method

  - by roswell

  Hello all, I've got a chunk of code that's passing an NSMutableDictionary (amongst other things) to a method in another class: [self.shuttle makeAPICallAndReturnResultsUsingMode:@"login" module:@"login" query:credentials]; The NSMutableArray credentials is previously defined like this: NSMutableDictionary *credentials = [[NSMutableDictionary alloc] init]; [credentials setObject:username forKey:@"username"]; [credentials setObject:password forKey:@"password"]; The method that receives it looks like this: -(id)makeAPICallAndReturnResultsUsingMode:(NSString *)mode module:(NSString *)module query:(NSMutableDictionary *)query The code works fine up until this point within the above method: [query setObject:self.sessionID forKey:@"session_id"]; At this point, the application terminates -- the console informs me of this exception: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSCFDictionary setObject:forKey:]: method sent to an uninitialized mutable dictionary object' This leads me to believe that I must initialize NSMutableDictionary in some way in my new method before I can access it, but I have no idea how. Any advice?

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• Errno::EACCES: Permission denied - ./tmp/rspec_guard_result

  - by Evgeniy Gatsalov

  Trying settup rspec-guard-spork for learning app from http://ruby.railstutorial.org/ Using Ruby 2.0, Rails 4.0 on Windows7 ( I know :( ) When starting guard, get: 23:02:51 - ERROR - Guard::RSpec failed to achieve its <run_on_modifications>, exception was: > [#] Errno::EACCES: Permission denied - ./tmp/rspec_guard_result ... All gemfile, guardfile etc are edited according tutorial. Except 1) deleting win32console gem from gemfile because it turned console-out into a crap and raised an error. Permissions for a file is "F"(ull) for all cattegories: D:\WebDevelop\sample_appcacls tmp\rspec_guard_result D:\WebDevelop\sample_app\tmp\rspec_guard_result BUILTIN\Users:(ID)F NT AUTHORITY\Authenticated:(ID)F BUILTIN\Administrators:(ID)F NT AUTHORITY\system:(ID)F What additional info should I provide here?

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• iPhone - strange error when testing on simulator

  - by lostInTransit

  Hi I was testing my app on the simulator when it crashed on clicking a button of a UIAlertView. I stopped debugging there, made some changes to the code and built the app again. Now when I run the application, I get this error in the console Couldn't register com.myApp.debug with the bootstrap server. Error: unknown error code. This generally means that another instance of this process was already running or is hung in the debugger.Program received signal: “SIGABRT”. I tried removing the app from the simulator, doing a clean build but I still get this error when I try to run the app. Can someone please let me know what I should do to be able to run the app on my simulator again. Thanks.

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• What can't I build in Silverlight?

  - by Refracted Paladin

  First, I know that Silverlight needs to be embedded in a website, usually an asp page. I understand I need a delivery boy. My question is this; What types of apps/projects are so filled with technological hurdles as to make them ridiculous to do in Silverlight versus ASP.net? I know that with perseverance and flexibility I can probably make EVERY app in Silverlight, in some version or another, but which ones would be blatantly simple in, say ASP.net(or even WPF) but quite complicated in Silverlight? Basically what I am asking is if there is any reason I shouldn't consider Silverlight my first stop for every problem, obvious exceptions not with standing(a service or console). For me specifically, at this point, I am only building in house apps.

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• Help solving a error in openGL

  - by peiska

  Hi, I am making a group work in openGL, and when i try to open the file that my partner gave me i have this error: -------------- Build: Debug in CG --------------- Linking console executable: bin/Debug/CG ld: library not found for -lGL collect2: ld returned 1 exit status Process terminated with status 1 (0 minutes, 0 seconds) 0 errors, 0 warnings I've seen the same code working in his computer. Is it cause he is working in Windows? and i am working in MacOSX? I am using CodeBlocks IDE. Can anyone help me solving this?

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• C++ Winsock non-blocking/async UDP socket

  - by Ragnagard

  Hi all! I'm developping a little data processor in c++ over UDP sockets, and have a thread (just one, and apart the sockets) that process the info received from them. My problem happens when i need to receive info from multiple clients in the socket at the same time. How could i do something like: Socket foo; /* init socket vars and attribs */ while (serving){ thread_processing(foo_info); } for multiple clients (many concurrent access) in c++? I'm using winsocks atm on win32, but just get standard blocking udp sockets working. No gui, it's a console app. I'll appreciate so much an example or pointer to one ;). Thanks in advance.

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• RegisterClientScriptBlock code not executing.

  - by ProfK

  I'm using the following code in an attempt to show a dialog with a list of errors on the client: if (rollout.ImportErrors.Count > 0) { ClientScript.RegisterClientScriptBlock(GetType(), "showErrors", "showErrors();", true); } The error count is non-zero and the following script block is emitted, but the script isn't executing. <script type="text/javascript"> //<![CDATA[ $("#error-report").dialog("open")//]]> </script> If I call the function directly from a Firebug console window, the dialog shows properly, so I know the dialog and my code are working. What am I doing wrong? BTW, this code is in a content page, using a content placeholder that 'injects' code into the element of the rendered page.

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• Problem installing CTG 6.1 cicseci.rar ECI Resource Adapter in WAS 6.1

  - by Nick

  I have a problem with the CICS connection in my J2EE application. I am trying to install the cicseci.rar for the ECI Resource Adapter through the Admin console in WAS 6.1. The question is why am I receiving the following error while trying to install the cicseci.rar: Errors occurred during installation of the RAR file. Refer to the log files on node Node01 for more information. com.ibm.websphere.management.exception.ConfigServiceException: javax.management.MBeanException: Exception thrown in RequiredModelMBean while trying to invoke operation getResourceAdapterFromRAR Note: I have downloaded the cc03.zip containing fixes for file permissions related to the ECI Resource Adapters.

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• Zend Framework: Undefined class constant 'MYSQL_ATTR_INIT_COMMAND'

  - by Awan

  As you may have known that I switched from ubuntu to windows from my previous questions. I was working on Zend Framework on ubuntu and now working on same project in windows. Because of this switching I facing some problems in windows which was not occurred in ubuntu. Now I have the following error in firebug console when I go to login page: <b>Fatal error</b>: Undefined class constant 'MYSQL_ATTR_INIT_COMMAND' in <b>C:\wamp\www\vcred\library\Zend\Db\Adapter\Pdo\Mysql.php</b> on line <b>93</b><br /> Do you people know that what type of error is this and what is the solution? I have the following configuration for database. resources.db.adapter = "Pdo_Mysql" resources.db.params.host = "localhost" resources.db.params.username = "root" resources.db.params.password = "" resources.db.params.dbname = "test" resources.db.params.charset = "utf8" Thanks

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• Unable to get the Current User's Token information

  - by Ram

  Hi, I have been trying to get the currently logged-in user's token information using the following code : [DllImport("wtsapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern bool WTSQueryUserToken(int sessionId, out IntPtr tokenHandle); [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern uint WTSGetActiveConsoleSessionId(); static void Main(string[] args) { try { int sessionID = (int)WTSGetActiveConsoleSessionId(); if (sessionID != -1) { System.IntPtr currentToken = IntPtr.Zero; bool bRet = WTSQueryUserToken(sessionID, out currentToken); Console.WriteLine("bRet : " + bRet.ToString()); } } catch (Exception) { } } The problem is that, bRet is always false and currentToken is always 0. I am getting the sessionid as 1. Could someone tell me what's going wrong here? I want to use this token information to pass it to the CreateProcessAsUser function from a windows service. Thanks, Ram

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• Parametrized Strategy Pattern

  - by ott

  I have several Java classes which implement the strategy pattern. Each class has variable number parameters of different types: interface Strategy { public data execute(data); } class StrategyA implements Strategy { public data execute(data); } class StrategyB implements Strategy { public StrategyB(int paramA, int paramB); public data execute(data); } class StrategyB implements Strategy { public StrategyB(int paramA, String paramB, double paramC); public data execute(data); } Now I want that the user can enter the parameters in some kind of UI. The UI should be chosen at runtime, i.e. the strategies should be independent of it. The parameter dialog should not be monolithic and there should be the possibility to make it behave and look different for each strategy and UI (e.g. console or Swing). How would you solve this problem?

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• Eclipse/adb error message in Vista "Failed to parse the output of adb version"

  - by watchman317

  I am trying to learn Android development, so I downloaded Eclipse Galileo and the Android SDK. However, whenever I start Eclipse, I get the error message "Failed to parse the output of adb version." In the Console/DDMS pane, the debug output reads: [2010-06-07 20:15:13 - ddms]Failed to reopen debug port for Selected Client to: 8700 [2010-06-07 20:15:13 - ddms]Address family not supported by protocol family: bind java.net.SocketException: Address family not supported by protocol family: bind at sun.nio.ch.Net.bind(Native Method) at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source) at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source) at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source) at com.android.ddmlib.MonitorThread.reopenDebugSelectedPort(Unknown Source) at com.android.ddmlib.MonitorThread.run(Unknown Source) [2010-06-07 20:15:17 - adb]Failed to parse the output of 'adb version' I am running Eclipse Galileo, have the most recent Android SDK downloaded, and am running Windows Vista 32-bit SP2. I am sure that the Android SDK path is correct and that all the files are there. I would appreciate any assistance anyone could provide. P.S.--If anyone could direct me to any useful Android development resources, I would appreciate it

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• How to configure maximum number of channels in WCF?

  - by Hemant

  Consider following code which calls a calculator service: static void Main (string[] args) { for (int i = 0; i < 32; i++) { ThreadPool.QueueUserWorkItem (o => { var client = new CalcServiceClient (); client.Open (); while (true) { var sum = client.Add (2, 3); } }); } Console.ReadLine (); } If I use TCP binding then maximum 32 connections are opened but if I use HTTP binding, only 2 TCP connections are opened. How can I configure the maximum number of connections that can be opened using HTTP binding?

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• Mono mkbundle issue

  - by Sean

  Hello, I am trying to bundle mono runtime with a C# a simple (console) program that does nothing, but 'hello world'. Got Cygwin, configured it all, though it fails: $ mkbundle -o x2 x.exe --deps -z OS is: Windows Sources: 1 Auto-dependencies: True embedding: C:\cygwin\home\Sean\x.exe compression ratio: 31.71% embedding: C:\PROGRA~2\MONO-2~1.1\lib\mono\4.0\mscorlib.dll compression ratio: 34.68% Compiling: as -o temp.o temp.s gcc -mno-cygwin -g -o x2 -Wall temp.c `pkg-config --cflags --libs mono-2|dos2unix` -lz temp.o temp.c: In function `main': temp.c:173: warning: implicit declaration of function `g_utf16_to_utf8' temp.c:173: warning: assignment makes pointer from integer without a cast temp.c:188: warning: assignment makes pointer from integer without a cast /tmp/ccu8fTcQ.o: In function `main': /home/Sean/temp.c:173: undefined reference to `_g_utf16_to_utf8' /home/Sean/temp.c:188: undefined reference to `_g_utf16_to_utf8' collect2: ld returned 1 exit status [Fail] Tried post with similar problem to mine here, but it didn't work either. My configuration: Windows 7 64bit Mono 2.8.1 Latest Cygwin Not sure what's the story here. Help appreciated.

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• Undo "Upgrade Current Target for iPad?

  - by Moshe

  I've upgraded current Target for iPad and I dodn't like the result. Now, i've tried to downgrade by deleting files but it's not working. Help! Do I need to change project settings? Does XCode keep a backup of the project? What to do... It doesn't run on iPhone anymore... EDIT: The console crash log on the iPhone Simulator: 2010-05-10 00:11:02.455 iDecide[9743:207] Unknown class iDecideAppDelegate in Interface Builder file. 2010-05-10 00:11:02.456 iDecide[9743:207] Unknown class iDecideViewController in Interface Builder file. 2010-05-10 00:11:02.465 iDecide[9743:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UICustomObject 0x391eb80> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key viewController.' 2010-05-10 00:11:02.466 iDecide[9743:207] Stack: ( 34047067, 2420679945, 34206145, 215656, 214197, 4551796, 33949999, 4546347, 4554615, 2715730, 2754518, 2743092, 2725503, 2752609, 39038297, 33831808, 33827912, 2719253, 2756527 )

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• Trouble getting search results using MGTwitterEngine

  - by cannyboy

  I'm using a version of Matt Gemmell's MGTwitterEngine, and I'm trying to get some results from the getSearchResultsForQuery method. // do a search [_engine getSearchResultsForQuery:@"#quote"]; // delegate method for handling result - (void)searchResultsReceived:(NSArray *)searchResults forRequest:(NSString *)connectionIdentifier { if ([searchResults count] > 0) { NSDictionary *singleResult = [searchResults objectAtIndex:1]; NSString *text = [singleResult valueForKey:@"text"]; NSLog(@"Text at Index one: \n %@", text); } } However, I never appear to get the result. In the console, I get: Request 7E4C3097-88D6-45F1-90D2-AD8205FBAAC5 failed with error: Error Domain=HTTP Code=400 "Operation could not be completed. (HTTP error 400.)" Is there a way around this? Am I implementing the delegate method right? (Also, I had difficulty installing the YAJL stuff for the engine, and wonder if that has something to do with it)

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• Setup Padrino with DataMapper and MySQL database

  - by Ivo Sabev

  Hello I am trying to setup a Padrino project using DataMapper and MySQL on my Mac OSX Snow Leopard. I have the necessary gems: dm-core data_objects do_mysql mysql (linked to my original Mac OSX installation) But when I try to start the padrino with PADRINO START from the console, I get the following error: /Users/ivolution/.bundle/ruby/1.9.1/gems/dm-core-0.10.2/lib/dm-core/adapters/mysql_adapter.rb:3:in `require': no such file to load -- do_mysql (LoadError) But as I said I do have do_mysql gem installed so there shouldn't be such error, I did bundle install in my project folder before trying to start Padrino. Any ideas?

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• Code Golf: Triforce

  - by chpwn

  This is inspired by/taken from this thread: http://www.allegro.cc/forums/thread/603383 The Problem Assume the user gives you a numeric input ranging from 1 to 7. Input should be taken from the console, arguments are less desirable. When the input is 1, print the following: *********** ********* ******* ***** *** * Values greater than one should generate multiples of the pattern, ending with the one above, but stacked symmetrically. For example, 3 should print the following: *********** *********** *********** ********* ********* ********* ******* ******* ******* ***** ***** ***** *** *** *** * * * *********** *********** ********* ********* ******* ******* ***** ***** *** *** * * *********** ********* ******* ***** *** * Bonus points if you print the reverse as well. *********** *********** ********* ********* ******* ******* ***** ***** *** *** * * *********** ********* ******* ***** *** * * *** ***** ******* ********* *********** * * *** *** ***** ***** ******* ******* ********* ********* *********** *********** Can we try and keep it to one answer per language, that we all improve on?

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• $.getJson> $.each returns undefined

  - by Der Sep

  function getData(d){ Back = new Object(); $.getJSON('../do.php?', function(response){ if(response.type == 'success'){ Back = { "type" : "success", "content" : "" }; $.each(response.data, function(data){ Back.content +='<div class="article"><h5>'+data.title+'</h5>' Back.content +='<div class="article-content">'+data.content+'</div></div>'; }); } else{ Back = {"type" : "error" }; } return Back; }); } console.log(getData()); is returning undefined! why?

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• RadGrid cannot pass sortExpression to ObjectDataSourceControl

  - by Jeff

  I have a Telerik RadGrid that bound to a datasource object. They are configured to support custom paging, sorting. For paging, only the data of a page is retrieved from the database. Before sorting, it works fine. The select method of the datasource is like public List<xxx> Select(string sortExpression, int maximumRows, int startRowIndex) {} Before sorting the sortExpression is empty, which is expected. But after use click sort, in the OnSortCommand event handler of Radgrid, the SortExpression is correct, indicating RadGrid has caputre user's sorting correctly. protected void OnSort(object source, GridSortCommandEventArgs e) { Console.WriteLine(e.SortExpression); // correct } But what is strange is that the RadGrid does not pass parameter to DataSource correctly this time. sortExpression is still empty, maximumRows became int.Max, and startRowIndex is 0. The the sorting in still render correctly, but grid ask datasource to get all data and do the sorting locally. Is this bug of RadGrid or my configuration is wrong?

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• Rails migration to add boolean column to Postgres on Heroku

  - by pmc255

  I'm trying to execute a simple Rails migration to add a boolean column to an existing table. Here's the add_column call: add_column :users, :soliciting, :boolean, :null => false, :default => false However, after the migration runs (successfully, with no errors), I don't see the new column. If I go into the console and list the columns on the User table, for example, with this command: >> User.columns.each { |c| puts "#{c.name} : #{c.type}" } All the other columns show up, but not the one I just added with the migration. What's even more strange is that looking up a random user object yields the Postgres version of booleans (Ruby strings) >> User.find(1).soliciting => "t" However, the existing boolean columns all show up with standard Ruby boolean values of true and false. What's going on here? Is the migration actually complete? Why doesn't the column show up, yet is accessible in the model objects?

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• How to avoid OLEDB converting "."s into "#"s in column names?

  - by Andrew Miner

  I'm using the ACE OLEDB driver to read from an Excel 2007 spreadsheet, and I'm finding that any '.' character in column names get converted to a '#' character. For example, if I have the following in a spreadsheet: Name Amt. Due Due Date Andrew 12.50 4/1/2010 Brian 20.00 4/12/2010 Charlie 1000.00 6/30/2010 the name of the second column would be reported as "Amt# Due" when read with the following code: OleDbConnection connection = new OleDbConnection( "Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0}; " + "Extended Properties=\"Excel 12.0 Xml;HDR=YES;FMT=Delimited;IMEX=1\""); OldDbCommand command = new OleDbCommand("SELECT * FROM MyTable", connection); OleDbReader dataReader = command.ExecuteReader(); System.Console.WriteLine(dataReader.GetName(1)); I've read through all the documentation I can find and I haven't found anything which even mentions that this will happen. Has anyone run into this before? Is there a way to fix this behavior?

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