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• Configuration problems with django and mod_wsgi

  - by Jimbo

  Hi, I've got problems on getting django to work on apache 2.2 with mod_wsgi. Django is installed and mod_wsgi too. I can even see a 404 page when accessing the path and I can login to django admin. But if I want to install the tagging module I get the following error: Traceback (most recent call last): File "setup.py", line 49, in <module> version_tuple = __import__('tagging').VERSION File "/home/jim/django-tagging/tagging/__init__.py", line 3, in <module> from tagging.managers import ModelTaggedItemManager, TagDescriptor File "/home/jim/django-tagging/tagging/managers.py", line 5, in <module> from django.contrib.contenttypes.models import ContentType File "/usr/lib/python2.5/site-packages/django/contrib/contenttypes/models.py", line 1, in <module> from django.db import models File "/usr/lib/python2.5/site-packages/django/db/__init__.py", line 10, in <module> if not settings.DATABASE_ENGINE: File "/usr/lib/python2.5/site-packages/django/utils/functional.py", line 269, in __getattr__ self._setup() File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 40, in _setup self._wrapped = Settings(settings_module) File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 75, in __init__ raise ImportError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e) ImportError: Could not import settings 'mysite.settings' (Is it on sys.path? Does it have syntax errors?): No module named mysite.settings My httpd.conf: Alias /media/ /home/jim/django/mysite/media/ <Directory /home/jim/django/mysite/media> Order deny,allow Allow from all </Directory> Alias /admin/media/ "/usr/lib/python2.5/site-packages/django/contrib/admin/media/" <Directory "/usr/lib/python2.5/site-packages/django/contrib/admin/media/"> Order allow,deny Allow from all </Directory> WSGIScriptAlias /dj /home/jim/django/mysite/apache/django.wsgi <Directory /home/jim/django/mysite/apache> Order deny,allow Allow from all </Directory> My django.wsgi: import sys, os sys.path.append('/home/jim/django') sys.path.append('/home/jim/django/mysite') os.chdir('/home/jim/django/mysite') os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() I try to get this to work since a few days and have read several blogs and answers here on so but nothing worked.

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• How can I pass a reference to another control as an IValueConverter parameter?

  - by MKing

  I am binding some business objects to a WPF ItemsControl. They are displayed using a custom IValueConverter implementation used to produce the Geometry for a Path object in the DataTemplate as shown here: <ItemsControl x:Name="Display" Background="White" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ItemsSource="{Binding ElementName=ViewPlaneSelector, Path=SelectedItem.VisibleElements}" > <ItemsControl.Resources> <!-- This object is just used to get around the fact that ConverterParameter can't be a binding directly (it's not a DependencyProperty on a DependencyObject --> <this:GeometryConverterData x:Key="ConverterParameter2" Plane="{Binding ElementName=ViewPlaneSelector, Path=SelectedItem}" /> <DataTemplate DataType="{x:Type o:SlenderMember}"> <Path Stroke="Blue" StrokeThickness=".5" Data='{Binding Converter={StaticResource SlenderMemberConverter}, ConverterParameter={StaticResource ConverterParameter2}}' ToolTip="{Binding AsString}"> </Path> </DataTemplate> </ItemsControl.Resources> </ItemsControl> Note that the items for the ItemsControl are drawn from the ViewPlaneSelector (a ComboBox) SelectedItem.VisibleElements property. I need that same ViewPlaneSelector.SelectedItem in the SlenderMemberConverter to figure out how to display this element. I'm trying to get a reference to it into the converter by creating the intermediate GeometryConverterData object in the Resources section. This object exists solely to get around the problem of not being able to bind directly to the ConverterParameter property (as mentioned in the comments). Here is the code for the GeometryDataConverter class: class GeometryConverterData : FrameworkElement { public static readonly DependencyProperty PlaneProperty = DependencyProperty.Register("Plane", typeof(ViewPlane), typeof(GeometryConverterData), null, ValidValue); public static bool ValidValue(object o){ return true; } public ViewPlane Plane { get{ return GetValue(PlaneProperty) as ViewPlane; }set{ SetValue(PlaneProperty, value); } } } I added the ValidValue function for debugging, to see what this property was getting bound it. It only and always gets set to null. I know that the ViewPlaneSelector.SelectedItem isn't always null since the ItemsControl has items, and it's items are drawn from the same property on the same object... so what gives? How can I get a reference to this ComboBox into my ValueConverter. Or, alternately, why is what I'm doing silly and overly complicated. I'm as guilty as many of sometimes getting it into my head that something has to be done a certain way and then killing myself to make it happen when there's a much cleaner and simpler solution.

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• NSObjectController confusion binding to a class property. Help!

  - by scottw

  Hi, I'm teaching myself cocoa and enjoying the experience most of the time. I have been struggling all day with a simple problem that google has let me down on. I have read the Cocoa Bindings Program Topics and think I grok it but still can't solve my issue. I have a very simple class called MTSong that has various properties. I have used @synthesize to create getter/setters and can use KVC to change properties. i.e in my app controller the following works: mySong = [[MTSong alloc]init]; [mySong setValue:@"2" forKey:@"version"]; In case I am doing something noddy in my class code MTSong.h is: #import <Foundation/Foundation.h> @interface MTSong : NSObject { NSNumber *version; NSString *name; } @property(readwrite, assign) NSNumber *version; @property(readwrite, assign) NSString *name; @end and MTSong.m is: #import "MTSong.h" @implementation MTSong - (id)init { [super init]; return self; } - (void)dealloc { [super dealloc]; } @synthesize version; @synthesize name; @end In Interface Builder I have a label (NSTextField) that I want to update whenever I use KVC to change the version of the song. I do the following: Drag NSObjectController object into the doc window and in the Inspector-Attributes I set: Mode: Class Class Name: MTSong Add a key called version and another called name Go to Inspector-Bindings-Controller Content Bind To: File's Owner (Not sure this is right...) Model Key Path: version Select the cell of the label and go to Inspector Bind to: Object Controller Controller Key: mySong Model Key Path: version I have attempted changing the Model Key Path in step 2 to "mySong" which makes more sense but the compiler complains. Any suggestions would be greatly appreciated. Scott Update Post Comments I wasn't exposing mySong property so have changed my AppController.h to be: #import <Cocoa/Cocoa.h> @class MTSong; @interface AppController : NSObject { IBOutlet NSButton *start; IBOutlet NSTextField *tf; MTSong *mySong; } -(IBAction)convertFile:(id)sender; @end I suspect File's owner was wrong as I am not using a document based application and I need to bind to the AppController, so step 2 is now: Go to Inspector-Bindings-Controller Content Bind To: App Controller Model Key Path: mySong I needed to change 3. to Select the cell of the label and go to Inspector Bind to: Object Controller Controller Key: selection Model Key Path: version All compiles and is playing nice!

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• jQuery and XML (with CDATA)

  - by P..

  I've seen the post that deal with this issue but I still can't solve my issue: I've got XML with CDATA and when I parse the XML, it includes the CDATA (which I don't want). XML sample: <mainnav> <nav path="/" xmlpath="home.xml" key="footer" navigator=""> <display><![CDATA[Home]]></display> <title><![CDATA[Home]]></title> </nav> <nav path="/nav1/" xmlpath="nav1.xml" key="primary" navigator="primary" iconid="0"> <display><![CDATA[Nav 1]]></display> <title><![CDATA[Nav 1]]></title> <overdesc><![CDATA[test nav 1]]></overdesc> <sub path="/nav1/sub1/" xmlpath="nav1/sub1.xml" key="sub"> <display><![CDATA[sub 1<br />of nav 1]]></display> <title><![CDATA[sub 1<br />of nav 1]]></title> </sub> </nav> <nav path="/nav1/" xmlpath="nav2.xml" key="primary" navigator="primary" iconid="1"> <display><![CDATA[Nav 2]]></display> <title><![CDATA[Nav 2]]></title> <overdesc><![CDATA[test nav 2]]></overdesc> <sub path="/nav2/sub1/" xmlpath="nabv2/sub1.xml" key="sub"> <display><![CDATA[sub 1<br />of nav 2]]></display> <title><![CDATA[sub 1<br />of nav2]]></title> </sub> </nav> </mainnav> jQuery: $(document).ready(function(){ $.ajax({ type: "GET", url: "site_xml/config.xml", //contentType: "text/xml", dataType: ($.browser.msie) ? "xml" : "text/xml", success: parseXML, error: function(XMLHttpRequest, textStatus, errorThrown) { alert(errorThrown); } });}); function parseXML(xml) { $(xml).find('nav').each(function(){ if ($(this).attr("key")=="primary") { // this is a primary nav item; var title = $.trim( $(this).find('title').text() ); alert(title); $("#output").append(title); //nothing showing up in my output DIV, presumably due to the CDATA tags? } }); }

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• Scala n00b: Critique my code

  - by Peter

  G'day everyone, I'm a Scala n00b (but am experienced with other languages) and am learning the language as I find time - very much enjoying it so far! Usually when learning a new language the first thing I do is implement Conway's Game of Life, since it's just complex enough to give a good sense of the language, but small enough in scope to be able to whip up in a couple of hours (most of which is spent wrestling with syntax). Anyhoo, having gone through this exercise with Scala I was hoping the Scala gurus out there might take a look at the code I've ended up with and provide feedback on it. I'm after anything - algorithmic improvements (particularly concurrent solutions!), stylistic improvements, alternative APIs or language constructs, disgust at the length of my function names - whatever feedback you've got, I'm keen to hear it! You should be able to run the following script via "scala GameOfLife.scala" - by default it will run a 20x20 board with a single glider on it - please feel free to experiment. // CONWAY'S GAME OF LIFE (SCALA) abstract class GameOfLifeBoard(val aliveCells : Set[Tuple2[Int, Int]]) { // Executes a "time tick" - returns a new board containing the next generation def tick : GameOfLifeBoard // Is the board empty? def empty : Boolean = aliveCells.size == 0 // Is the given cell alive? protected def alive(cell : Tuple2[Int, Int]) : Boolean = aliveCells contains cell // Is the given cell dead? protected def dead(cell : Tuple2[Int, Int]) : Boolean = !alive(cell) } class InfiniteGameOfLifeBoard(aliveCells : Set[Tuple2[Int, Int]]) extends GameOfLifeBoard(aliveCells) { // Executes a "time tick" - returns a new board containing the next generation override def tick : GameOfLifeBoard = new InfiniteGameOfLifeBoard(nextGeneration) // The next generation of this board protected def nextGeneration : Set[Tuple2[Int, Int]] = aliveCells flatMap neighbours filter shouldCellLiveInNextGeneration // Should the given cell should live in the next generation? protected def shouldCellLiveInNextGeneration(cell : Tuple2[Int, Int]) : Boolean = (alive(cell) && (numberOfAliveNeighbours(cell) == 2 || numberOfAliveNeighbours(cell) == 3)) || (dead(cell) && numberOfAliveNeighbours(cell) == 3) // The number of alive neighbours for the given cell protected def numberOfAliveNeighbours(cell : Tuple2[Int, Int]) : Int = aliveNeighbours(cell) size // Returns the alive neighbours for the given cell protected def aliveNeighbours(cell : Tuple2[Int, Int]) : Set[Tuple2[Int, Int]] = aliveCells intersect neighbours(cell) // Returns all neighbours (whether dead or alive) for the given cell protected def neighbours(cell : Tuple2[Int, Int]) : Set[Tuple2[Int, Int]] = Set((cell._1-1, cell._2-1), (cell._1, cell._2-1), (cell._1+1, cell._2-1), (cell._1-1, cell._2), (cell._1+1, cell._2), (cell._1-1, cell._2+1), (cell._1, cell._2+1), (cell._1+1, cell._2+1)) // Information on where the currently live cells are protected def xVals = aliveCells map { cell => cell._1 } protected def xMin = (xVals reduceLeft (_ min _)) - 1 protected def xMax = (xVals reduceLeft (_ max _)) + 1 protected def xRange = xMin until xMax + 1 protected def yVals = aliveCells map { cell => cell._2 } protected def yMin = (yVals reduceLeft (_ min _)) - 1 protected def yMax = (yVals reduceLeft (_ max _)) + 1 protected def yRange = yMin until yMax + 1 // Returns a simple graphical representation of this board override def toString : String = { var result = "" for (y <- yRange) { for (x <- xRange) { if (alive (x,y)) result += "# " else result += ". " } result += "\n" } result } // Equality stuff override def equals(other : Any) : Boolean = { other match { case that : InfiniteGameOfLifeBoard => (that canEqual this) && that.aliveCells == this.aliveCells case _ => false } } def canEqual(other : Any) : Boolean = other.isInstanceOf[InfiniteGameOfLifeBoard] override def hashCode = aliveCells.hashCode } class FiniteGameOfLifeBoard(val boardWidth : Int, val boardHeight : Int, aliveCells : Set[Tuple2[Int, Int]]) extends InfiniteGameOfLifeBoard(aliveCells) { override def tick : GameOfLifeBoard = new FiniteGameOfLifeBoard(boardWidth, boardHeight, nextGeneration) // Determines the coordinates of all of the neighbours of the given cell override protected def neighbours(cell : Tuple2[Int, Int]) : Set[Tuple2[Int, Int]] = super.neighbours(cell) filter { cell => cell._1 >= 0 && cell._1 < boardWidth && cell._2 >= 0 && cell._2 < boardHeight } // Information on where the currently live cells are override protected def xRange = 0 until boardWidth override protected def yRange = 0 until boardHeight // Equality stuff override def equals(other : Any) : Boolean = { other match { case that : FiniteGameOfLifeBoard => (that canEqual this) && that.boardWidth == this.boardWidth && that.boardHeight == this.boardHeight && that.aliveCells == this.aliveCells case _ => false } } override def canEqual(other : Any) : Boolean = other.isInstanceOf[FiniteGameOfLifeBoard] override def hashCode : Int = { 41 * ( 41 * ( 41 + super.hashCode ) + boardHeight.hashCode ) + boardWidth.hashCode } } class GameOfLife(initialBoard: GameOfLifeBoard) { // Run the game of life until the board is empty or the exact same board is seen twice // Important note: this method does NOT necessarily terminate!! def go : Unit = { var currentBoard = initialBoard var previousBoards = List[GameOfLifeBoard]() while (!currentBoard.empty && !(previousBoards contains currentBoard)) { print(27.toChar + "[2J") // ANSI: clear screen print(27.toChar + "[;H") // ANSI: move cursor to top left corner of screen println(currentBoard.toString) Thread.sleep(75) // Warning: unbounded list concatenation can result in OutOfMemoryExceptions ####TODO: replace with LRU bounded list previousBoards = List(currentBoard) ::: previousBoards currentBoard = currentBoard tick } // Print the final board print(27.toChar + "[2J") // ANSI: clear screen print(27.toChar + "[;H") // ANSI: move cursor to top left corner of screen println(currentBoard.toString) } } // Script starts here val simple = Set((1,1)) val square = Set((4,4), (4,5), (5,4), (5,5)) val glider = Set((2,1), (3,2), (1,3), (2,3), (3,3)) val initialBoard = glider (new GameOfLife(new FiniteGameOfLifeBoard(20, 20, initialBoard))).go //(new GameOfLife(new InfiniteGameOfLifeBoard(initialBoard))).go // COPYRIGHT PETER MONKS 2010 Thanks! Peter

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• pthreads_setaffinity_np: Invalid argument?

  - by hahuang65

  I've managed to get my pthreads program sort of working. Basically I am trying to manually set the affinity of 4 threads such that thread 1 runs on CPU 1, thread 2 runs on CPU 2, thread 3 runs on CPU 3, and thread 4 runs on CPU 4. After compiling, my code works for a few threads but not others (seems like thread 1 never works) but running the same compiled program a couple of different times gives me different results. For example: hao@Gorax:~/Desktop$ ./a.out Thread 3 is running on CPU 3 pthread_setaffinity_np: Invalid argument Thread Thread 2 is running on CPU 2 hao@Gorax:~/Desktop$ ./a.out Thread 2 is running on CPU 2 pthread_setaffinity_np: Invalid argument pthread_setaffinity_np: Invalid argument Thread 3 is running on CPU 3 Thread 3 is running on CPU 3 hao@Gorax:~/Desktop$ ./a.out Thread 2 is running on CPU 2 pthread_setaffinity_np: Invalid argument Thread 4 is running on CPU 4 Thread 4 is running on CPU 4 hao@Gorax:~/Desktop$ ./a.out pthread_setaffinity_np: Invalid argument My question is "Why does this happen? Also, why does the message sometimes print twice?" Here is the code: #define _GNU_SOURCE #include <stdio.h> #include <pthread.h> #include <stdlib.h> #include <sched.h> #include <errno.h> #define handle_error_en(en, msg) \ do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0) void *thread_function(char *message) { int s, j, number; pthread_t thread; cpu_set_t cpuset; number = (int)message; thread = pthread_self(); CPU_SET(number, &cpuset); s = pthread_setaffinity_np(thread, sizeof(cpu_set_t), &cpuset); if (s != 0) { handle_error_en(s, "pthread_setaffinity_np"); } printf("Thread %d is running on CPU %d\n", number, sched_getcpu()); exit(EXIT_SUCCESS); } int main() { pthread_t thread1, thread2, thread3, thread4; int thread1Num = 1; int thread2Num = 2; int thread3Num = 3; int thread4Num = 4; int thread1Create, thread2Create, thread3Create, thread4Create, i, temp; thread1Create = pthread_create(&thread1, NULL, (void *)thread_function, (char *)thread1Num); thread2Create = pthread_create(&thread2, NULL, (void *)thread_function, (char *)thread2Num); thread3Create = pthread_create(&thread3, NULL, (void *)thread_function, (char *)thread3Num); thread4Create = pthread_create(&thread4, NULL, (void *)thread_function, (char *)thread4Num); pthread_join(thread1, NULL); pthread_join(thread2, NULL); pthread_join(thread3, NULL); pthread_join(thread4, NULL); return 0; }

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• Python, SWIG and other strange things

  - by wanderameise

  hey, I have a firmware for an USB module I can already control by visual C. Now I want to port this to python. for this I need the octopus library which is written in c. I found a file called octopus_wrap which was created by SWIG! then I found a makefile which says: python2.5: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.5 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so python2.4: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.4 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so win: gcc -fPIC -c ../../liboctopus/src/octopus.c -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -c octopus_wrap.c -I /c/Python25/libs -lpython25 -I/c/Python25/include -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -shared *.o -o _octopus.pyd -L/c/Python25/libs -lpython25 -lusb -L/c/Programme/libusb-win32-device-bin-0.1.10.1/lib/gcc clean: rm -f octopus* _octopus* install_python2.4: cp _octopus.so /usr/local/lib/python2.4/site-packages/ cp octopus.py /usr/local/lib/python2.4/site-packages/ install_python2.5: cp _octopus.so /usr/local/lib/python2.5/site-packages/ cp octopus.py /usr/local/lib/python2.5/site-packages/ I dont know how to handle this but as far as I can see octopus.py and _octopus.so are the resulting output files which are relevant to python right? luckily someone already did that and so I put those 2 files to my "python26/lib" folder (hope it doesnt matter if it´s python 2.5 or 2.6?!) So when working with the USB device the octopus.py is the library to work with! Importing this file makes several problems: >>> Traceback (most recent call last): File "C:\Users\ameise\My Dropbox\µC\AVR\OCTOPUS\octopususb-0.5\demos\python \blink_status.py", line 8, in <module> from octopus import * File "C:\Python26\lib\octopus.py", line 7, in <module> import _octopus ImportError: DLL load failed: module not found. and here´s the related line 7 : import _octopus So there´s a problem considering the .so file! What could be my next step? I know that´s a lot of confusing stuff but I hope anyone of you could bring some light in my mind! thy in advance

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• ASP.NET MVC hosting problem, routing, handlers and modules

  - by johnabs

  Hi, This is one of them again, hosting with fasthosts. I recently purchased a windows developer package from them. When I tried to deploy my ASP.NET 3.5 MVC project, which was working fine with the same host on a reseller account, it is not working. The reason to move from reseller to a normal Windows Developer package is, the MS-SQL server database is too expensive in a reseller account, strange! I contact them, and they are saying they upgraded the control panel. The technical support said, I need to disable the Modules and Handlers from the web.config file. Also I need to deploy them as .dll files. I am not sure how to do that. The website is partially working now. I think the problem is now with the routing. I have not deployed any .dlls apart from the System.Web.Mvc.dll, System.Web.Routing.dll and System.Web.Abstractions.dll. I have not got a clue on how to deploy the Modules and Handlers. The code that I commented on the web.config file is as follows. <!--<modules runAllManagedModulesForAllRequests="true"> <remove name="ScriptModule" /> <remove name="UrlRoutingModule" /> <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </modules> <handlers> <remove name="WebServiceHandlerFactory-Integrated"/> <remove name="ScriptHandlerFactory" /> <remove name="ScriptHandlerFactoryAppServices" /> <remove name="ScriptResource" /> <remove name="MvcHttpHandler" /> <remove name="UrlRoutingHandler" /> <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="MvcHttpHandler" preCondition="integratedMode" verb="*" path="*.mvc" type="System.Web.Mvc.MvcHttpHandler, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="UrlRoutingHandler" preCondition="integratedMode" verb="*" path="UrlRouting.axd" type="System.Web.HttpForbiddenHandler, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> </handlers>--> Anybody got any ideas please. Thank you for your time.

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• user generated / user specific functions

  - by pedalpete

  I'm looking for the most elegant and secure method to do the following. I have a calendar, and groups of users. Users can add events to specific days on the calendar, and specify how long each event lasts for. I've had a few requests from users to add the ability for them to define that events of a specific length include a break, of a certain amount of time, or require that a specific amount of time be left between events. For example, if event is 2 hours, include a 20min break. for each event, require 30 minutes before start of next event. The same group that has asked for an event of 2 hours to include a 20 min break, could also require that an event 3 hours include a 30 minute break. In the end, what the users are trying to get is an elapsed time excluding breaks calculated for them. Currently I provide them a total elapsed time, but they are looking for a running time. However, each of these requests is different for each group. Where one group may want a 30 minute break during a 2 hour event, and another may want only 10 minutes for each 3 hour event. I was kinda thinking I could write the functions into a php file per group, and then include that file and do the calculations via php and then return a calculated total to the user, but something about that doesn't sit right with me. Another option is to output the groups functions to javascript, and have it run client-side, as I'm already returning the duration of the event, but where the user is part of more than one group with different rules, this seems like it could get rather messy. I currently store the start and end time in the database, but no 'durations', and I don't think I should be storing the calculated totals in the db, because if a group decides to change their calculations, I'd need to change it throughout the db. Is there a better way of doing this? I would just store the variables in mysql, but I don't see how I can then say to mysql to calculate based on those variables. I'm REALLY lost here. Any suggestions? I'm hoping somebody has done something similar and can provide some insight into the best direction. If it helps, my table contains eventid, user, group, startDate, startTime, endDate, endTime, type The json for the event which I return to the user is {"eventid":"'.$eventId.'", "user":"'.$userId.'","group":"'.$groupId.'","type":"'.$type.'","startDate":".$startDate.'","startTime":"'.$startTime.'","endDate":"'.$endDate.'","endTime":"'.$endTime.'","durationLength":"'.$duration.'", "durationHrs":"'.$durationHrs.'"} where for example, duration length is 2.5 and duration hours is 2:30.

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• Master Details and collectionViewSource in separate views cannot make it work.

  - by devnet247

  Hi all, I really cannot seem to make/understand how it works with separate views It all works fine if a bundle all together in a single window. I have a list of Countries-Cities-etc... When you select a country it should load it's cities. Works So I bind 3 listboxes successfully using collection sources and no codebehind more or less (just code to set the datacontext and selectionChanged). you can download the project here http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip <Window.Resources> <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCityList},Path=Hotels}" x:Key="cvsHotelList"/> </Window.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Text="Countries"/> <TextBlock Grid.Column="1" Grid.Row="0" Text="Cities"/> <TextBlock Grid.Column="2" Grid.Row="0" Text="Hotels"/> <ListBox Grid.Column="0" Grid.Row="1" Name="lstCountries" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCountryList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="1" Grid.Row="1" Name="lstCities" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCityList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="2" Grid.Row="1" Name="lstHotels" ItemsSource="{Binding Source={StaticResource cvsHotelList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> </Grid> Does not work I am trying to implement the same using a view for each eg(LeftSideMasterControl -RightSideDetailsControls) However I cannot seem to make them bind. Can you help? I would be very grateful so that I can understand how you communicate between userControls You can download the project here. http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip I have as follows LeftSideMasterControl.xaml <Grid> <ListBox Name="lstCountries" SelectionChanged="OnSelectionChanged" DisplayMemberPath="Name" ItemsSource="{Binding Countries}"/> </Grid> RightViewDetailsControl.xaml MainView.xaml <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> </UserControl.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition Width="3*"/> </Grid.ColumnDefinitions> <Views:LeftViewMasterControl x:Name="leftSide" Margin="5" Content="{Binding Source=}"/> <GridSplitter Grid.Column="0" Grid.Row="0" Background="LightGray"/> <Views:RightViewDetailsControl Grid.Column="1" x:Name="RightSide" Margin="5"/> </Grid> ViewModels public class CountryListVM : ViewModelBase { public CountryListVM() { Countries = new ObservableCollection<CountryVM>(); } public ObservableCollection<CountryVM> Countries { get; set; } private RelayCommand _loadCountriesCommand; public ICommand LoadCountriesCommand { get { return _loadCountriesCommand ?? (_loadCountriesCommand = new RelayCommand(x => LoadCountries(), x => CanLoadCountries)); } } private static bool CanLoadCountries { get { return true; } } private void LoadCountries() { var countryList = Repository.GetCountries(); foreach (var country in countryList) { Countries.Add(new CountryVM { Name = country.Name }); } } } public class CountryVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } public class CityListVM : ViewModelBase { private CountryVM _selectedCountry; public CityListVM(CountryVM country) { SelectedCountry = country; Cities = new ObservableCollection<CityVM>(); } public ObservableCollection<CityVM> Cities { get; set; } public CountryVM SelectedCountry { get { return _selectedCountry; } set { _selectedCountry = value; OnPropertyChanged("SelectedCountry"); } } private RelayCommand _loadCitiesCommand; public ICommand LoadCitiesCommand { get { return _loadCitiesCommand ?? (_loadCitiesCommand = new RelayCommand(x => LoadCities(), x => CanLoadCities)); } } private static bool CanLoadCities { get { return true; } } private void LoadCities() { var cities = Repository.GetCities(SelectedCountry.Name); foreach (var city in cities) { Cities.Add(new CityVM() { Name = city.Name }); } } } public class CityVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } Models ========= public class Country { public Country() { Cities = new ObservableCollection<City>(); } public string Name { get; set; } public ObservableCollection<City> Cities { get; set; } } public class City { public City() { Hotels = new ObservableCollection<Hotel>(); } public string Name { get; set; } public ObservableCollection<Hotel> Hotels { get; set; } } public class Hotel { public string Name { get; set; } }

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• Html.BeginForm() not rendering properly

  - by Taskos George

  While searching in stackoverflow the other questions didn't exactly helped in my situation. How it would be possible to debug such an error like the one that the Html.BeginForm does not properly rendered to the page. I use this code @model ExtremeProduction.Models.SelectUserGroupsViewModel @{ ViewBag.Title = "User Groups"; } <h2>Groups for user @Html.DisplayFor(model => model.UserName)</h2> <hr /> @using (Html.BeginForm("UserGroups", "Account", FormMethod.Post, new { encType = "multipart/form-data", id = "userGroupsForm" })) { @Html.AntiForgeryToken() <div class="form-horizontal"> @Html.ValidationSummary(true) <div class="form-group"> <div class="col-md-10"> @Html.HiddenFor(model => model.UserName) </div> </div> <h4>Select Group Assignments</h4> <br /> <hr /> <table> <tr> <th> Select </th> <th> Group </th> </tr> @Html.EditorFor(model => model.Groups) </table> <br /> <hr /> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Save" class="btn btn-default" /> </div> </div> </div> } <div> @Html.ActionLink("Back to List", "Index") </div> EDIT: Added the Model // Wrapper for SelectGroupEditorViewModel to select user group membership: public class SelectUserGroupsViewModel { public string UserName { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public List<SelectGroupEditorViewModel> Groups { get; set; } public SelectUserGroupsViewModel() { this.Groups = new List<SelectGroupEditorViewModel>(); } public SelectUserGroupsViewModel(ApplicationUser user) : this() { this.UserName = user.UserName; this.FirstName = user.FirstName; this.LastName = user.LastName; var Db = new ApplicationDbContext(); // Add all available groups to the public list: var allGroups = Db.Groups; foreach (var role in allGroups) { // An EditorViewModel will be used by Editor Template: var rvm = new SelectGroupEditorViewModel(role); this.Groups.Add(rvm); } // Set the Selected property to true where user is already a member: foreach (var group in user.Groups) { var checkUserRole = this.Groups.Find(r => r.GroupName == group.Group.Name); checkUserRole.Selected = true; } } } // Used to display a single role group with a checkbox, within a list structure: public class SelectGroupEditorViewModel { public SelectGroupEditorViewModel() { } public SelectGroupEditorViewModel(Group group) { this.GroupName = group.Name; this.GroupId = group.Id; } public bool Selected { get; set; } [Required] public int GroupId { get; set; } public string GroupName { get; set; } } public class Group { public Group() { } public Group(string name) : this() { Roles = new List<ApplicationRoleGroup>(); Name = name; } [Key] [Required] public virtual int Id { get; set; } public virtual string Name { get; set; } public virtual ICollection<ApplicationRoleGroup> Roles { get; set; } } ** EDIT ** And I get this form http://i834.photobucket.com/albums/zz268/gtas/formmine_zpsf6470e02.png I should receive a form like the one that I copied the code like this http://i834.photobucket.com/albums/zz268/gtas/formcopied_zpsdb2f129e.png Any ideas where or how to look the source of evil that makes my life hard for some time now?

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• 404 in ASP.NET MVC with Integrated Pipeline mode

  - by David Martines

  IIS 7.0 (Shared Hosting) ASP.NET 2.0 Integrated Pipeline mode MVC 1.0 I get a 404 on every url except /default.aspx. I have this in my web.config: <system.webServer> <defaultDocument enabled="true"> <files> <clear /> <add value="Default.aspx" /> </files> </defaultDocument> <directoryBrowse enabled="false" /> <validation validateIntegratedModeConfiguration="false" /> <handlers> <add name="ScriptHandlerFactory_asmx" verb="*" path="*.asmx" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="ScriptHandlerFactory_axd" verb="*" path="*_AppService.axd" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="ScriptResourceHandler" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="MvcHttpHandler" verb="*" path="*.mvc" type="System.Web.Mvc.MvcHttpHandler, System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="ErrorLogPageFactory" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" /> </handlers> <modules runAllManagedModulesForAllRequests="true"> <remove name="ScriptModule" /> <remove name="UrlRoutingModule" /> <remove name="ErrorLog" /> <remove name="UnitOfWorkModule" /> <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="UnitOfWorkModule" type="MusicCompany.Infrastructure.UnitOfWorkModule, MusicCompany.Infrastructure" /> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> </modules> The only unusual thing to me is the defaultDocument. It seems I need it because of the way the host (shared hosting) is set up (?) Any clues? Thanks

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• FSM spellchecker

  - by Durell

  I would love to have a debugged copy of the finite state machine code below. I tried debugging but could not, all the machine has to do is to spell check the word "and",an equivalent program using case is welcomed. #include<cstdlib> #include<stdio.h> #include<string.h> #include<iostream> #include<string> using namespace std; char in_str; int n; void spell_check() { char data[256]; int i; FILE *in_file; in_file=fopen("C:\\Users\\mytorinna\\Desktop\\a.txt","r+"); while (!feof(in_file)) { for(i=0;i<256;i++) { fscanf(in_file,"%c",in_str); data[i]=in_str; } //n = strlen(in_str); //start(data); cout<<data; } } void start(char data) { // char next_char; //int i = 0; // for(i=0;i<256;i++) // if (n == 0) { if(data[i]="a") { state_A(); exit; } else { cout<<"I am comming"; } // cout<<"This is an empty string"; // exit();//do something here to terminate the program } } void state_A(int i) { if(in_str[i] == 'n') { i++; if(i<n) state_AN(i); else error(); } else error(); } void state_AN(int i) { if(in_str[i] == 'd') { if(i == n-1) cout<<" Your keyword spelling is correct"; else cout<<"Wrong keyword spelling"; } } int main() { spell_check(); system("pause"); return 0; }

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• SQL Server 2008 Filestream Impersonation Access Denied error

  - by Adi

  I've been trying to upload a file to the database using SQL SERVER 2008 Filestream and Impersonation technique to save the file in the file system, but i keep getting Access Denied error; even though i've set the permissions for the impersonating user to the Filestream folder(C:\SQLFILESTREAM\Dev_DB). when i debugged the code, i found the server return a unc path(\Server_Name\MSSQLSERVER\v1\Dev_LMDB\dbo\FileData\File_Data\13C39AB1-8B91-4F5A-81A1-940B58504C17), which was not accessible through windows explorer. I've my web application hosted on local maching(Windows 7). SQL Server is located on a remote server(Windows Server 2008 R2). Sql authentication was used to call the stored procedure. Following is the code i've used to do the above operations. SqlCommand sqlCmd = new SqlCommand("AddFile"); sqlCmd.CommandType = CommandType.StoredProcedure; sqlCmd.Parameters.Add("@File_Name", SqlDbType.VarChar, 512).Value = filename; sqlCmd.Parameters.Add("@File_Type", SqlDbType.VarChar, 5).Value = Path.GetExtension(filename); sqlCmd.Parameters.Add("@Username", SqlDbType.VarChar, 20).Value = username; sqlCmd.Parameters.Add("@Output_File_Path", SqlDbType.VarChar, -1).Direction = ParameterDirection.Output; DAManager PDAM = new DAManager(DAManager.getConnectionString()); using (SqlConnection connection = (SqlConnection)PDAM.CreateConnection()) { connection.Open(); SqlTransaction transaction = connection.BeginTransaction(); WindowsImpersonationContext wImpersonationCtx; NetworkSecurity ns = null; try { PDAM.ExecuteNonQuery(sqlCmd, transaction); string filepath = sqlCmd.Parameters["@Output_File_Path"].Value.ToString(); sqlCmd = new SqlCommand("SELECT GET_FILESTREAM_TRANSACTION_CONTEXT()"); sqlCmd.CommandType = CommandType.Text; byte[] Context = (byte[])PDAM.ExecuteScalar(sqlCmd, transaction); byte[] buffer = new byte[4096]; int bytedRead; ns = new NetworkSecurity(); wImpersonationCtx = ns.ImpersonateUser(IMP_Domain, IMP_Username, IMP_Password, LogonType.LOGON32_LOGON_INTERACTIVE, LogonProvider.LOGON32_PROVIDER_DEFAULT); SqlFileStream sfs = new SqlFileStream(filepath, Context, System.IO.FileAccess.Write); while ((bytedRead = inFS.Read(buffer, 0, buffer.Length)) != 0) { sfs.Write(buffer, 0, bytedRead); } sfs.Close(); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); } finally { sqlCmd.Dispose(); connection.Close(); connection.Dispose(); ns.undoImpersonation(); wImpersonationCtx = null; ns = null; } } Can someone help me with this issue. Reference Exception: Type : System.ComponentModel.Win32Exception, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : Access is denied Source : System.Data Help link : NativeErrorCode : 5 ErrorCode : -2147467259 Data : System.Collections.ListDictionaryInternal TargetSite : Void OpenSqlFileStream(System.String, Byte[], System.IO.FileAccess, System.IO.FileOptions, Int64) Stack Trace : at System.Data.SqlTypes.SqlFileStream.OpenSqlFileStream(String path, Byte[] transactionContext, FileAccess access, FileOptions options, Int64 allocationSize) at System.Data.SqlTypes.SqlFileStream..ctor(String path, Byte[] transactionContext, FileAccess access, FileOptions options, Int64 allocationSize) at System.Data.SqlTypes.SqlFileStream..ctor(String path, Byte[] transactionContext, FileAccess access) Thanks

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• DependencyProperty binding not happening on initial load

  - by Ari Roth

  I'm trying to do something simple -- make a DependencyProperty and then bind to it. However, the getter doesn't appear to fire when I start up the app. (I'm guessing the solution will make me smack my head and go "Doh!", but still. :) ) Any ideas? Code-behind code: public static readonly DependencyProperty PriorityProperty = DependencyProperty.Register("Priority", typeof (Priority), typeof (PriorityControl), null); public Priority Priority { get { return (Priority)GetValue(PriorityProperty); } set { SetValue(PriorityProperty, value); } } Control XAML: <ListBox Background="Transparent" BorderThickness="0" ItemsSource="{Binding Path=Priorities}" Name="PriorityList" SelectedItem="{Binding Path=Priority, Mode=TwoWay}"> <ListBox.ItemTemplate> <DataTemplate> <Grid Height="16" Width="16"> <Border BorderBrush="Black" BorderThickness="2" CornerRadius="3" Visibility="{Binding RelativeSource= {RelativeSource Mode=FindAncestor, AncestorType=ListBoxItem}, Path=IsSelected, Converter={StaticResource boolToVisibilityConverter}}" /> <Border CornerRadius="3" Height="12" Width="12"> <Border.Background> <SolidColorBrush Color="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListBoxItem}, Path=Content, Converter={StaticResource priorityToColorConverter}}" /> </Border.Background> </Border> </Grid> </DataTemplate> </ListBox.ItemTemplate> <ListBox.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal"/> </ItemsPanelTemplate> </ListBox.ItemsPanel> </ListBox> Binding statement: <UI:PriorityControl Grid.Column="8" Priority="{Binding Path=Priority}" VerticalAlignment="Center"/> Some other notes: Binding is in a UserControl UserControl contains the PriorityControl PriorityControl contains the DependencyProperty I've checked that the data the UserControl is getting the appropriate data -- every other binding works. If I change the selection on the PriorityControl via the mouse, everything fires as appropriate. It's just that initial setting of the value that isn't working. Priority is an enum.

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• How to write a cctor and op= for a factory class with ptr to abstract member field?

  - by Kache4

  I'm extracting files from zip and rar archives into raw buffers. I created the following to wrap minizip and unrarlib: Archive.hpp #include "ArchiveBase.hpp" #include "ArchiveDerived.hpp" class Archive { public: Archive(string path) { /* logic here to determine type */ switch(type) { case RAR: archive_ = new ArchiveRar(path); break; case ZIP: archive_ = new ArchiveZip(path); break; case UNKNOWN_ARCHIVE: throw; break; } } Archive(Archive& other) { archive_ = // how do I copy an abstract class? } ~Archive() { delete archive_; } void passThrough(ArchiveBase::Data& data) { archive_->passThrough(data); } Archive& operator = (Archive& other) { if (this == &other) return *this; ArchiveBase* newArchive = // can't instantiate.... delete archive_; archive_ = newArchive; return *this; } private: ArchiveBase* archive_; } ArchiveBase.hpp class ArchiveBase { public: // Is there any way to put this struct in Archive instead, // so that outside classes instantiating one could use // Archive::Data instead of ArchiveBase::Data? struct Data { int field; }; virtual void passThrough(Data& data) = 0; /* more methods */ } ArchiveDerived.hpp "Derived" being "Zip" or "Rar" #include "ArchiveBase.hpp" class ArchiveDerived : public ArchiveBase { public: ArchiveDerived(string path); void passThrough(ArchiveBase::Data& data); private: /* fields needed by minizip/unrarlib */ // example zip: unzFile zipFile_; // example rar: RARHANDLE rarFile_; } ArchiveDerived.cpp #include "ArchiveDerived.hpp" ArchiveDerived::ArchiveDerived(string path) { //implement } ArchiveDerived::passThrough(ArchiveBase::Data& data) { //implement } Somebody had suggested I use this design so that I could do: Archive archiveFile(pathToZipOrRar); archiveFile.passThrough(extractParams); // yay polymorphism! How do I write a cctor for Archive? What about op= for Archive? What can I do about "renaming" ArchiveBase::Data to Archive::Data? (Both minizip and unrarlib use such structs for input and output. Data is generic for Zip & Rar and later is used to create the respective library's struct.)

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• what do i need to do so that mod_wsgi will find libmysqlclient.16.dylib? (osx 10.7 with apache mod_wsgi)

  - by compound eye

  I am trying to run django on osx 10.7 (lion) with apache mod_wsgi and virtualenv. My site works if I use the django testing server: (baseline)otter:hello mathew$ python manage.py runserver but it doesn't work when I run apache. The core of the error seems to be Library not loaded: libmysqlclient.16.dylib I think its to do with the path apache is using to locate libmysqlclient.16.dylib when I run otool in the lib directory it looks good otter:lib mathew$ pwd /usr/local/mysql/lib otter:lib mathew$ otool -L libmysqlclient.16.dylib libmysqlclient.16.dylib: libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.1) but from outside it can't find it otter:lib mathew$ cd / otter:/ mathew$ otool -L libmysqlclient.16.dylib otool: can't open file: libmysqlclient.16.dylib (No such file or directory) if i manually set DYLD_LIBRARY_PATH otool works otter:lib mathew$ DYLD_LIBRARY_PATH=/usr/local/mysql/lib otter:lib mathew$ otool -L libmysqlclient.16.dylib libmysqlclient.16.dylib: libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.1) When I run the django testing server, my .bash_profile sets up the virtualenv and the path to the mysql dynamic library export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/:$DYLD_LIBRARY_PATH export PATH When i run apache it finds my virtualenv paths, but it doesn't seem to find the dynamic library path. I tried adding this path to /usr/sbin/envvars DYLD_LIBRARY_PATH="/usr/lib:/usr/local/mysql/lib:$DYLD_LIBRARY_PATH" export DYLD_LIBRARY_PATH and to /private/etc/paths.d/libmysql /usr/local/mysql/lib then restarted the machine but that has not changed the error message. Error loading MySQLdb module: dlopen(/usr/local/python_virtualenv/baseline/lib/python2.7/site-packages/_mysql.so, 2): Library not loaded: libmysqlclient.16.dylib I don't think is a permissions issue: -rwxr-xr-x 1 root wheel 3787328 4 Dec 2010 libmysqlclient.16.dylib drwxr-xr-x 39 root wheel 1394 18 Nov 21:07 / drwxr-xr-x@ 15 root wheel 510 24 Oct 22:10 /usr drwxrwxr-x 20 root admin 680 2 Nov 20:22 /usr/local drwxr-xr-x 20 mathew admin 680 9 Nov 21:58 /usr/local/python_virtualenv drwxr-xr-x 6 mathew admin 204 2 Nov 21:36 /usr/local/python_virtualenv/baseline drwxr-xr-x 4 mathew admin 136 2 Nov 21:26 /usr/local/python_virtualenv/baseline/lib drwxr-xr-x 52 mathew admin 1768 2 Nov 21:26 /usr/local/python_virtualenv/baseline/lib/python2.7 drwxr-xr-x 18 mathew admin 612 4 Nov 21:20 /usr/local/python_virtualenv/baseline/lib/python2.7/site-packages -rwxr-xr-x 1 mathew admin 66076 2 Nov 21:18 /usr/local/python_virtualenv/baseline/lib/python2.7/site-packages/_mysql.so What do i need to do so that mod_wsgi will find libmysqlclient.16.dylib? apache and mysql are both 64 bit: otter:lib mathew$ file /usr/sbin/httpd /usr/sbin/httpd: Mach-O universal binary with 2 architectures /usr/sbin/httpd (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/sbin/httpd (for architecture i386): Mach-O executable i386 otter:lib mathew$ otter:lib mathew$ file /usr/local/mysql/lib/libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib: Mach-O 64-bit dynamically linked shared library x86_64

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• Fill a list from JSP in Spring

  - by Javi

  Hello, I have something like this in my Spring Application: public class Book{ public Book(){ sheets = new LinkedList<Sheet>(); } protected List<Sheet> sheets; //getter and setter } I add several Sheets to the sheet list and I print a form in a JSP like this: <form:form modelAttribute="book" action="${dest_url}" method="POST"> <c:forEach items="${mybook.sheets}" var="sheet" varStatus="status"> <form:hidden path="sheet[${status.count -1}].header"/> <form:hidden path="sheet[${status.count -1}].footer"/> <form:hidden path="sheet[${status.count -1}].operador"/> <form:hidden path="sheet[${status.count -1}].number"/> <form:hidden path="sheet[${status.count -1}].lines"/> </c:forEach> ... </form:form> I need to get back this list in the controller when the form is submitted. So in my controller I have a method with a parameter like this: public String myMethod (@ModelAttribute("book") Book book, Model model){ ... } The problem is that it doesn't fill the sheets list unless in the constructor of Book I add as much Sheet's as I want to get. The problem is that I don't know in advance the number of Sheets the book is going to have. I think the problem is that in my method it instantiates Book which has a list of sheets with 0 elements. When it tries to access to sheets[0] the list is empty and it doen't add a Sheet. I've tried to create a getter method for the list with an index parameter (so it can create the element if it doesn't exists in the list like in Struts framework) like this one: public Sheet getSheets(int index){ if(sheets.size() <= index){ Sheet sheet = new Sheet(); sheets.add(index, sheet); } Sheet sheetToReturn = sheets.get(index); if(sheetToReturn == null){ sheetToReturn = new Sheet(); sheets.add(index, sheetToReturn); } return sheetToReturn; } but with this method the JSP doesn't work because sheets has an invalid getter. What's the proper way of filling a list when you don't know the number of items in advanced? Thanks

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• How to create nested directories in PhoneGap

  - by Stallman

  I have tried on this, but this didn't satisfy my request at all. I write a new one: var file_system; var fs_root; window.requestFileSystem(LocalFileSystem.PERSISTENT, 1024*1024, onInitFs, request_FS_fail); function onInitFs(fs) { file_system= fs; fs_root= file_system.root; alert("ini fs"); create_Directory(); alert("ini fs done."); } var string_array; var main_dir= "story_repository/"+ User_Editime; string_array= new Array("story_repository/",main_dir, main_dir+"/rec", main_dir+"/img","story_repository/"+ User_Name ); function create_Directory(){ var start= 0; var path=""; while(start < string_array.length) { path = string_array[start]; alert(start+" th created directory " +" is "+ path); fs_root.getDirectory ( path , {create: true, exclusive: false}, function(entry) { alert(path +"is created."); }, create_dir_err() ); start++; }//while loop }//create_Directory function create_dir_err() { alert("Recursively create directories error."); } function request_FS_fail() { alert("Failed to request File System "); } Although the directories are created, the it sends me ErrorCallback:"alert("Recursively create directories error.");" Firstly, I don't think this code will work since I have tried on this: This one failed: window.requestFileSystem( LocalFileSystem.PERSISTENT, 0, //request file system success callback. function(fileSys) { fileSys.root.getDirectory( "story_repository/"+ dir_name, {create: true, exclusive: false}, //Create directory story_repository/Stallman_time. function(directory) { alert("Create directory: "+ "story_repository/"+ dir_name); //create dir_name/img/ fileSys.root.getDirectory { "story_repository/"+ dir_name + "/img/", {create: true, exclusive: false}, function(directory) { alert("Create a directory: "+ "story_repository/"+ dir_name + "/img/"); //check. //create dir_name/rec/ fileSys.root.getDirectory { "story_repository/"+ dir_name + "/rec/", {create: true, exclusive: false}, function(directory) { alert("Create a directory: "+ "story_repository/"+ dir_name + "/rec/"); //check. //Go ahead. }, createError } //create dir_name/rec/ }, createError } //create dir_name/img }, createError); }, //Create directory story_repository/Stallman_time. createError()); } I just repeatedly call fs.root.getDirectory only but it failed. But the first one is almost the same... 1. What is the problem at all? Why does the first one always gives me the ErrorCallback? 2. Why can't the second one work? 3. Does anyone has a better solution?(no ErrorcallBack msg) ps: I work on Android and PhoneGap 1.7.0.

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• Dependency property does not work within a geometry in a controltemplate

  - by Erik Bongers

  I have a DepencencyProperty (a boolean) that works fine on an Ellipse, but not on an ArcSegment. Am I doing something that is not possible? Here's part of the xaml. Both the TemplateBindings of Origin and LargeArc do not work in the geometry. But the LargeArc DependencyProperty does work in the Ellipse, so my DependencyProperty seems to be set up correctly. <ControlTemplate TargetType="{x:Type nodes:TestCircle}"> <Canvas Background="AliceBlue"> <Ellipse Height="10" Width="10" Fill="Yellow" Visibility="{TemplateBinding LargeArc, Converter={StaticResource BoolToVisConverter}}"/> <Path Canvas.Left="0" Canvas.Top="0" Stroke="Black" StrokeThickness="3"> <Path.Data> <GeometryGroup> <PathGeometry> <PathFigure IsClosed="True" StartPoint="{TemplateBinding Origin}"> <LineSegment Point="150,100" /> <ArcSegment Point="140,150" IsLargeArc="{TemplateBinding LargeArc}" Size="50,50" SweepDirection="Clockwise"/> </PathFigure> </PathGeometry> </GeometryGroup> </Path.Data> </Path> </Canvas> </ControlTemplate> What I'm trying to build is a (sort of) pie-shaped usercontrol where the shape of the Pie is defined by DependencyProperties and the actual graphics used are in a template, so they can be replaced or customized. In other words: I would like the code-behind to be visual-free (which, I assume, is good separation). SOLUTION--------------------------(I'm not allowed to answer my own questions yet) I found the answer myself, and this can be useful for others encountering the same issue. This is why the TemplateBinding on the Geometry failed: A TemplateBinding will only work when binding a DependencyProperty to another DependencyProperty. Following article set me on the right track: http://blogs.msdn.com/b/liviuc/archive/2009/12/14/wpf-templatebinding-vs-relativesource-templatedparent.aspx The ArcSegment properties are no DependencyProperties. Thus, the solution to the above problem is to replace <ArcSegment Point="140,150" IsLargeArc="{TemplateBinding LargeArc}" with <ArcSegment Point="140,150" IsLargeArc="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=LargeArc}" Colin, your working example where an 'ordinary' binding was used in the geometry set me on the right track. BTW, love the infographics and the construction of your UserControl in your blogpost. And, hey, that quick tip on code snippets, and especially on that DP attribute and the separation of those DPs into a partial class file is pure gold!

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• Finite State Machine Spellchecker

  - by Durell

  I would love to have a debugged copy of the finite state machine code below. I tried debugging but could not, all the machine has to do is to spell check the word "and",an equivalent program using case is welcomed. #include<cstdlib> #include<stdio.h> #include<string.h> #include<iostream> #include<string> using namespace std; char in_str; int n; void spell_check() { char data[256]; int i; FILE *in_file; in_file=fopen("C:\\Users\\mytorinna\\Desktop\\a.txt","r+"); while (!feof(in_file)) { for(i=0;i<256;i++) { fscanf(in_file,"%c",in_str); data[i]=in_str; } //n = strlen(in_str); //start(data); cout<<data; } } void start(char data) { // char next_char; //int i = 0; // for(i=0;i<256;i++) // if (n == 0) { if(data[i]="a") { state_A(); exit; } else { cout<<"I am comming"; } // cout<<"This is an empty string"; // exit();//do something here to terminate the program } } void state_A(int i) { if(in_str[i] == 'n') { i++; if(i<n) state_AN(i); else error(); } else error(); } void state_AN(int i) { if(in_str[i] == 'd') { if(i == n-1) cout<<" Your keyword spelling is correct"; else cout<<"Wrong keyword spelling"; } } int main() { spell_check(); system("pause"); return 0; }

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• parent process, and a child process..

  - by icelated

  I am trying to write a program that The parent process will take the arguments to main() and send the characters in them one at a time to the child process through a pipe (one call to write for each character). The child process will count the characters sent to it by the parent process and print out the number of characters it received from the parent. The child process should not use the arguments to main() in any way whatsoever. The child should return normally and not have the parent kill the child. Am i counting the arguments right? am i sending the arguments in one at a time, and am i reaping the child? #include <sys/wait.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #define size = 100; int main(int argc, char *argv[]) { int i, count =0; int c; int fdest[2]; // for pipe pid_t pid; //process IDs char buffer[BUFSIZ]; if (pipe(fdest) < 0) /* attempt to create pipe */ perror( "pipe" ); if ((pid = fork()) < 0) /* attempt to create child / parent process */ { perror( "fork" ); } /* parent process */ else if (pid > 0) { close(fdest[0]); for (i=1; i < argc; ++i) { for (c=0; c < strlen(argv[i]); ++c) { write(fdest[1], &argv[i][c], 1); } } close(fdest[1]); wait(NULL); exit(0); } else { /* child Process */ close(fdest[1]); while (read(fdest[0], &buffer, 1) > 0) { count++; } printf("\nchild: counted %d characters\n", count); } wait(NULL); exit(0); }

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• cannot retrieve effect.fx file

  - by numerical25

  I am having issues loading my effect.fx from directx. When I step into my application, my ID3D10Effect *m_pDefaultEffect; pointer remains empty. the address remains at 0x000000 below is my code #pragma once #include "stdafx.h" #include "resource.h" #include "d3d10.h" #include "d3dx10.h" #include "dinput.h" #define MAX_LOADSTRING 100 class RenderEngine { protected: RECT m_screenRect; //direct3d Members ID3D10Device *m_pDevice; // The IDirect3DDevice10 // interface ID3D10Texture2D *m_pBackBuffer; // Pointer to the back buffer ID3D10RenderTargetView *m_pRenderTargetView; // Pointer to render target view IDXGISwapChain *m_pSwapChain; // Pointer to the swap chain RECT m_rcScreenRect; // The dimensions of the screen ID3D10Texture2D *m_pDepthStencilBuffer; ID3D10DepthStencilState *m_pDepthStencilState; ID3D10DepthStencilView *m_pDepthStencilView; //transformation matrixs D3DXMATRIX g_mtxWorld; D3DXMATRIX g_mtxView; D3DXMATRIX g_mtxProj; //Effect members ID3D10Effect *m_pDefaultEffect; ID3D10EffectTechnique *m_pDefaultTechnique; ID3DX10Font *m_pFont; // The font used for rendering text // Sprites used to hold font characters ID3DX10Sprite *m_pFontSprite; ATOM RegisterEngineClass(); void DoFrame(float); bool LoadEffects(); public: static HINSTANCE m_hInst; HWND m_hWnd; int m_nCmdShow; TCHAR m_szTitle[MAX_LOADSTRING]; // The title bar text TCHAR m_szWindowClass[MAX_LOADSTRING]; // the main window class name void DrawTextString(int x, int y, D3DXCOLOR color, const TCHAR *strOutput); //static functions static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); static INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam); bool InitWindow(); bool InitDirectX(); bool InitInstance(); int Run(); void ShutDown(); RenderEngine() { m_screenRect.right = 800; m_screenRect.bottom = 600; } }; below is the implementation bool RenderEngine::LoadEffects() { HRESULT hr; ID3D10Blob *pErrors = 0; // Create the default rendering effect hr = D3DX10CreateEffectFromFile(L"effect.fx", NULL, NULL, "fx_4_0", D3D10_SHADER_DEBUG, 0, m_pDevice, NULL, NULL, &m_pDefaultEffect, &pErrors, NULL); if(pErrors)// at this point, m_pDefaultEffect is still empty but pErrors returns data which means there is {//errors return false; //ends here } //m_pDefaultTechnique = m_pDefaultEffect->GetTechniqueByName("DefaultTechnique"); return true; } My directx Device does work. My effect.fx file is in the same folder as my solution files (.cpp and header files)

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• why is this rails association loading individually after an eager load?

  - by codeman73

  I'm trying to avoid the N+1 queries problem with eager loading, but it's not working. The associated models are still being loaded individually. Here are the relevant ActiveRecords and their relationships: class Player < ActiveRecord::Base has_one :tableau end Class Tableau < ActiveRecord::Base belongs_to :player has_many :tableau_cards has_many :deck_cards, :through => :tableau_cards end Class TableauCard < ActiveRecord::Base belongs_to :tableau belongs_to :deck_card, :include => :card end class DeckCard < ActiveRecord::Base belongs_to :card has_many :tableaus, :through => :tableau_cards end class Card < ActiveRecord::Base has_many :deck_cards end and the query I'm using is inside this method of Player: def tableau_contains(card_id) self.tableau.tableau_cards = TableauCard.find :all, :include => [ {:deck_card => (:card)}], :conditions => ['tableau_cards.tableau_id = ?', self.tableau.id] contains = false for tableau_card in self.tableau.tableau_cards # my logic here, looking at attributes of the Card model, with # tableau_card.deck_card.card; # individual loads of related Card models related to tableau_card are done here end return contains end Does it have to do with scope? This tableau_contains method is down a few method calls in a larger loop, where I originally tried doing the eager loading because there are several places where these same objects are looped through and examined. Then I eventually tried the code as it is above, with the load just before the loop, and I'm still seeing the individual SELECT queries for Card inside the tableau_cards loop in the log. I can see the eager-loading query with the IN clause just before the tableau_cards loop as well. EDIT: additional info below with the larger, outer loop Here's the larger loop. It is inside an observer on after_save def after_save(pa) @game = Game.find(turn.game_id, :include => :goals) @game.players = Player.find :all, :include => [ {:tableau => (:tableau_cards)}, :player_goals ], :conditions => ['players.game_id =?', @game.id] for player in @game.players player.tableau.tableau_cards = TableauCard.find :all, :include => [ {:deck_card => (:card)}], :conditions => ['tableau_cards.tableau_id = ?', player.tableau.id] if(player.tableau_contains(card)) ... end end end

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• Problem compiling c++ in CodeGear

  - by Carlos

  I have written a C++ program for a University assignment. I used Netbeans 6.8 running on my Mac and the code runs smoothly, no warnings, errors or problems/bugs. However when compiling and running on a Windows computer using CodeGear RAD Studio 2009 (C++ Builder) am getting several errors. [BCC32 Error] main.cpp(51): E2094 'operator<<' not implemented in type 'ostream' for arguments of type 'string' [BCC32 Error] main.cpp(62): E2093 'operator==' not implemented in type 'string' for arguments of the same type [BCC32 Error] main.cpp(67): E2093 'operator==' not implemented in type 'string' for arguments of the same type [BCC32 Error] main.cpp(112): E2093 'operator==' not implemented in type 'string' for arguments of the same type [BCC32 Error] main.cpp(121): E2094 'operator<<' not implemented in type 'ostream' for arguments of type 'string' [BCC32 Error] main.cpp(130): E2093 'operator==' not implemented in type 'string' for arguments of the same type [BCC32 Error] main.cpp(133): E2094 'operator<<' not implemented in type 'ostream' for arguments of type 'string' [BCC32 Error] main.cpp(139): E2094 'operator<<' not implemented in type 'ostream' for arguments of type 'string' [BCC32 Error] main.cpp(153): E2094 'operator<<' not implemented in type 'fstream' for arguments of type 'string' [BCC32 Error] main.cpp(199): E2094 'operator>>' not implemented in type 'fstream' for arguments of type 'string' [BCC32 Error] main.cpp(219): E2094 'operator>>' not implemented in type 'istream' for arguments of type 'string' [BCC32 Error] main.cpp(231): E2094 'operator>>' not implemented in type 'istream' for arguments of type 'string' [BCC32 Error] main.cpp(240): E2094 'operator>>' not implemented in type 'istream' for arguments of type 'string' [BCC32 Error] main.cpp(262): E2094 'operator>>' not implemented in type 'istream' for arguments of type 'string' [BCC32 Error] main.cpp(264): E2094 'operator>>' not implemented in type 'istream' for arguments of type 'string' These are the header files am using #include <iostream> #include <fstream> #include <cmath> #include <stdio> #include <windows> //I added this one just to check and still does not work (I didnt have it on Netbeans/Mac) using namespace std; Any ideas what is producing the errors and how can I fix it?

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