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• Test Results window in VS2008 not showing results

  - by TimK

  I have an existing solution that has been working for a long time, containing around 600 tests in a couple of test projects. I recently moved to a new PC - it's Win7-x64, and I installed a fresh copy of VS2008. When I first opened the solution on the new machine, the Test List Editor was completely empty. Trying to create a new test list caused the editor to refresh, and now it shows my test lists, but they're acting funny. I can select tests in the lists, and run them, but the results window doesn't usually update automatically to show the results of the latest test. It has done this when running a single test a couple of times, but even that is not consistent. The only way I can view the results is by manually going to the Test Runs window and connecting to individual test runs. When I do that, the results show up in the results list, but I can't check them to re-run the failed tests - the check boxes are all disabled. I guess I should describe the way it used to work, in case that was unusual - I used to select some tests from the Test Lists window, tell it to run them, and the results window would clear itself, and then display the results from the current run. I could then check any tests that I wanted to re-run, and use the run/debug button in the results window to do so. Any ideas what's going on here?

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• ffmpeg(libavcodec). memory leaks in avcodec_encode_video

  - by gavlig

  I'm trying to transcode a video with help of libavcodec. On transcoding big video files(hour or more) i get huge memory leaks in avcodec_encode_video. I have tried to debug it, but with different video files different functions produce leaks, i have got a little bit confused about that :). [Here] (http://stackoverflow.com/questions/4201481/ffmpeg-with-qt-memory-leak) is the same issue that i have, but i have no idea how did that person solve it. QtFFmpegwrapper seems to do the same i do(or i missed something). my method is lower. I took care about aFrame and aPacket outside with av_free and av_free_packet. int Videocut::encode( AVStream *anOutputStream, AVFrame *aFrame, AVPacket *aPacket ) { AVCodecContext *outputCodec = anOutputStream->codec; if (!anOutputStream || !aFrame || !aPacket) { return 1; /* NOTREACHED */ } uint8_t * buffer = (uint8_t *)malloc( sizeof(uint8_t) * _DefaultEncodeBufferSize ); if (NULL == buffer) { return 2; /* NOTREACHED */ } int packetSize = avcodec_encode_video( outputCodec, buffer, _DefaultEncodeBufferSize, aFrame ); if (packetSize < 0) { free(buffer); return 1; /* NOTREACHED */ } aPacket->data = buffer; aPacket->size = packetSize; return 0; }

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• Precompiled headers question

  - by Kotti

  Hello! I am right now reorganizing my project and what recently was a simple application now became a pair of C++ projects - static library and real application. I would like to share one precompiled header between two projects, but face some troubles with setting up the .pdb file paths. Assume my first project is called Library and builds it's .lib file with a corresponding Library.pdb file. Now, the second project is called Application and builds everything into the same folder (.exe and another Application.pdb file). Right now my both projects create their own precompiled headers file (Library.pch and Application.pch) based on one actual header file. It works, but I think it's a waste of time and I also think there should be a way to share one precompiled header between two projects. If in my Application project I try to set the Use Precompiled Header (/Yu) option and set it to Library.pch, it wouldn't work, because of the following error: error C2858: command-line option 'program database name "Application.pdb" inconsistent with precompiled header, which used "Library.pdb". So, does anyone know some trick or way to share one precompiled header between two projects preserving proper debug information?

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• Using PHP cURL with an HTTP Debugging Proxy

  - by Kane

  I'm using the app "Fiddler" to debug a GET attempt to a website via PHP cURL. In order to see the cURL traffic I had to specify that the cURL connection use the Fiddler proxy (see code below). $ch = curl_init(); curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1); curl_setopt($ch, CURLOPT_PROXY, '127.0.0.1:8888'); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); curl_setopt($ch, CURLOPT_TIMEOUT, 10); curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'read_header'); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_USERAGENT, $user_agent); curl_setopt($ch, CURLOPT_REFERER, "http://domain.com"); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_COOKIEJAR, "my_cookies.txt"); curl_setopt($ch, CURLOPT_COOKIEFILE, "my_cookies.txt"); curl_setopt($ch, CURLOPT_URL, "http://domain.com"); $response = curl_exec($ch); But the problem is that in Fiddler I can only see this: Request (domain.com is just an alias): CONNECT domain.com:80 HTTP/1.1 Response: HTTP/1.1 200 Blind-Connection Established If I manually load the website in a browser Fiddler gives me WAY more information. I can see the cookies, the header information, and what I'm receiving via the GET. Any ideas why Fiddler can't see more useful information from PHP cURL? Edit: I tried turning on the "Enable HTTPS Decryption" option inside Tools / Fiddler Options / HTTPS (which I'm not sure why I'd need to use as I didn't tell cURL to use HTTPS). Unfortunately, by changing this setting I now get a Response of: HTTP/1.1 502 Connection failed Edit: If it helps, the app "Charles" shows me WAY more information than Fiddler, but I really want to figure out Fiddler since I like it better.

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• extract specific element from nested elements using lxml html

  - by Dan.StackOverflow

  Hi all I am having some problems that I think can be attributed to xpath problems. I am using the html module from the lxml package to try and get at some data. I am providing the most simplified situation below, but keep in mind the html I am working with is much uglier. <table> <tr> <td> <table> <tr><td></td></tr> <tr><td> <table> <tr><td><u><b>Header1</b></u></td></tr> <tr><td>Data</td></tr> </table> </td></tr> </table> </td></tr> </table> What I really want is the deeply nested table, because it has the header text "Header1". I am trying like so: from lxml import html page = '...' tree = html.fromstring(page) print tree.xpath('//table[//*[contains(text(), "Header1")]]') but that gives me all of the table elements. I just want the one table that contains this text. I understand what is going on but am having a hard time figuring out how to do this besides breaking out some nasty regex. Any thoughts?

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• log4net: Creating a logger dynamically, should I worry about anything?

  - by vtortola

  Hi, I need to create loggers dynamically, so with a post from here and the help of reflector I have managed to create loggers dynamically, but I'd like to know if I should worry about something else ... I don't know wich implications can have do it. public static ILog GetDyamicLogger(Guid applicationId) { Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); RollingFileAppender roller = new RollingFileAppender(); roller.LockingModel = new log4net.Appender.FileAppender.MinimalLock(); roller.AppendToFile = true; roller.RollingStyle = RollingFileAppender.RollingMode.Composite; roller.MaxSizeRollBackups = 14; roller.MaximumFileSize = "15000KB"; roller.DatePattern = "yyyyMMdd"; roller.Layout = new log4net.Layout.PatternLayout(); roller.File = "App_Data\\Logs\\"+applicationId.ToString()+"\\debug.log"; roller.StaticLogFileName = true; PatternLayout patternLayout = new PatternLayout(); patternLayout.ConversionPattern = "%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"; patternLayout.ActivateOptions(); roller.Layout = patternLayout; roller.ActivateOptions(); hierarchy.Root.AddAppender(roller); hierarchy.Root.Level = Level.All; hierarchy.Configured = true; DummyLogger dummyILogger = new DummyLogger(applicationId.ToString()); dummyILogger.Hierarchy = hierarchy; dummyILogger.Level = log4net.Core.Level.All; dummyILogger.AddAppender(roller); return new LogImpl(dummyILogger); } internal sealed class DummyLogger : Logger { // Methods internal DummyLogger(string name) : base(name) { } } Cheers.

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• Groovlet not working in GWT project, container : embedded Jetty in google plugin

  - by user325284

  Hi, I am working on a GWT application which uses GWT-RPC. I just made a test groovlet to see if it worked, but ran into some problems here's my groovlet package groovy.servlet; print "testing the groovlet"; Every tutorial said we don't need to subclass anything, and just a simple script would act as a servlet. my web.xml looks like this - <!-- groovy --> <servlet> <servlet-name>testGroovy</servlet-name> <servlet-class>groovy.servlet.testGroovy</servlet-class> </servlet> <servlet-mapping> <servlet-name>testGroovy</servlet-name> <url-pattern>*.groovy</url-pattern> </servlet-mapping When I Run as - web application, i get the following error from jetty : [WARN] failed testGroovy javax.servlet.UnavailableException: Servlet class groovy.servlet.testGroovy is not a javax.servlet.Servlet at org.mortbay.jetty.servlet.ServletHolder.checkServletType(ServletHolder.java:377) at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:234) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:616) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448) at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:447) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:222) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:543) at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421) at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035) at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783) at com.google.gwt.dev.DevMode.main(DevMode.java:275) What did I miss ?

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• iPhone UI addSubview causing concurrency exception

  - by Eli

  This is really odd... I run my app, and while it is opening and the views are constructing I get: Collection <CALayerArray: 0x124650> was mutated while being enumerated. The code trace goes through the following: main UIApplicationMain -[UIApplication _run] CFRunLoopRunInMode CFRunLoopRunSpecific _UIApplicationHandleEvent -[UIApplication sendEvent:] -[UIApplication handleEvent:withNewEvent:] -[UIApplication _runWithURL:sourceBundleID:] -[UIApplication _performInitilizationWithURL:sourceBundleID:] -[AppDelegate applicationDidFinishLaunching:] +[Controller initializeController] //This is my own function [window addSubview: pauseMenuController.view] //This is the last point of my code it goes through -[UIView(Hierarchy) addSubview:] -[UIView(Internal) _addSubview:positioned:relativeTo:] -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:] -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:] -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:] _NSFastEnumerationMutationHandler objc_exception_throw I've run the game lots and lots and lots of times and I've never seen this, then suddenly it popped up. The weird thing is that I'm not creating any other threads (that I know of) until after this code all gets called. It'll be easier for me to debug this if someone can give me some explanation of what might be getting modified while it's being accessed in a UIView. Does it have something to do with adding something to the view while it's already adding something, maybe? Any ideas?

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• How to pass PHP variable as FlashVars via SWFObject

  - by Matt

  I am trying to take a PHP variable and pass it along to Flash via Flash vars. My end goal is to pass a string formatted as XML to Flash, but because I'm struggling I've stripped everything down to the basics. I'm just trying to pass a simple PHP string variable to Flash via FlashVars with SWFObject but something isn't right. The page won't load when I try to pass the variable inside of php tags, but it will load if I just pass a hard coded string. The basic structure of my page is that I have some PHP declared at the top like so: PHP <?php $test = "WTF"; ?> Some HTML (excluded here for simplicity sake) and then the JavaScript SWFObject Embed within my HTML: <script type="text/javascript" src="js/swfobject2.js"></script> <script type="text/javascript"> // <![CDATA[ var swfURL = "swfs/Init-Flash-PHP.swf"; var flashvars = {}; flashvars.theXML = <?php print $test ?>; var params = {}; //params.menu = "false"; params.scale = "showAll"; params.bgcolor = "#000000"; params.salign = "TL"; //params.wmode = "transparent"; params.allowFullScreen = "true"; params.allowScriptAccess = "always"; var attributes = {}; attributes.id = "container"; attributes.name = "container"; swfobject.embedSWF(swfURL, "container", '100%', '100%', "9.0.246", "elements/swfs/expressinstall.swf", flashvars, params, attributes); // ]]> </script> And the bare essentials of the ActionScript 3 Code: _paramObj = LoaderInfo(stage.loaderInfo).parameters; theText_txt.text = _paramObj['theXML']; How do I pass a PHP variable using SWFObject and FlashVars? Thanks.

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• Thumbnail Provider not working

  - by Dan

  I'm trying to write a Windows Explorer thumbnail handler for our custom file type. I've got this working fine for the preview pane, but am having trouble getting it to work for the thumbnails. Windows doesn't even seem to be trying to call the DllGetClassObject entry point. Before I continue, note that I'm using Windows 7 and unmanaged C++. I've registered the following values in the registry: HKCR\CLSID\<my guid> HKCR\CLSID\<my guid>\InprocServer32 (default value being path to my DLL) HKCR\CLSID\<my guid>\InprocServer32\ThreadingModel (value = "Apartment") HKCR\.<my ext>\shellex\{E357FCCD-A995-4576-B01F-234630154E96} (value = my guid) I've also tried using the Win SDK sample, and that doesn't work. And also the sample project in this article (http://www.codemonkeycodes.com/2010/01/11/ithumbnailprovider-re-visited/), and that doesn't work. I'm new to shell programming, so not really sure the best way of debugging this. I've tried attaching the debugger to explorer.exe, but that doesn't seem to work (breakpoints get disabled, and none of my OutputDebugStrings get displayed in the output window). Note that I tried setting the "DesktopProcess" in the registry as described in the WinSDK docs for debugging the shell, but I'm still only seeing one explorer.exe in the task manager - so that "may" be why I can't debug it?? Any help with this would be greatly appreciated! Regards, Dan.

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• I just don't get AudioFileReadPackets

  - by Eric Christensen

  I've tried to write the smallest chunk of code to narrow down a problem. It's now just a few lines and it doesn't work, which makes it pretty clear that I have a fundamental misunderstanding of how to use AudioFileReadPackets. I've read the docs and other examples online, and apparently I'm just not getting. Could you explain it to me? Here's what this block should do: I've previously opened a file. I want to read just one packet - the first one of the file - and then print it. But it crashes on the AudioFileReadPackets line: AudioFileID mAudioFile2; AudioFileOpenURL (audioFileURL, 0x01, 0, &mAudioFile2); UInt32 *audioData2 = (UInt32 *)malloc(sizeof(UInt32) * 1); AudioFileReadPackets(mAudioFile2, false, NULL, NULL, 0, (UInt32*)1, audioData2); NSLog(@"first packet:%i",audioData2[0]); (For clarity, I've stripped out all error handling.) It's the AFRP line that crashes out. (I understand that the third and fourth argument are useful, and in my "real" code, I use them, but they're not required, right? So NULL in this case should work, right?) So then what's going on? Any guidance would be much appreciated. Thanks.

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• Strange behavior due to wx.Frame.SetTitle

  - by Anurag Uniyal

  In a wxPython application, which i am porting to Mac OSX, I set title of app frame every 500msec in update UI event, and due to that all the panels and windows are refreshed. That seems strange to me and almost halts my application which has many custom drawn controls and screens. I wanted to know what could be the reason behind it, is it normal for MAC? Here is a self-constrained script which replicates the scenario using timers. It keeps on printing "on paint" every 500ms because in timer I set title every 500ms. import wx app = wx.PySimpleApp() frame = wx.Frame(None, title="BasePainter Test") painter = wx.Panel(frame) def onPaint(event): dc = wx.PaintDC(painter) print "onPaint" painter.Bind(wx.EVT_PAINT, onPaint) def loop(): frame.SetTitle(frame.GetTitle()) wx.CallLater(500, loop) loop() frame.Show(True) app.SetTopWindow(frame) app.MainLoop() My system details: >>> sys.version '2.5 (r25:51918, Sep 19 2006, 08:49:13) \n[GCC 4.0.1 (Apple Computer, Inc. build 5341)]' >>> wx.VERSION (2, 8, 10, 1, '') >>> os.uname() ('Darwin', 'agyeys-mac-mini.local', '9.8.0', 'Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386', 'i386')

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• function's return address is different from its supposed value, buffer overflow,

  - by ultrajohn

  Good day everyone! I’m trying to understand how buffer overflow works. I’m doing this for my project in a computer security course I’m taking. Right now, I’m in the process of determining the address of the function’s return address which I’m supposed to change to perform a buffer overflow attack. I’ve written a simple program based from an example I’ve read in the internet. What this program does is it creates an integer pointer that will be made to point to the address of the function return address in the stack. To do this, (granted I understand how a function/program variables get organized in the stack), I add 8 to the buffer variable’ address and set it as the value of ret. I’m not doing anything here that would change the address contained in the location of func’s return address. here's the program: Output of the program when gets excecuted: As you can see, I’m printing the address of the variables buffer and ret. I’ve added an additional statement printing the value of the ret variable (supposed location of func return address, so this should print the address of the next instruction which will get executed after func returns from execution). Here is the dump which shows the supposed address of the instruction to be executed after func returns. (Underlined in green) As you can see, that value is way different from the value printed contained in the variable ret. My question is, why are they different? (of course in the assumption that what I’ve done are all right). Else, what have I done wrong? Is my understanding of the program’s runtime stack wrong? Please, help me understand this. My project is due nextweek and I’ve barely touched it yet. I’m sorry if I’m being demanding, I badly need your help.

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• Help with dynamic-wind and call/cc

  - by josh

  I am having some trouble understanding the behavior of the following Scheme program: (define c (dynamic-wind (lambda () (display 'IN)(newline)) (lambda () (call/cc (lambda (k) (display 'X)(newline) k))) (lambda () (display 'OUT)(newline)))) As I understand, c will be bound to the continution created right before "(display 'X)". But using c seems to modify itself! The define above prints (as I expected) IN, X and OUT: IN X OUT And it is a procedure: #;2> c #<procedure (a9869 . results1678)> Now, I would expect that when it is called again, X would be printed, and it is not! #;3> (c) IN OUT And now c is not a procedure anymore, and a second invokation of c won't work! #;4> c ;; the REPL doesn't answer this, so there are no values returned #;5> (c) Error: call of non-procedure: #<unspecified> Call history: <syntax> (c) <eval> (c) <-- I was expecting that each invokation to (c) would do the same thing -- print IN, X, and OUT. What am I missing?

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• How do I log from inside my web application in Tomcat 6.

  - by Carlos

  How do I log from within my web application deployed on Tomcat 6? Where should I expect the logging output to go (internal tomcat log files, or will another logfile be generated)? I see a ton of documentation but am having a hard time finding a direct answer to the above questions. Where should I expect the logging to show up (currently it is log4j is not generating a log file and it is not showing up in my console). I am trying to follow http://www.laliluna.de/articles/log4j-tutorial.html . ### direct log messages to stdout ### log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n ### file appender log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.maxFileSize=100KB log4j.appender.file.maxBackupIndex=5 log4j.appender.file.File=test.log log4j.appender.file.threshold=info log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n log4j.rootLogger=debug, stdout In my application I define a log object: private static org.apache.log4j.Logger log = Logger.getLogger(MyClass.class); log.error("LOGGING!"); Thanks for the help.

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• ocunit testing on iPhone

  - by Magnus Poromaa

  Hi I am trying to get ocunit working in my project from XCode. Since I also need to debug in the unit tests I am using a script that automates the setup (see below). I just include it in the project under resources and change the name to the .ocunit file I want it to run. The problem I get is that it cant find the bundle file and therefore exists with an error. Can anyone who has a clue about XCode and objective-c take a look at it and tell me what is wrong. Also how am I supposed to produce the .ocunit file that I need to run. By setting up a new unit test target for the iPhone and add tests to it or? Hope someone has a clue since I just started ny iPhone development and need to get it up and running quickly Apple Script -- The only customized value we need is the name of the test bundle tell me to activate tell application "Xcode" activate set thisProject to project of active project document tell thisProject set testBundleName to name of active target set unitTestExecutable to make new executable at end of executables set name of unitTestExecutable to testBundleName set path of unitTestExecutable to "/Applications/TextEdit.app" tell unitTestExecutable -- Add a "-SenTest All" argument make new launch argument with properties {active:true, name:"-SenTest All"} -- Add the magic set injectValue to "$(BUILT_PRODUCTS_DIR)/" & testBundleName & ".octest" make new environment variable with properties {active:true, name:"XCInjectBundle", value:injectValue} make new environment variable with properties {active:true, name:"XCInjectBundleInto", value:"/Applications/TextEdit.app/Contents/MacOS/TextEdit"} make new environment variable with properties {active:true, name:"DYLD_INSERT_LIBRARIES", value:"$(DEVELOPER_LIBRARY_DIR)/PrivateFrameworks/DevToolsBundleInjection.framework/DevToolsBundleInjection"} make new environment variable with properties {active:true, name:"DYLD_FALLBACK_FRAMEWORK_PATH", value:"$(DEVELOPER_LIBRARY_DIR)/Frameworks"} end tell end tell end tell Cheers Magnus

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• validation properties by attribute

  - by netmajor

  I create class with two property - name,link(below). I use simple property validation by Required and StringLength attribute. I bind this class object to WPF ListBox(with textBoxs). But when I have textbox empty or write words longer than 8 sign nothing happens :/ What should I do to fires ErrorMessage? Or how to implement validation in other way ? I also try use : if (value is int) { throw new ArgumentException("Wpisales stringa!!"); } But it only fires in debug mode :/ My class with implementation of attribute validation: public class RssInfo : INotifyPropertyChanged { public RssInfo() { } public RssInfo(string _nazwa, string _link) { nazwa = _nazwa; link = _link; } private string nazwa; [Required(ErrorMessage = "To pole jest obowiazkowe nAZWA")] public string Nazwa { get { return nazwa; } set { if (value != nazwa) { nazwa = value; onPropertyChanged("Nazwa"); } if (value is int) { throw new ArgumentException("Wpisales stringa!!"); } } } private string link; [Required(ErrorMessage="To pole jest obowiazkowe link")] [StringLength(8, ErrorMessage = "Link cannot be longer than 8 characters")] public string Link { get { return link; } set { if (value != link) { link = value; onPropertyChanged("Link"); } } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion private void onPropertyChanged(string propertyName) { if (this.PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } }

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• PHP mysqli Insert not working, but not giving any errors.

  - by asdasdas

  As the title says Im trying to do a simple insert, but nothing actually is inserted into the table. I try to print out errors, but nothing is reported. My users table has many more fields than these 4, but they should all default. $query = 'INSERT INTO users (username, password, level, name) VALUES (?, ?, ?, ?)'; if($stmt = $db -> prepare($query)) { $stmt -> bind_param('ssis', $username, $password, $newlevel, $realname); $stmt -> execute(); $stmt -> close(); echo 'Any Errors: '.$db->error.PHP_EOL; } There are no errors given, but when I go to look at the table in phpmyadmin there is not a new row added. I know for sure that the types are correct (strings and integers). Is there something really wrong here or does it have something to do with the fact that I'm ignoring other columns. I have about 8 columns in the user table.

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• rails + sheevaplug = rails home development server and more

  - by microspino

  Hello I'd like to build a "Rails Brick" using a Sheevaplug from Marvell (O.S. is Ubuntu out of the box but You can install other distributions on It). It will be a home server and a silent, low cost (99$) low energy development machine. I'd like to add rails RVM, lot of gems, git-based heroku like deployment, passenger + nginx. This way I could have a portable server with a complete development environment and maybe I could find a hosting company where I can co-locate a grid of this devices or I can sell It as a simple little server for 10 or less users offices, with some centralized rails services (I think to a CMS, a BLOG, a WIKI, calendar or whatever this little jewel could afford). The usb port could make It a print server too or a UMTS link to the web via HUAWEI like usb UMTS keys. Can you give me some hint about: Is this project a crazy-close-to-failure idea? Why? which gem would You include? which rails open source app would you suggest? I have already an Excito Bubba Server at home, I saw the TonidoPlug so It came up in my mind to build something similiar but Rails based (Bubba is PHP based, TonidoPlug I don't know but It does not seems a Rails thing).

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• WPF binding fails with custom add and remove accessors for INotifyPropertyChanged.PropertyChanged

  - by emddudley

  I have a scenario which is causing strange behavior with WPF data binding and INotifyPropertyChanged. I want a private member of the data binding source to handle the INotifyPropertyChanged.PropertyChanged event. I get some exceptions which haven't helped me debug, even when I have "Enable .NET Framework source stepping" checked in Visual Studio's options: A first chance exception of type 'System.ArgumentException' occurred in mscorlib.dll A first chance exception of type 'System.ArgumentException' occurred in mscorlib.dll A first chance exception of type 'System.InvalidOperationException' occurred in PresentationCore.dll Here's the source code: XAML <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="TestApplication.MainWindow" DataContext="{Binding RelativeSource={RelativeSource Self}}" Height="100" Width="100"> <StackPanel> <CheckBox IsChecked="{Binding Path=CheckboxIsChecked}" Content="A" /> <CheckBox IsChecked="{Binding Path=CheckboxIsChecked}" Content="B" /> </StackPanel> </Window> Normal implementation works public partial class MainWindow : Window, INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public bool CheckboxIsChecked { get { return this.mCheckboxIsChecked; } set { this.mCheckboxIsChecked = value; PropertyChangedEventHandler handler = this.PropertyChanged; if (handler != null) handler(this, new PropertyChangedEventArgs("CheckboxIsChecked")); } } private bool mCheckboxIsChecked = false; public MainWindow() { InitializeComponent(); } } Desired implementation doesn't work public partial class MainWindow : Window, INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged { add { lock (this.mHandler) { this.mHandler.PropertyChanged += value; } } remove { lock (this.mHandler) { this.mHandler.PropertyChanged -= value; } } } public bool CheckboxIsChecked { get { return this.mHandler.CheckboxIsChecked; } set { this.mHandler.CheckboxIsChecked = value; } } private HandlesPropertyChangeEvents mHandler = new HandlesPropertyChangeEvents(); public MainWindow() { InitializeComponent(); } public class HandlesPropertyChangeEvents : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public bool CheckboxIsChecked { get { return this.mCheckboxIsChecked; } set { this.mCheckboxIsChecked = value; PropertyChangedEventHandler handler = this.PropertyChanged; if (handler != null) handler(this, new PropertyChangedEventArgs("CheckboxIsChecked")); } } private bool mCheckboxIsChecked = false; } }

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• Heuristic to identify if a series of 4 bytes chunks of data are integers or floats

  - by flint

  What's the best heuristic I can use to identify whether a chunk of X 4-bytes are integers or floats? A human can do this easily, but I wanted to do it programmatically. I realize that since every combination of bits will result in a valid integer and (almost?) all of them will also result in a valid float, there is no way to know for sure. But I still would like to identify the most likely candidate (which will virtually always be correct; or at least, a human can do it). For example, let's take a series of 4-bytes raw data and print them as integers first and then as floats: 1 1.4013e-45 10 1.4013e-44 44 6.16571e-44 5000 7.00649e-42 1024 1.43493e-42 0 0 0 0 -5 -nan 11 1.54143e-44 Obviously they will be integers. Now, another example: 1065353216 1 1084227584 5 1085276160 5.5 1068149391 1.33333 1083179008 4.5 1120403456 100 0 0 -1110651699 -0.1 1195593728 50000 These will obviously be floats. PS: I'm using C++ but you can answer in any language, pseudo code or just in english.

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• User roles - why not store in session?

  - by Phil

  I'm porting an ASP.NET application to MVC and need to store two items relating to an authenitcated user: a list of roles and a list of visible item IDs, to determine what the user can or cannot see. We've used WSE with a web service in the past and this made things unbelievably complex and impossible to debug properly. Now we're ditching the web service I was looking foward to drastically simplifying the solution simply to store these things in the session. A colleague suggested using the roles and membership providers but on looking into this I've found a number of problems: a) It suffers from similar but different problems to WSE in that it has to be used in a very constrained way maing it tricky even to write tests; b) The only caching option for the RolesProvider is based on cookies which we've rejected on security grounds; c) It introduces no end of complications and extra unwanted baggage; All we want to do, in a nutshell, is store two string variables in a user's session or something equivalent in a secure way and refer to them when we need to. What seems to be a ten minute job has so far taken several days of investigation and to compound the problem we have now discovered that session IDs can apparently be faked, see http://blogs.sans.org/appsecstreetfighter/2009/06/14/session-attacks-and-aspnet-part-1/ I'm left thinking there is no easy way to do this very simple job, but I find that impossible to believe. Could anyone: a) provide simple information on how to make ASP.NET MVC sessions secure as I always believed they were? b) suggest another simple way to store these two string variables for a logged in user's roles etc. without having to replace one complex nightmare with another as described above? Thank you.

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• How do I use an SWT Control to render the content of an SWT/JFace table?

  - by jastram

  I have a JFace TableViewer with an SWT Table, and I would like to custom render the content of some cells. I would like to use an SWT Control to render the cell content. I would prefer to have only one instance of the Control doing the rendering, but if I have to instantiate one for each row, that would be acceptable. Next, the solution MUST be compatible with the ContentProvider/LabelProvider approach (I am using EMF). This means that I cannot use the solution described in Sniplet 126 (http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets). Next, I though about using custom drawing. But here the catch is, that I have to send individual drawing operations to the graphics context. I was trying to have the Control render the content for me by calling redraw() or print(GC) upon SWT.PaintItem, but that just lead to uncontrollable flickering. At this point, my best guess is to use SWT.PaintItem to do the drawing. This will result in duplicate code, as I already have a Control that can render the content the way I'd like it. I'd like to prevent this redundancy. Any help is appreciated!

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• Is SQLDataReader slower than using the command line utility sqlcmd?

  - by Andrew

  I was recently advocating to a colleague that we replace some C# code that uses the sqlcmd command line utility with a SqlDataReader. The old code uses: System.Diagnostics.ProcessStartInfo procStartInfo = new System.Diagnostics.ProcessStartInfo("cmd", "/c " + sqlCmd); wher sqlCmd is something like "sqlcmd -S " + serverName + " -y 0 -h-1 -Q " + "\"" + "USE [" + database + "]" + ";+ txtQuery.Text +"\"";\ The results are then parsed using regular expressions. I argued that using a SQLDataReader woud be more in line with industry practices, easier to debug and maintain and probably faster. However, the SQLDataReader approach is at least the same speed and quite possibly slower. I believe I'm doing everything correctly with SQLDataReader. The code is: using (SqlConnection connection = new SqlConnection()) { try { SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(connectionString); connection.ConnectionString = builder.ToString(); ; SqlCommand command = new SqlCommand(queryString, connection); connection.Open(); SqlDataReader reader = command.ExecuteReader(); // do stuff w/ reader reader.Close(); } catch (Exception ex) { outputMessage += (ex.Message); } } I've used System.Diagnostics.Stopwatch to time both approaches and the command line utility (called from C# code) does seem faster (20-40%?). The SqlDataReader has the neat feature that when the same code is called again, it's lightening fast, but for this application we don't anticipate that. I have already done some research on this problem. I note that the command line utility sqlcmd uses OLE DB technology to hit the database. Is that faster than ADO.NET? I'm really suprised, especially since the command line utility approach involves starting up a process. I really thought it would be slower. Any thoughts? Thanks, Dave

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• Treeview does not refresh to show childnode moved from one parent node to another

  - by mike

  I am using the Windows Forms TreeView class which contains a set of TreeNodes. The TreeNodes can have child nodes. I have a root node with 2 sub nodes (Node1 and Node2) Node1 has 2 subnodes (child1 and child2) I have a function that will allow a user to select any node and move it to another node: TreeNode SelectNode = this.TreeView1.SelectedNode; TreeNode DestNode = SelectedNewNode(); //function to select a new node SelectedNode.Remove(); DestNode.Nodes.Add(SelectedNode); this.TreeView1.Refresh(); When this executes, the current selected node (child2) is removed from its current parent (Node1) and added to Node2. However, the Refresh() method of the TreeView control does not show that child2 is under Node2. If I debug it and look at the Nodes collection in the TreeView i do see that child2 is under Node2. Can anyone tell me why the Refresh() method does not redraw the new parent to child mapping? Is there a way to tell the TreeView to redraw with the new mappings?

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