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• Merging changes to a workspace with uncommitted changes

  - by Kim L

  We've just recently switched over from SVN to Mercurial, but now we are running into problems with our workflow. Example I have my local clone of the repository which I work on. I'm making some highly experimental changes to our code base, something that I don't want to commit before I'm sure it works the way it is supposed to, I don't want to commit it even locally. Now, simultaneously, my co-worker has made some significant improvements/bug fixes which I need. He pushes his commits to our main repository. The question is, how can I merge his changes to my workspace without the requirement that I have to commit all my changes, since I need his changes to test my own code? A more day-to-day problem we have with the exact same workflow is where we have a couple of configuration files which are in the repository. Each developer makes a couple of small environment specific changes to the configuration files, but do not commit the changes. These couple of uncommitted files hinders us from making any merges to our workspace, just like with the example above. Ideally, the configuration files probably shouldn't be in the repository, unfortunately, that's just how it has to be for here unnamed reasons.

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• Fatal error when using FILE* in Windows from DLL

  - by AlannY

  Hi there. Recently, I found a problem with Visual C++ 2008 compiler, but using minor hack avoid it. Currently, I cannot use the same hack, but problem exists as in 2008 as in 2010 (Express). So, I've prepared for you 2 simple C file: one for DLL, one for program: DLL (file-dll.c): #include <stdio.h> __declspec(dllexport) void print_to_stream (FILE *stream) { fprintf (stream, "OK!\n"); } And for program, which links this DLL via file-dll.lib: Program: #include <stdio.h> __declspec(dllimport) void print_to_stream (FILE *stream); int main (void) { print_to_stream (stdout); return 0; } To compile and link DLL: cl /LD file-dll.c To compile and link program: cl file-test.c file-dll.lib When invoking file-test.exe, I got the fatal error (similar to segmentation fault in UNIX). As I said early, I had that the same problem before: about transferring FILE* pointer to DLL. I thought, that it may be because of compiler mismatch, but now I'm using one compiler for everything and it's not the problem. ;-( What can I do now? UPD: I've found solution: cl /LD /MD file-dll.c cl /MD file-test.c file-dll.lib The key is to link to dynamic library, but (I did not know it) by default it links staticaly and (hencefore) error occurs (I see why). P.S. Thanks for patience.

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• Syntax Error in MySql StoredProc

  - by karthik

  I am using the below stored proc in mysql to generate the insert statements. I am getting the following error : Script line: 4 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\’”\’,',’ifnull(‘,column_name,’,””)’,',\’”\’)')) INTO @S' at line 12 What would be the syntax problem in that ? DELIMITER $$ DROP PROCEDURE IF EXISTS `InsGen` $$ CREATE DEFINER=`root`@`localhost` PROCEDURE `InsGen`(in_db varchar(20),in_table varchar(20),in_file varchar(100)) BEGIN declare Whrs varchar(500); declare Sels varchar(500); declare Inserts varchar(2000); declare tablename varchar(20); set tablename=in_table; select tablename; # Comma separated column names – used for Select select group_concat(concat(‘concat(\’”\’,',’ifnull(‘,column_name,’,””)’,',\’”\’)')) INTO @Sels from information_schema.columns where table_schema=’test’ and table_name=tablename; # Comma separated column names – used for Group By select group_concat(‘`’,column_name,’`') INTO @Whrs from information_schema.columns where table_schema=’test’ and table_name=tablename; #Main Select Statement for fetching comma separated table values set @Inserts=concat(“select concat(‘insert into “, in_db,”.”,tablename,” values(‘,concat_ws(‘,’,”,@Sels,”),’);’) from “, in_db,”.”,tablename,” group by “,@Whrs, ” INTO OUTFILE ‘”, in_file ,”‘”); PREPARE Inserts FROM @Inserts; EXECUTE Inserts; END $$ DELIMITER ;

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• How to log correct context with Threadpool threads using log4net?

  - by myotherme

  I am trying to find a way to log useful context from a bunch of threads. The problem is that a lot of code is dealt with on Events that are arriving via threadpool threads (as far as I can tell) so their names are not in relation to any context. The problem can be demonstrated with the following code: class Program { private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); static void Main(string[] args) { new Thread(TestThis).Start("ThreadA"); new Thread(TestThis).Start("ThreadB"); Console.ReadLine(); } private static void TestThis(object name) { var nameStr = (string)name; Thread.CurrentThread.Name = nameStr; log4net.ThreadContext.Properties["ThreadContext"] = nameStr; log4net.LogicalThreadContext.Properties["LogicalThreadContext"] = nameStr; log.Debug("From Thread itself"); ThreadPool.QueueUserWorkItem(x => log.Debug("From threadpool Thread: " + nameStr)); } } The Conversion pattern is: %date [%thread] %-5level %logger [%property] - %message%newline The output is like so: 2010-05-21 15:08:02,357 [ThreadA] DEBUG LogicalContextTest.Program [{LogicalThreadContext=ThreadA, log4net:HostName=xxx, ThreadContext=ThreadA}] - From Thread itself 2010-05-21 15:08:02,357 [ThreadB] DEBUG LogicalContextTest.Program [{LogicalThreadContext=ThreadB, log4net:HostName=xxx, ThreadContext=ThreadB}] - From Thread itself 2010-05-21 15:08:02,404 [7] DEBUG LogicalContextTest.Program [{log4net:HostName=xxx}] - From threadpool Thread: ThreadA 2010-05-21 15:08:02,420 [16] DEBUG LogicalContextTest.Program [{log4net:HostName=xxx}] - From threadpool Thread: ThreadB As you can see the last two rows have no Names of useful information to distinguish the 2 threads, other than manually adding the name to the message (which I want to avoid). How can I get the Name/Context into the log for the threadpool threads without adding it to the message at every call?

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• How do php apps identify a user after the session has timed out?

  - by Bill Zimmerman

  I am trying to understand how PHP apps check to see if a user is logged in. I am specifically looking at mediawiki's code to try to help me understand, but these cases should be fairly common in all php apps. From what I gather, the main cases are: A user just logged in or was created, every time they visit the page PHP knows its them by checking data common to the $_SESSION variable and the cookie. A user had the 'remember me' option checked on the login page a long time ago. They have a cookie on there computer with a tokenID, which is checked with a token on the server to authenticate them. In this case, there is no session variable, because the time between accesses could be weeks. My question is, what happens when a user is logged in, but the PHP session times out and he wants to access a page? I would have assumed that there is no easy way for the server to know who the person is - and that they would have to be redirected to the login page. However, mediawiki does just that. I've verified that the session files are deleted after X minutes, but when I hit refresh in mediawiki, it knows which user I am, and the 'token' variable is not included in the cookie.

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• Qt Jambi: Accessing the content of QNetworkReply

  - by Richard

  Hi All, I'm having trouble accessing the content of QNetworkReply objects. Content appears to be empty or zero. According to the docs (translating from c++ to java) I think I've got this set up correctly, but to no avail. Additionally an "Unknown error" is being reported. Any ideas much appreciated. Code: public class Test extends QObject { private QWebPage page; public Test() { page = new QWebPage(); QNetworkAccessManager nac = new QNetworkAccessManager(); nac.finished.connect(this, "requestFinished(QNetworkReply)"); page.setNetworkAccessManager(nac); page.loadProgress.connect(this, "loadProgress(int)"); page.loadFinished.connect(this, "loadFinished()"); } public void requestFinished(QNetworkReply reply) { reply.reset(); reply.open(OpenModeFlag.ReadOnly); reply.readyRead.connect(this, "ready()"); // never gets called System.out.println("bytes: " + reply.url().toString()); // writes out asset uri no problem System.out.println("bytes: " + reply.bytesToWrite()); // 0 System.out.println("At end: " + reply.atEnd()); // true System.out.println("Error: " + reply.errorString()); // "Unknown error" } public void loadProgress(int progress) { System.out.println("Loaded " + progress + "%"); } public void loadFinished() { System.out.println("Done"); } public void ready() { System.out.println("Ready"); } public void open(String url) { page.mainFrame().load(new QUrl(url)); } public static void main(String[] args) { QApplication.initialize(new String[] { }); Test t = new Test(); t.open("http://news.bbc.co.uk"); QApplication.exec(); } }

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• Web Servicet Client in JBOSS 5.1 with JDK6

  - by dcp

  This is a continuation of the question here: http://stackoverflow.com/questions/2435286/jboss-does-app-have-to-be-compiled-under-same-jdk-as-jboss-is-running-under It's different enough though that it required a new question. I am trying to use jdk6 to run JBOSS 5.1, and I downloaded the JDK6 version of JBOSS 5.1. This works fine and my EAR application deploys fine. However, when I want to run a web service client with code like this: public static void main(String[] args) throws Exception { System.out.println("creating the web service client..."); TestClient client = new TestClient("http://localhost:8080/tc_test_project-tc_test_project/TestBean?wsdl"); Test service = client.getTestPort(); System.out.println("calling service.retrieveAll() using the service client"); List<TestEntity> list = service.retrieveAll(); System.out.println("the number of elements in list retrieved using the client is " + list.size()); } I get the following exception: javax.xml.ws.WebServiceException: java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage at org.jboss.ws.core.jaxws.client.ClientImpl.handleRemoteException(ClientImpl.java:396) at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:302) at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:170) at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150) Now, here's the really interesting part. If I change the JDK that my the code above is running under from JDK6 to JDK5, the exception above goes away! It's really strange. The only way I found for the code above to run under JDK6 was to take the JBOSS_HOME/lib/endorsed folder and copy it to JDK6_HOME/lib. This seems like it shouldn't be necessary, but it is. Is there any other way to make this work other than using the workaround I just described?

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• WCF contracts - namespaces and SerializationExceptions

  - by qntmfred

  I am using a third party web service that offers the following calls and responses http://api.athirdparty.com/rest/foo?apikey=1234 <response> <foo>this is a foo</foo> </response> and http://api.athirdparty.com/rest/bar?apikey=1234 <response> <bar>this is a bar</bar> </response> This is the contract and supporting types I wrote [ServiceContract] [XmlSerializerFormat] public interface IFooBarService { [OperationContract] [WebGet( BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Xml, UriTemplate = "foo?key={apikey}")] FooResponse GetFoo(string apikey); [OperationContract] [WebGet( BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Xml, UriTemplate = "bar?key={apikey}")] BarResponse GetBar(string apikey); } [XmlRoot("response")] public class FooResponse { [XmlElement("foo")] public string Foo { get; set; } } [XmlRoot("response")] public class BarResponse { [XmlElement("bar")] public string Bar { get; set; } } and then my client looks like this static void Main(string[] args) { using (WebChannelFactory<IFooBarService> cf = new WebChannelFactory<IFooBarService>("thirdparty")) { var channel = cf.CreateChannel(); FooResponse result = channel.GetFoo("1234"); } } When I run this I get the following exception Unable to deserialize XML body with root name 'response' and root namespace '' (for operation 'GetFoo' and contract ('IFooBarService', 'http://tempuri.org/')) using XmlSerializer. Ensure that the type corresponding to the XML is added to the known types collection of the service. If I comment out the GetBar operation from IFooBarService, it works fine. I know I'm missing an important concept here - just don't know quite what to look for. What is the proper way to construct my contract types, so that they can be properly deserialized?

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• Letter placement error with GD2, TTF and PHP

  - by Javier Parra

  Some time ago I made a script that takes some text and returns it as an image, and worked flawlessly. But I'm not sure since when a weird bug started to happen. The letters that have a (my apologies to the font geeks) "glyph" on the left get pushed to the right so the letter starts on it, but leaves space only for the main letter, hehe, I think an example should do it. The expected result is: The "bad" one was generated, obviously, by my script, located here: http://www.esbasura.com/images/text.php?txt=The%20quick%20brown%20fox%20jumps%20over%20the%20lazy%20dog.&fnt=1&size=23&bg=lightgrey And the good one was generated by dafont here: http://img.dafont.com/preview.php?text=The%20quick%20brown%20fox%20jumps%20over%20the%20lazy%20dog.&ttf=bleeding_cowboys0&ext=1&size=23&psize=m&y=46 I'm not doing anything fancy in the script, here is the relevant part: imagefilledrectangle($im, 0, 0, $width, $height, $$bg); imagettftext($im, $size, 0, (-1*$textsize[6]), (-1*$textsize[7]), $$color, $font, $text); // imagefttext($im, $size, 0, (-1*$textsize[6]), (-1*$textsize[7]), $$color, $font, $text); same results using imagefttext imagecolortransparent($im, $$bg); header("Cache-Control: public"); // HTTP/1.1 header("Content-type: image/png"); imagepng($im); imagedestroy($im); } I'm kind of surprised, because, as I said, it used to work flawlessly. Maybe my host changed my machine. (here's my phpinfo: http://www.work4bandwidth.com/info.php) Relevant bit: gd GD Support enabled GD Version bundled (2.0.34 compatible) FreeType Support enabled FreeType Linkage with freetype FreeType Version 2.2.1 GIF Read Support enabled GIF Create Support enabled JPG Support enabled PNG Support enabled WBMP Support enabled XBM Support enabled

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• How do I programmatically create a bootable CD?

  - by Nicholas Flynt

  I'm using a barebones tutorial as the basis for an OS I'm working on, and it seems to be an older tutorial: it has be compiling the kernel down to a floppy image, and then loading it with GRUB. Basically, I still want to use GRUB, but I'd like to have my OS run from a CD instead. The main reason is that I don't actually have a real floppy drive available (I'm testing in VirtualBox currently) and I thus have no way to test my OS on real hardware. I've been poking around on the net, and I can find lots of utilities that create a bootable CD from a floppy image, but these all seem to require an actual floppy drive, plus it's not really what I'm looking for. I'd like to be able to end up with a bootable CD during my make step ideally, without needing to first place the image on a floppy, which seems rather pointless. I guess the easy way to answer this: How do I set up GRUB to read my kernel image from a CD? Will I need a special utility to do this from Windows? (The kernel can't compile itself yet, that's not for a looong while) Thanks!

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• Change in behaviour & generation of nullreference exception

  - by peril brain

  I made this program 2hr ago and it ran quit well when i confronted this to presaved .xls file. But when i closed that and started new instance,it started generating null refrence exception why??plz explain. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Threading; using Microsoft.Office.Interop; using Excel = Microsoft.Office.Interop.Excel; namespace svchost { class MainClass { Excel.Application oExcelApp; static void Main(string[] args) { MainClass mc = new MainClass(); while (true) { if (mc.chec()) { Console.WriteLine("RUNNING"); Thread.Sleep(4000); } else { Console.WriteLine("NOT RUNNING"); Thread.Sleep(8000); } } } public bool chec() { try { oExcelApp = (Excel.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application"); Excel.Workbook xlwkbook = (Excel.Workbook)oExcelApp.ActiveWorkbook; //****PROBLEM FROM HERE********* Console.WriteLine(xlwkbook.Name + "\n"); ke kw = new ke(ref oExcelApp,ref xlwkbook); Console.WriteLine(xlwkbook.Author); xlwkbook = null; } catch (Exception ec) { oExcelApp = null; System.GC.Collect(); Console.WriteLine(ec); return false; } oExcelApp = null; System.GC.Collect(); return true; } } class ke { public ke(ref Excel.Application a1, ref Excel.Workbook b1) { Excel.Worksheet ws = (Excel.Worksheet)a1.ActiveSheet; Console.WriteLine(a1.ActiveWorkbook.Name + "\n" + ws.Name); Excel.Range rn; rn = ws.Cells.Find("657/07", Type.Missing, Excel.XlFindLookIn.xlValues, Excel.XlLookAt.xlPart, Excel.XlSearchOrder.xlByRows, Excel.XlSearchDirection.xlNext, false, Type.Missing, Type.Missing); Console.WriteLine(rn.Text); } } }

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• UINavigationController flashes white when I add it to a superview

  - by Chris Stamper

  Hey guys, I'm adding a NavigationController as a subview of my main view, with the flip animation (like a utility app/flipview thing). Here's how I'm doing it: [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:.7]; [UIView setAnimationTransition:([self.tableController.view superview] ? UIViewAnimationTransitionFlipFromLeft : UIViewAnimationTransitionFlipFromRight) forView:self.tableHostView cache:YES]; [self.tableController.view removeFromSuperview]; settingsView* backView1 = [[settingsView alloc] initWithNibName:@"settingsView" bundle:nil]; backView1.delegate = self; UINavigationController* settingsNavStack = [[UINavigationController alloc]initWithRootViewController:backView1]; [backView1 release]; settingsNavStack.view.frame = CGRectMake(0, 0, 320, 460); settingsNavStack.navigationItem.title = @"Settings"; [self setBackView:settingsNavStack]; [settingsNavStack release]; [self.tableHostView addSubview:self.backView.view]; [[self backView]setDelegate: self]; When it loads, the view comes in very nicely. However, the navigation bar stays white until like .2 secs after the animation finishes. Anyone know why the navigation bar wouldn't display right away?

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• Django ModelForm is giving me a validation error that doesn't make sense

  - by River Tam

  I've got a ModelForm based on a Picture. class Picture(models.Model): name = models.CharField(max_length=100) pub_date = models.DateTimeField('date published') tags = models.ManyToManyField('Tag', blank=True) content = models.ImageField(upload_to='instaton') def __unicode__(self): return self.name class PictureForm(forms.ModelForm): class Meta: model = Picture exclude = ('pub_date','tags') That's the model and the ModelForm, of course. def submit(request): if request.method == 'POST': # if the form has been submitted form = PictureForm(request.POST) if form.is_valid(): return HttpResponseRedirect('/django/instaton') else: form = PictureForm() # blank form return render_to_response('instaton/submit.html', {'form': form}, context_instance=RequestContext(request)) That's the view (which is being correctly linked to by urls.py) Right now, I do nothing when the form submits. I just check to make sure it's valid. If it is, I forward to the main page of the app. <form action="/django/instaton/submit/" method="post"> {% csrf_token %} {{ form.as_p }} <input type="submit" value"Submit" /> </form> And there's my template (in the correct location). When I try to actually fill out the form and just validate it, even if I do so correctly, it sends me back to the form and says "This field is required" between Name and Content. I assume it's referring to Content, but I'm not sure. What's my problem? Is there a better way to do this?

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• MS Access Interop - How to set print filename?

  - by Ryan

  Hi all, I'm using Delphi 2009 and the MS Access Interop COM API. I'm trying to figure out two things, but one is more important than the other right now. I need to know how to set the file name when sending the print job to the spooler. Right now it's defaulting to the Access DB's name, which can be something different than the file's name. I need to just ensure that when this is printed it enters the print spool using the same filename as the actual file itself - not the DB's name. My printer spool is actually a virtual print driver that converts documents to an image. That's my main issue. The second issue is how to specify which printer to use. This is less important at the moment because I'm just using the default printer for now. It would be nice if I could specify the printer to use, though. Does anyone know either of these two issues? Thank you in advance. I'll go ahead and paste my code: unit Converter.Handlers.Office.Access; interface uses sysutils, variants, Converter.Printer, Office_TLB, Access_TLB, UDC_TLB; procedure ToTiff(p_Printer: PrinterDriver; p_InputFile, p_OutputFile: String); implementation procedure ToTiff(p_Printer: PrinterDriver; p_InputFile, p_OutputFile: String); var AccessApp : AccessApplication; begin AccessApp := CoAccessApplication.Create; AccessApp.Visible := False; try AccessApp.OpenCurrentDatabase(p_InputFile, True, ''); AccessApp.RunCommand(acCmdQuickPrint); AccessApp.CloseCurrentDatabase; finally AccessApp.Quit(acQuitSaveNone); end; end; end.

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• What would you like to correct and/or improve in this java implementation of Chain Of Responsibility

  - by Maciek Kreft

  package design.pattern.behavioral; import design.pattern.behavioral.ChainOfResponsibility.*; public class ChainOfResponsibility { public static class Chain { private Request[] requests = null; private Handler[] handlers = null; public Chain(Handler[] handlers, Request[] requests){ this.handlers = handlers; this.requests = requests; } public void start() { for(Request r : requests) for (Handler h : handlers) if(h.handle(r)) break; } } public static class Request { private int value; public Request setValue(int value){ this.value = value; return this; } public int getValue() { return value; } } public static class Handler<T1> { private Lambda<T1> lambda = null; private Lambda<T1> command = null; public Handler(Lambda<T1> condition, Lambda<T1> command) { this.lambda = condition; this.command = command; } public boolean handle(T1 request) { if (lambda.lambda(request)) command.lambda(request); return lambda.lambda(request); } } public static abstract class Lambda<T1>{ public abstract Boolean lambda(T1 request); } } class TestChainOfResponsibility { public static void main(String[] args) { new TestChainOfResponsibility().test(); } private void test() { new Chain(new Handler[]{ // chain of responsibility new Handler<Request>( new Lambda<Request>(){ // command public Boolean lambda(Request condition) { return condition.getValue() >= 600; } }, new Lambda<Request>(){ public Boolean lambda(Request command) { System.out.println("You are rich: " + command.getValue() + " (id: " + command.hashCode() + ")"); return true; } } ), new Handler<Request>( new Lambda<Request>(){ public Boolean lambda(Request condition) { return condition.getValue() >= 100; } }, new Lambda<Request>(){ public Boolean lambda(Request command) { System.out.println("You are poor: " + command.getValue() + " (id: " + command.hashCode() + ")"); return true; } } ), }, new Request[]{ new Request().setValue(600), // chaining method new Request().setValue(100), } ).start(); } }

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• C & MinGW: Hello World gives me the error "programm too big to fit in memory"

  - by user1692088

  I'm new here. Here's my problem: I installed MinGW on my Windows 7 Home Premium 32-bit Netbook with Intel Atom CPU N550, 1.50GHz and 2GB RAM. Now I made a file named hello.h and tried to compile it via CMD with the following command: "gcc c:\workspace\c\helloworld\hello.h -o out.exe" It compiles with no error, but when I try to run out.exe, it gives me following error: "program too big to fit in memory" Things I have checked: I have added "C:\MinGW\bin" to the Windows PATH Variable I have googled for about one hour, but ever since I'm a newbie, I can't really figure out what the problem is. I have compiled the same code on my 64-bit machine, compiles perfectly, but cannot be run due to 64-bit <- 16-bit problematic. I'd really appreciate, if someone could figure out, what the problem is. Btw, here's my hello.h: #include <stdio.h> int main(void){ printf("Hello, World\n"); } ... That's it. Thanks for your replies. Cheers, Boris

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• sqlite3_prepare_v2 throws SQLITE_ERROR in iPhone code

  - by incognitii

  I have a piece of code that used to work, and other iterations of it that DO work within the same app, and have compared code, and they are identical in structure. This is driving me INSANE!!!!!! In this instance, sqlite3_prepare_v2 is throwing one of those useless SQLITE_ERROR exceptions. Apparently, it can FIND the database, and OPEN the database, but it can't prepare a statement for it. Does ANYONE have any ideas? I'm desperate here. second_maindatabaseName = @"database.db"; NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDir = [documentPaths objectAtIndex:0]; second_maindatabasePath = [documentsDir stringByAppendingPathComponent:second_maindatabaseName]; // Setup the database object sqlite3 *database; // Init the entry requirements Array BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; success = [fileManager fileExistsAtPath:second_maindatabasePath]; if(!success) { NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:second_maindatabaseName]; [fileManager copyItemAtPath:databasePathFromApp toPath:second_maindatabasePath error:nil]; [fileManager release]; } if(sqlite3_open([second_maindatabasePath UTF8String], &database) == SQLITE_OK) { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; value1 = [defaults stringForKey:kConst1]; value2 = [defaults stringForKey:kConst2]; value3 = [defaults stringForKey:kConst3]; value4 = [defaults stringForKey:kConst4]; const char *sqlStatement = "SELECT * FROM myTable WHERE Field1 = ? AND Field2 = ? AND Field3 = ? AND Field4 = ?"; sqlite3_stmt *compiledStatement; int error_code = sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL); if(error_code == SQLITE_OK) { // Loop through the results and add them to the feeds array sqlite3_bind_text(compiledStatement,1,[value1 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,2,[value2 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,3,[value3 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,4,[value4 UTF8String],-1,SQLITE_TRANSIENT); while(sqlite3_step(compiledStatement) == SQLITE_ROW) { // Read the data from the result row NSString *aNewValue = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; } } sqlite3_finalize(compiledStatement); } sqlite3_close(database);

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• How do I fork a maximum of 5 child processes of the parent at any one time?

  - by bstullkid

  I have the following code, which I'm trying to only allow a maximum of 5 children to run at a time, but I can't figure out how to decrement the child count when a child exits. struct { char *s1; char *s2; } s[] = { {"one", "oneB"}, {"two", "twoB"}, {"three", "thr4eeB"}, {"asdf", "3th43reeB"}, {"asdfasdf", "thr33eeB"}, {"asdfasdfasdf", "thdfdreeB"}, {"af3c3", "thrasdfeeB"}, {"fec33", "threfdeB"}, {NULL, NULL} }; int main(int argc, char *argv[]) { int i, im5, children = 0; int pid = fork(); for (i = 0; s[i].s2; i++) { im5 = 0; switch (pid) { case -1: { printf("Error\n"); exit(255); } case 0: { printf("%s -> %s\n", s[i].s1, s[i].s2); if (i==5) im5 = 1; printf("%d\n", im5); sleep(i); exit(1); } default: { // Here is where I need to sleep the parent until chilren < 5 // so where do i decrement children so that it gets modified in the parent process? while(children > 5) sleep(1); children++; pid = fork(); } } } return 1; }

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• Xlib mouse events and ButtonPressMask

  - by Trilly Campanelino

  I have written a simple program which will report key press and release events for a particular window. In my case, it is mostly the terminal since I invoke the program from the terminal. I am able to get the key press and release events taking place in the terminal window (I have used XSelectInput() with KeyPressMask and KeyReleaseMask on the terminal) but the same is not working with ButtonPress and ButtonRelease. Not just these, but any events related to the mouse are not being reported. Any idea why this is happening? #include #include #include #include #include #include int main() { Display *display = XOpenDisplay(NULL); KeySym k; int revert_to; Window window; XEvent event; XGetInputFocus(display, &window, &revert_to); XSelectInput(display, window, KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask); while(1) { XNextEvent(display,&event); switch (event.type) { case KeyPress : printf("Key Pressed\n"); break; case KeyRelease : printf("Key Released\n"); break; case ButtonPress : printf("Button Pressed\n"); break; case ButtonRelease : printf("Button Released\n"); break; case EnterNotify : printf("Enter\n"); break; } } XCloseDisplay(display); return 0; }

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• Creating ListView with check boxes...Android

  - by deewangan

  Hello, I am trying to create a listview that has check box beside each item. (i am following a code from the book android), but i can't get it to work, every time i run it, it crashes. since i am very new to this android staff, i have no clue what to do to get it to work, any help is appreciated.the code is below. *i have created two layout files in names of list and list_item. the code for the main activity: public class ListDemoActivity extends ListActivity { /** Called when the activity is first created. */ String[] listItems = {"exploring", "android","list", "activities"}; private SimpleCursorAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.lists); //setListAdapter(new ArrayAdapter(this,android.R.layout.simple_list_item_1, listItems)); //setContentView(R.layout.lists); Cursor c = getContentResolver().query(People.CONTENT_URI, null, null, null, null); startManagingCursor(c); String[] cols = new String[]{People.NAME}; int[] names = new int[]{R.id.row_tv}; adapter = new SimpleCursorAdapter(this,R.layout.list_item,c,cols,names); this.setListAdapter(adapter); } } the lists file content: <?xml version="1.0" encoding="utf-8"?> and the list_item file content: <?xml version="1.0" encoding="utf-8"?>

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• Binding a date string parameter in an MS Access PDO query

  - by harryg

  I've made a PDO database class which I use to run queries on an MS Access database. When querying using a date condition, as is common in SQL, dates are passed as a string. Access usually expects the date to be surrounded in hashes however. E.g. SELECT transactions.amount FROM transactions WHERE transactions.date = #2013-05-25#; If I where to run this query using PDO I might do the following. //instatiate pdo connection etc... resulting in a $db object $stmt = $db->prepare('SELECT transactions.amount FROM transactions WHERE transactions.date = #:mydate#;'); //prepare the query $stmt->bindValue('mydate', '2013-05-25', PDO::PARAM_STR); //bind the date as a string $stmt->execute(); //run it $result = $stmt->fetch(); //get the results As far as my understanding goes the statement that results from the above would look like this as binding a string results in it being surrounded by quotes: SELECT transactions.amount FROM transactions WHERE transactions.date = #'2013-05-25'#; This causes an error and prevents the statement from running. What's the best way to bind a date string in PDO without causing this error? I'm currently resorting to sprintf-ing the string which I'm sure is bad practise. Edit: if I pass the hash-surrounded date then I still get the error as below: Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[22018]: Invalid character value for cast specification: -3030 [Microsoft][ODBC Microsoft Access Driver] Data type mismatch in criteria expression. (SQLExecute[-3030] at ext\pdo_odbc\odbc_stmt.c:254)' in C:\xampp\htdocs\ips\php\classes.php:49 Stack trace: #0 C:\xampp\htdocs\ips\php\classes.php(49): PDOStatement-execute() #1 C:\xampp\htdocs\ips\php\classes.php(52): database-execute() #2 C:\xampp\htdocs\ips\try2.php(12): database-resultset() #3 {main} thrown in C:\xampp\htdocs\ips\php\classes.php on line 49

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• EDIT Control Showing Squares Instead Of Returns

  - by Nathan Campos

  I'm playing a little bit with PocketC by doing a simple text editor. But with this code to read and to display the contents of the file on the EDIT control: int filehandle; int file_len; string file_mode; initComponents() { createctrl("EDIT", "test", 2, 1, 0, 24, 70, 25, TEXTBOX); wndshow(TEXTBOX, SW_SHOW); guigetfocus(); } main() { filehandle = fileopen(OpenFileDlg("Plain Text Files (*.txt)|*.txt; All Files (*.*)|*.*"), 0, FILE_READWRITE); file_len = filegetlen(filehandle); if(filehandle == -1) { MessageBox("File Could Not Be Found!", "Error", 3, 1); } initComponents(); editset(TEXTBOX, fileread(filehandle, file_len)); } It's all ok, but my test file, now have returns: Hello, World! PocketC Test Of My Editor Then when I open this file on the editor, instead of returns, I just see two squares(that means that it's a unknown character for that control), but if I change the control to a STATIC, it does he returns ok, but I can't edit the text if I use a STATIC. Then I want to know what I need to do to do the returns instead of showing those squares.

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• Why does std::cout convert volatile pointers to bool?

  - by Joseph Garvin

  If you try to cout a volatile pointer, even a volatile char pointer where you would normally expect cout to print the string, you will instead simply get '1' (assuming the pointer is not null I think). I assume output stream operator<< is template specialized for volatile pointers, but my question is, why? What use case motivates this behavior? Example code: #include <iostream> #include <cstring> int main() { char x[500]; std::strcpy(x, "Hello world"); int y; int *z = &y; std::cout << x << std::endl; std::cout << (char volatile*)x << std::endl; std::cout << z << std::endl; std::cout << (int volatile*)z << std::endl; return 0; } Output: Hello world 1 0x8046b6c 1

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• How to remove view from window?

  - by Wayfarer

  I am using Cocos2D for my main framework. In some cases, I want Cocos2D to load a nib file and have that be the view: window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; TargetPlayerViewController *myController = [[TargetPlayerViewController alloc]initWithNibName:@"TargetPlayerViewController" bundle:nil]; [window addSubview:[myController view]]; [window makeKeyAndVisible]; This works as expected, and shows the TargetPlayerViewController. Wonderful! What I need to know is: once that view has been loaded, how can I have the view remove itself? I've tried a few different ways, but all of them result in the program crashing. To test I have a button on the view set up which triggers this method: - (IBAction)GTFOnow:(id)sender { NSLog(@"GFTO"); window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; //[self.view removeFromSuperview]; //[window makeKeyAndVisible]; } In this method the view should remove itself from the view so I can go back to the Cocos2D. How do I do this?

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• Php sting handling triks

  - by Dam

  Hi my question Need to get the 10 word before and 10 words after for the given text . i mean need to start the 10 words before the keyword and end with 10 word after the key word. Given text : "Twenty-three" The main trick the having some html tags tags need to keep that tag with this content only the words from 10before - 10after content is bellow : <div id="hpFeatureBoxInt"><h2><span class="dy">Top News Story</span></h2><h3><a href="/go/homepage/i/int/news/world/1/-/news/1/hi/world/europe/8592190.stm">Suicide bombings hit Moscow Metro</a></h3><p>Past suicide bombings in Moscow have been blamed on Islamist rebels At least 35 people have been killed after two female suicide bombers blew themselves up on Moscow Metro trains in the morning rush hour, officials say.<img height="150" width="201" alt="Emergency services carry a body from a Metro station in Moscow (29 March 2010)" src="http://wwwimg.bbc.co.uk/feedengine/homepage/images/_47550689_moscowap203_201x150.jpg">Twenty-three died in the first blast at 0756 (0356 GMT) as a<a href="#"> train stood </a>at the central Lubyanka station, beneath the offices of the FSB intelligence agency.About 40 minutes later, a second explosion ripped through a train at Park Kultury, leaving another 12 dead.No-one has said they carried out the worst attack in the capital since 2004. </p><p id="fbilisten"><a href="/go/homepage/i/int/news/heading/-/news/">More from BBC News</a></p></div> Thank you

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