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Articles indexed Monday June 14 2010

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  • Is the Windows dev environment worth the cost?

    - by MCS
    I recently made the move from Linux development to Windows development. And as much of a Linux enthusiast that I am, I have to say - C# is a beautiful language, Visual Studio is terrific, and now that I've bought myself a trackball my wrist has stopped hurting from using the mouse so much. But there's one thing I can't get past: the cost. Windows 7, Visual Studio, SQL Server, Expression Blend, ViEmu, Telerik, MSDN - we're talking thousands for each developer on the project! You're definitely getting something for your money - my question is, is it worth it? [Not every developer needs all the aforementioned tools - but have you ever heard of anyone writing C# code without Visual Studio? I've worked on pretty large software projects in Linux without having to pay for any development tool whatsoever.] Now obviously, if you're already a Windows shop, it doesn't pay to retrain all your developers. And if you're looking to develop a Windows desktop app, you just can't do that in Linux. But if you were starting a new web application project and could hire developers who are experts in whatever languages you want, would you still choose Windows as your development platform despite the high cost? And if yes, why?

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  • WCF and Firewall

    - by Jim Biddison
    I have written a very simple WCF service (hosted in IIS) and web application that talks to it. If they are both in the same domain, it works fine. But when I put them in different domains (on different sides of a firewall), then the web applications says: The request for security token could not be satisfied because authentication failed. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ServiceModel.FaultException: The request for security token could not be satisfied because authentication failed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. The revelant part of the service web.config is: <system.serviceModel> <services> <service behaviorConfiguration="MigrationHelperBehavior" name="MigrationHelper"> <endpoint address="" binding="wsHttpBinding" contract="IMigrationHelper"> <identity> <dns value="localhost" /> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> <endpoint binding="httpBinding" contract="IMigrationHelper" /> </service> </services> <behaviors> <serviceBehaviors> <behavior name="MigrationHelperBehavior"> <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> <serviceMetadata httpGetEnabled="true"/> <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> The web appliation (client) web.config says: <system.serviceModel> <bindings> <wsHttpBinding> <binding name="WSHttpBinding_IMigrationHelper" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false"/> <security mode="Message"> <transport clientCredentialType="Windows" proxyCredentialType="None" realm=""/> <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true"/> </security> </binding> </wsHttpBinding> </bindings> <client> <endpoint address="http://mydomain.com/MigrationHelper.svc" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IMigrationHelper" contract="MyNewServiceReference.IMigrationHelper" name="WSHttpBinding_IMigrationHelper"> <identity> <dns value="localhost"/> </identity> </endpoint> </client> </system.serviceModel> I believe both these are just the default that VS 2008 created for me. So my question is, how does one go about configurating the service and client, when they are not in the same domain? Thanks .Jim Biddison

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  • Binding data to the custom DataGridView

    - by Jatin Chaturvedi
    All, I have a customized DataGridView where I have implemented extra functionality and bounded datasource in the same custom DataGridView (Using C# and .NET). Now, I could able to use it properly by placing it on a panel control. I have added label as button on panel control to display data from datasource on to datagrid and create a binding source. Another Label which act as a button is used to update data from grid to databse. Issue: I pressed show label to display data in a dsatagridview. Modified the grid cell value and immediately pressed update label which is on same panel control. I observed that, the cursor is still in the grid cell when I press Save button. While saving, the cell value is null even though I have entered something in the presentation layer. My expected behaviour is to get the modified value while saving. Special Case: After typing something in the grid cell, if I click on somewhere else like the row below where I entered something, before I click on Save button, it is working fine. (Here, mainly I tried to remove the focus from the currently modified cell) Is there any way to bind sources before I click on save button? Please suggest me. Please feel free to ask me if you need any information. I have also seen same kind of problem on this forum, but unfortunately the author got the answer and didnt post it back. here is that URL: http://social.msdn.microsoft.com/Forums/en/winformsdesigner/thread/54dcc87a-adc2-4965-b306-9aa9e79c2946 Please help me.

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  • Default rules in Make

    - by notnoop
    Is there a mechanism in Make to allow for default implicit rules, similar to the built-in rules? Make provides some built-in implicit rules for compiling C/C++/Fortran files. I would like to extend my Make environment to have implicit rules for compiling Go files as well.

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  • jQuery: "Nested" visibility

    - by xyz
    I have a table with multiple <tbody> elements. At a given momement, certain <tbody elements are visible and some are hidden, and I need to select only the visible ones. I use jQuery's :visible selector. Now the problem is that I need to perform that task before I display the table, AKA while the table is hidden, and then the :visible selector doesn't work. How can I select "visible" <tbody> elements while the table is hidden? Thanks.

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  • xslt apply-templates in second level

    - by m00sila
    I cannot wrap <panel> tags to second level individual items as shown in Expected result bellow. But with the xslt i have written, all 1.x get into single node. Please help me. Source xml <root> <step id="1"> <content> <text> 1.0 Sample first level step text </text> </content> <content/> <step> <content> <text> 1.1 Sample second level step text </text> </content> </step> <step> <content> <text> 1.2 Sample second level step text </text> </content> </step> <step> <content> <text> 1.3 Sample second level step text </text> </content> </step> </step> </root> Expected output <panel> <panel> 1.0 Sample first level step text </panel> <panel> 1.1 Sample second level step text </panel> <panel> 1.2 Sample second level step text </panel> <panel> 1.3 Sample second level step text </panel> </panel> My XSLT <xsl:template match="/"> <panel> <xsl:apply-templates/> </panel> </xsl:template> <xsl:template match="root/step" > <panel> <panel> <xsl:apply-templates select ="content/text/node()"></xsl:apply-templates> </panel> <panel> <xsl:apply-templates select ="step/content/text/node()"></xsl:apply-templates> </panel> </panel> </xsl:template>

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  • Mysql Limit column value repetition N times

    - by Paper-bat
    Hi at all, is my first question here, so be patient ^^ I'll go directly to problem, I have two table Customer (idCustomer, ecc.. ecc..) Comment (idCustomer, idComment, ecc.. ecc..) obviosly the two table are joined togheter, for example SELECT * FROM Comment AS co JOIN Customer AS cu ON cu.idCustomer = co.idCustomer With this I select all comment from that table associated with is Customer, but now I wanna limit the number of Comment by 2 max Comment per Customer. The first thing I see is to use 'GROUP BY cu.idCustomer' but it limit only 1 Comment per Customer, but I wanna 2 Comment per Customer.. how now to proceed?

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  • Application is crash..

    - by user338322
    Below is my crash Report. 0 0x326712f8 in prepareForMethodLookup () 1 0x3266cf5c in lookUpMethod () 2 0x32668f28 in objc_msgSend_uncached () 3 0x33f70996 in NSPopAutoreleasePool () 4 0x33f82a6c in -[NSAutoreleasePool drain] () 5 0x00003d3e in -[CameraViewcontroller save:] (self=0x811400, _cmd=0x319c00d4, number=0x11e210) at /Users/hardikrathore/Desktop/LiveVideoRecording/Classes/CameraViewcontroller.m:266 6 0x33f36f8a in __NSFireDelayedPerform () 7 0x32da44c2 in CFRunLoopRunSpecific () 8 0x32da3c1e in CFRunLoopRunInMode () 9 0x31bb9374 in GSEventRunModal () 10 0x30bf3c30 in -[UIApplication _run] () 11 0x30bf2230 in UIApplicationMain () 12 0x00002650 in main (argc=1, argv=0x2ffff474) at /Users/hardikrathore/Desktop/LiveVideoRecording/main.m:14 And this is the code. lines, where I am getting the error. -(void)save:(id)number { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; j =[number intValue]; while(screens[j] != NULL){ NSLog(@" image made : %d",j); UIImage * image = [UIImage imageWithCGImage:screens[j]]; image=[self imageByCropping:image toRect:CGRectMake(0, 0, 320, 240)]; NSData *imgdata = UIImageJPEGRepresentation(image,0.3); [image release]; CGImageRelease(screens[j]); screens[j] = NULL; UIImage * image1 = [UIImage imageWithCGImage:screens[j+1]]; image1=[self imageByCropping:image1 toRect:CGRectMake(0, 0, 320, 240)]; NSData *imgdata1 = UIImageJPEGRepresentation(image1,0.3); [image1 release]; CGImageRelease(screens[j+1]); screens[j+1] = NULL; NSString *urlString=@"http://www.test.itmate4.com/iPhoneToServerTwice.php"; // setting up the request object now NSMutableURLRequest *request = [[NSMutableURLRequest alloc]init]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"POST"]; NSString *fileName=[VideoID stringByAppendingString:@"_"]; fileName=[fileName stringByAppendingString:[NSString stringWithFormat:@"%d",k]]; NSString *fileName2=[VideoID stringByAppendingString:@"_"]; fileName2=[fileName2 stringByAppendingString:[NSString stringWithFormat:@"%d",k+1]]; /* add some header info now we always need a boundary when we post a file also we need to set the content type You might want to generate a random boundary.. this is just the same as my output from wireshark on a valid html post */ NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; /* now lets create the body of the post */ //NSString *count=[NSString stringWithFormat:@"%d",front];; NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; count=\"@\"";filename=\"%@.jpg\"\r\n",count,fileName] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.jpg\"\r\n",fileName] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[NSData dataWithData:imgdata]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; //second boundary NSString *string1 = [[NSString alloc] initWithFormat:@"\r\n--%@\r\n",boundary]; NSString *string2 =[[NSString alloc] initWithFormat:@"Content-Disposition: form-data; name=\"userfile2\"; filename=\"%@.jpg\"\r\n",fileName2]; NSString *string3 =[[NSString alloc] initWithFormat:@"\r\n--%@--\r\n",boundary]; [body appendData:[string1 dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[string2 dataUsingEncoding:NSUTF8StringEncoding]]; //experiment //[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile2\"; filename=\"%@.jpg\"\r\n",fileName2] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[NSData dataWithData:imgdata1]]; //[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[string3 dataUsingEncoding:NSUTF8StringEncoding]]; // setting the body of the post to the reqeust [request setHTTPBody:body]; // now lets make the connection to the web NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; if([returnString isEqualToString:@"SUCCESS"]) { NSLog(returnString); k=k+2; j=j+2; [self performSelectorInBackground:@selector(save:) withObject:(id)[NSNumber numberWithInt:j]]; } //k=k+2; [imgdata release]; [imgdata1 release]; [NSThread sleepForTimeInterval:.01]; } [pool drain]; <-------------Line 266 } As you can see in log report. I am getting the error, Line 266. Some autorelease problem Any help !!!? coz I am not getting why its happening.

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  • Spring constructor injection of SLF4J logger - how to get injection target class?

    - by disown
    I'm trying to use Spring to inject a SLF4J logger into a class like so: @Component public class Example { private final Logger logger; @Autowired public Example(final Logger logger) { this.logger = logger; } } I've found the FactoryBean class, which I've implemented. But the problem is that I cannot get any information about the injection target: public class LoggingFactoryBean implements FactoryBean<Logger> { @Override public Class<?> getObjectType() { return Logger.class; } @Override public boolean isSingleton() { return false; } @Override public Logger getObject() throws Exception { return LoggerFactory.getLogger(/* how do I get a hold of the target class (Example.class) here? */); } } Is FactoryBean even the right way to go? When using picocontainers factory injection, you get the Type of the target passed in. In guice it is a bit trickier. But how do you accomplish this in Spring?

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  • remove parent xml tag

    - by cru3l
    For example, we have xml file with this format: <A> <B> <C></C> <D></D> <D></D> </B> </A> i need that: if all "D"-tags elements are empty, then we need to delete whole "A"-tag element and, of course, we need to do this with all "A"-tags in xml.

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  • How to configure Windows Server 2008 DHCP to supply unique subnet to a remote site?

    - by caleban
    The Main site hosts the only Windows Server. Windows Server 2008 R2 Domain Controller running AD, DNS, DHCP, Exchange 2007. Remote site has no Windows server. Main site subnet is 192.168.1.0/24 Remote site subnet is 192.168.2.0/24 The Windows Server at Main site is supplying 192.168.1.0/24 via DHCP to hosts at the local site where it resides. Is it possible to configure that Windows Server to supply 192.168.2.0/24 to hosts at the Remote site and if so how? We could use the Cisco router at the Remote site to supply DHCP but if possible we'd like to use the Windows Server at the Main site to supply DHCP.

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  • Under what circumstances might an IIS6 website be automatically deleted?

    - by E. Anderson
    Late last week my colleagues did some hardware maintenance on one of our vmWare esxi servers. One of the guests is a Windows Server 2003 Web Edition system that runs our low-traffic web sites. We discovered this morning that one of those websites was no longer working with what appeared to be an SSL error. After logging in, I found that the web site in question had been deleted from IIS! Is it possible for this to happen without a user actually going in and deleting that single web site? All of the other sites were fine. The files for the site in question had not been touched. I just re-created the web site, assigned the SSL cert, and everything was working again. When I logged in, I did see the 'Unexpected Shutdown' dialog.

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  • FreeBSD 8 and Samba 3.3 Samba seems to crash/not start?

    - by scraft3613
    I am both new to FreeBSD and Samba, and with that in mind ... I installed Samba 3.3. from Ports. I have this in my rc.conf: #samba nmbd_enable="YES" smbd_enable="YES" winbindd_enable="YES" I can see an active PID: prod1# cat /var/run/smbd.pid 24426 But it seems like smbd isn't running: prod1# ps -auwxx | egrep '[sn]mbd' root 24513 0.0 0.3 21108 4672 ?? Ss Sat02PM 0:00.71 /usr/local/sbin/nmbd -D -s /usr/local/etc/smb.conf If I restart samba with /usr/local/etc/rc.d/samba restart it runs: prod1# ps -auwxx | egrep '[sn]mbd' root 30188 0.0 0.3 21080 4700 ?? Ss 2:49PM 0:00.00 /usr/local/sbin/nmbd -D -s /usr/local/etc/smb.conf root 30196 0.0 0.6 35520 10952 ?? Ss 2:49PM 0:00.00 /usr/local/sbin/smbd -D -s /usr/local/etc/smb.conf root 30198 0.0 0.6 35520 10880 ?? S 2:49PM 0:00.00 /usr/local/sbin/smbd -D -s /usr/local/etc/smb.conf Until I do: prod1# smbclient -L prod1 Connection to prod1 failed (Error NT_STATUS_CONNECTION_REFUSED) prod1# prod1# ps -auwxx | egrep '[sn]mbd' root 30188 0.0 0.3 21080 4700 ?? Ss 2:49PM 0:00.00 /usr/local/sbin/nmbd -D -s /usr/local/etc/smb.conf What should I be checking to find out what's going on?

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  • Command line tool in python in a fixed root directory ...

    - by koleto
    I would like to install my python application as a command line tool that should work entirelly inside the install directory (for example C:\Python26\Lib\site-packages\application) The problem is I would like to reffer in runtime to the submodules and resources from within the application directory three. If I install the app with [console_scripts] option the default path is the current directory. Is there a elegant way to keep the current execution path of the application to the site-packages directory? Thanks

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  • What should a teen dev do for practical experience in development?

    - by aviraldg
    What should a teen dev do for practical experience? If you want more details , then read on: I learnt programming when I was 9 , with GWBASIC (which I now hate) , which was what was taught @ school. That was done in a month. After that I learnt C++ and relearnt it (as I didn't know of templates and the STL before that) Recently I learnt PHP , SQL and Python. This was around the time I switched over to Ubuntu. I'd always loved the "GNUish" style of software development so I jumped right in. However , most of the projects that I found required extensive knowledge of their existing codebase. So , right now I'm this guy who knows a couple of languages and has written a couple of small programs ... but hasn't gone "big", if you get it. I would love suggestions of projects that are informal and small to medium sized , and do not require much knowledge of the codebase. Also note that I've looked at things like Google Summer of Code and sites like savannah.gnu.org and the first doesn't apply , since I'm still in school and the latter either has infeasable projects , or things that are too hard.

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  • Powershell: resolve path that might not exist?

    - by Eamon Nerbonne
    I'm trying to process a list of files that may or may not be up to date and may or may not yet exist. In doing so, I need to resolve the full path of an item, even though the item may be specified with relative paths. However, Resolve-Path prints and error when used with a non-existant file. For example, What's the simplest, cleanest way to resolve ".\newdir\newfile.txt" to "C:\Current\Working\Directory\newdir\newfile.txt" in Powershell? Note that System.IO.Path's static method use with the process's working directory - which isn't the powershell current location.

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  • Linux / C++: Get Internet IP Address (not local computer's IP)

    - by Levo
    How can I programmatically get the Internet IP address? 1) If the computer is directly connected to the Internet using a USB modem. 2) If the computer is connected to the internet via another computer or a modem/router. I there a way to do both? P.S. This link gives exactly the Internet IP, but how can I use it in my program?

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  • PHP - Use isset inside function not working..?

    - by pnichols
    I have a PHP script that when loaded, check first if it was loaded via a POST, if not if GET['id'] is a number. Now I know I could do this like this: if(isset($_GET['id']) AND isNum($_GET['id'])) { ... } function isNum($data) { $data = sanitize($data); if ( ctype_digit($data) ) { return true; } else { return false; } } But I would like to do it this way: if(isNum($_GET['id'])) { ... } function isNum($data) { if ( isset($data) ) { $data = sanitize($data); if ( ctype_digit($data) ) { return true; } else { return false; } } else { return false; } } When I try it this way, if $_GET['id'] isn't set, I get a warning of undefined index: id... It's like as soon as I put my $_GET['id'] within my function call, it sends a warning... Even though my function will check if that var is set or not... Is there another way to do what I want to do, or am I forced to always check isset then add my other requirements..??

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