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• iPhone SDK linking errors with static library

  - by Nico

  Hello all! I've built my own static library with components to be reused in my project, and recently had the need to update a bunch of classes. Specifically, some methods' signatures were changed due to the fact that some classes changed names. What happens now is that the library compiles fine on its own, but, when added to an app project, the project fails to link: Ld build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales normal armv6 cd /Users/nameghino/src/Sucursales setenv IPHONEOS_DEPLOYMENT_TARGET 3.1 setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 -arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk -L/Users/nameghino/src/Sucursales/build/Debug-iphoneos -L/Users/nameghino/src/Sucursales/../../Library/MyLibraries/MSSharedLibrary-1.0.0 -F/Users/nameghino/src/Sucursales/build/Debug-iphoneos -filelist /Users/nameghino/src/Sucursales/build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales.LinkFileList -dead_strip -lxml2 -ObjC -all_load -miphoneos-version-min=3.1 -framework Foundation -framework UIKit -framework CoreGraphics -lsqlite3.0 -framework CoreLocation -framework MapKit -lxml2 /Users/nameghino/src/MSSharedComponents/Frameworks/MSSharedLibrary/build/Debug-iphoneos/libMSSharedLibrary.a -o /Users/nameghino/src/Sucursales/build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales Undefined symbols: "_OBJC_CLASS_$_DataCatalogService_GetSingleRow", referenced from: objc-class-ref-to-DataCatalogService_GetSingleRow in libMSSharedLibrary.a(MSDataCatalogSpecification.o) **"_OBJC_CLASS_$_DataCatalogService_ArrayOfString", referenced from: objc-class-ref-to-DataCatalogService_ArrayOfString in libMSSharedLibrary.a(MSDataCatalogSpecification.o) "_OBJC_CLASS_$_DataCatalogService_GetSingleRowResponse", referenced from: objc-class-ref-to-DataCatalogService_GetSingleRowResponse in libMSSharedLibrary.a(MSSingleRowResultsParser.o) "_OBJC_CLASS_$_DataCatalogService_GetMultiRowResponse", referenced from: objc-class-ref-to-DataCatalogService_GetMultiRowResponse in libMSSharedLibrary.a(MSMultiRowResultsParser.o) "_OBJC_CLASS_$_DataCatalogService_GetMultiRow", referenced from: objc-class-ref-to-DataCatalogService_GetMultiRow in libMSSharedLibrary.a(MSDataCatalogSpecification.o) "_OBJC_CLASS_$_DataCatalogService_HelloWorldResponse", referenced from: objc-class-ref-to-DataCatalogService_HelloWorldResponse in libMSSharedLibrary.a(DataCatalogService.o) ld: symbol(s) not found collect2: ld returned 1 exit status** The curious thing is that after a lot of project cleanups (both in the app and the lib projects), I still get the same issue. Even after starting a new project, the problem is still there. I've also taken care to restart Xcode between a clean and a build a couple of times, but no good. Any ideas on where to look? Thanks in advance Nico

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• MP3 Decoding on Android

  - by Rob Szumlakowski

  Hi. We're implementing a program for Android phones that plays audio streamed from the internet. Here's approximately what we do: Download a custom encrypted format. Decrypt to get chunks of regular MP3 data. Decode MP3 data to raw PCM data in a memory buffer. Pipe the raw PCM data to an AudioTrack Our target devices so far are Droid and Nexus One. Everything works great on Nexus One, but the MP3 decode is too slow on Droid. The audio playback starts to skip if we put the Droid under load. We are not permitted to decode the MP3 data to SD card, but I know that's not our problem anyways. We didn't write our own MP3 decoder, but used MPADEC (http://sourceforge.net/projects/mpadec/). It's free and was easy to integrate with our program. We compile it with the NDK. After exhaustive analysis with various profiling tools, we're convinced that it's this decoder that is falling behind. Here's the options we're thinking about: Find another MP3 decoder that we can compile with the Android NDK. This MP3 decoder would have to be either optimized to run on mobile ARM devices or maybe use integer-only math or some other optimizations to increase performance. Since the built-in Android MediaPlayer service will take URLs, we might be able to implement a tiny HTTP server in our program and serve the MediaPlayer with the decrypted MP3s. That way we can take advantage of the built-in MP3 decoder. Get access to the built-in MP3 decoder through the NDK. I don't know if this is possible. Does anyone have any suggestions on what we can do to speed up our MP3 decoding? -- Rob Sz

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• problem in fonts type and fonts size on printing

  - by user1400

  hello i have a application on php that i show a report in the table , i want to print this page i can see my page fine in print preview , but when i send thuis page to printer ,the fonts are small and diffrent fonts that i set in css file this is my css file @page { size: A4 landscape; margin-top:2cm; margin-bottom:1cm; margin-left:1cm; margin-right:1cm; } table.print{ text-align:right; border:#999 1px solid; } table.print td.e1{ border-top:#999 1px solid; padding:5px 2px; text-align: right; font-size: 20pt; font-family:"stencil"; } table.print td.e2{ border-top:#999 1px solid; padding:5px 2px; text-align: right; font-size: 120%; font-family:"tahoma"; } thanks

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• Code to connect to remote server using perl

  - by user304852

  I'm written small code to connect to remote server using perl but observing error messages #!/usr/bin/perl -w use Net::Telnet; $telnet = new Net::Telnet ( Timeout=>60, Errmode=>'die'); $telnet->open('192.168.50.40'); $telnet->waitfor('/login:/'); $telnet->print('queen'); $telnet->waitfor('/password:/'); $telnet->print('kinG!'); $telnet->waitfor('/:/'); $telnet->print('vol >> C:\result.txt'); $telnet->waitfor('/:/'); $telnet->cmd("mkdir vol"); $telnet->print('mkdir vol234'); $telnet->cmd("mkdir vol1"); $telnet->waitfor('/\$ $/i'); $telnet->print('whoamI'); print $output; But while running i'm getting following errors C:\>perl -c E:\test\net.pl E:\test\net.pl syntax OK C:\>perl E:\test\net.pl command timed-out at E:\test\net.pl line 13 C:\> Help me in this regard.. i'm not much aware of perl

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• CSS positioning is weird when reducing the viewport

  - by Lars Hanke

  I have a little meditation for you ... I run a site using a liquid tri-col layout with a header. The layout runs nicely since more than a decade with all browsers I ever dared to try. It is based on absolute positioning in CSS. This page provides an example of the actual site. Watching the page from my tablet I found that the right column overlaps the center matter. Further investigation using Firebug showed that once the center content reaches 360px width, the right margin of the div shrinks. Why is that? Since Firefox and Android render the same, I guess that this is something, which is actually supposed to be. However, I tried to make virtue out of necessity and experimented setting min-width for body and content and made the body scroll overflow. The body actually scrolls, but the right column is positioned on the right edge of the viewport instead of the body element (Firefox). Is this intentional CSS standard? Any ideas how to solve the presentation on small displays? Thanks for your efforts,  – lars.

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• Find the "largest" dense sub matrix in a large sparse matrix

  - by BCS

  Given a large sparse matrix (say 10k+ by 1M+) I need to find a subset, not necessarily continuous, of the rows and columns that form a dense matrix (all non-zero elements). I want this sub matrix to be as large as possible (not the largest sum, but the largest number of elements) within some aspect ratio constraints. Are there any known exact or aproxamate solutions to this problem? A quick scan on Google seems to give a lot of close-but-not-exactly results. What terms should I be looking for? edit: Just to clarify; the sub matrix need not be continuous. In fact the row and column order is completely arbitrary so adjacency is completely irrelevant. A thought based on Chad Okere's idea Order the rows from largest count to smallest count (not necessary but might help perf) Select two rows that have a "large" overlap Add all other rows that won't reduce the overlap Record that set Add whatever row reduces the overlap by the least Repeat at #3 until the result gets to small Start over at #2 with a different starting pair Continue until you decide the result is good enough

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• C# Gui setting control.Enabled to false fires OnClick event???

  - by Daniel

  For some really weird reason when i set the .Enabled property to false on a simple text box on a small GUI, it fires a radio buttons OnClick event and its causing lots of problems. I have breakpointed the txtBox.Enabled = false; and after stepping over OR into it i jump straight to the OnClick event of the radio button control Here is the call stack as that happened: TestGUI.exe!TestGUI.frmMain.radiobuttonClicked(object sender = {Text = "Download Single Episode" Checked = true}, System.EventArgs e = {System.EventArgs}) Line 67 C# System.Windows.Forms.dll!System.Windows.Forms.Control.OnClick(System.EventArgs e) + 0x70 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnClick(System.EventArgs e) + 0x27 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnEnter(System.EventArgs e = {System.EventArgs}) + 0x3e bytes System.Windows.Forms.dll!System.Windows.Forms.Control.NotifyEnter() + 0x20 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.UpdateFocusedControl() + 0x195 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.AssignActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x54 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActivateControlInternal(System.Windows.Forms.Control control, bool originator = false) + 0x76 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x73 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControl(System.Windows.Forms.Control ctl) + 0x33 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActiveControl.set(System.Windows.Forms.Control value) + 0x5 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Select(bool directed, bool forward) + 0x1b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControl(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x7b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControlInternal(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x4a bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextIfFocused() + 0x61 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Enabled.set(bool value) + 0x42 bytes What the hell? It wouldn't have anything to do with the way i subscribe to the events would it? this.radioBtnMultipleDownload.Click += radiobuttonClicked; this.radioBtnSingleDownload.Click += radiobuttonClicked; this.radioCustomUrl.Click += radiobuttonClicked;

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• Python recursive function error: "maximum recursion depth exceeded"

  - by user283169

  I solved Problem 10 of Project Euler with the following code, which works through brute force: def isPrime(n): for x in range(2, int(n**0.5)+1): if n % x == 0: return False return True def primeList(n): primes = [] for i in range(2,n): if isPrime(i): primes.append(i) return primes def sumPrimes(primelist): prime_sum = sum(primelist) return prime_sum print (sumPrimes(primeList(2000000))) The three functions work as follows: isPrime checks whether a number is a prime; primeList returns a list containing a set of prime numbers for a certain range with limit 'n', and; sumPrimes sums up the values of all numbers in a list. (This last function isn't needed, but I liked the clarity of it, especially for a beginner like me.) I then wrote a new function, primeListRec, which does exactly the same thing as primeList, to help me better understand recursion: def primeListRec(i, n): primes = [] #print i if (i != n): primes.extend(primeListRec(i+1,n)) if (isPrime(i)): primes.append(i) return primes return primes The above recursive function worked, but only for very small values, like '500'. The function caused my program to crash when I put in '1000'. And when I put in a value like '2000', Python gave me this: RuntimeError: maximum recursion depth exceeded. What did I do wrong with my recursive function? Or is there some specific way to avoid a recursion limit?

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• UpdateModel() fails after migration from MVC 1.0 to MVC 2.0

  - by Alastair Pitts

  We are in the process of migrating our ASP.NET MVC 1.0 web app to MVC 2.0 but we have run into a small snag. In our report creation wizard, it is possible leave the Title text box empty and have it be populated with a generic title (in the post action). The code that does the update on the model of the Title is: if (TryUpdateModel(reportToEdit, new[] { "Title" })) { //all ok here try to create (custom validation and attach to graph to follow) //if title is empty get config subject if (reportToEdit.Title.Trim().Length <= 0) reportToEdit.Title = reportConfiguration.Subject; if (!_service.CreateReport(1, reportToEdit, SelectedUser.ID, reportConfigID, reportCategoryID, reportTypeID, deviceUnitID)) return RedirectToAction("Index"); } In MVC 1.0, this works correctly,the reportToEdit has an empty title if the textbox is empty, which is then populated with the Subject property. In MVC 2.0 this fails/returns false. If I add the line above: UpdateModel(reportToEdit, new[] { "Title" }); it throws System.InvalidOperationException was unhandled by user code Message="The model of type 'Footprint.Web.Models.Reports' could not be updated." Source="System.Web.Mvc" StackTrace: at System.Web.Mvc.Controller.UpdateModel[TModel](TModel model, String prefix, String[] includeProperties, String[] excludeProperties, IValueProvider valueProvider) at System.Web.Mvc.Controller.UpdateModel[TModel](TModel model, String[] includeProperties) at Footprint.Web.Controllers.ReportsController.Step1(FormCollection form) in C:\TFS Workspace\ExtBusiness_Footprint\Branches\apitts_uioverhaul\Footprint\Footprint.Web\Controllers\ReportsController.cs:line 398 at lambda_method(ExecutionScope , ControllerBase , Object[] ) at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) InnerException: Reading the MVC2 Release notes I see this breaking change: Every property for model objects that use IDataErrorInfo to perform validation is validated, regardless of whether a new value was set. In ASP.NET MVC 1.0, only properties that had new values set would be validated. In ASP.NET MVC 2, the Error property of IDataErrorInfo is called only if all the property validators were successful. but I'm confused how this is affecting me. I'm using the entity framework generated classes. Can anyone pinpoint why this is failing?

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• Using Alarmmanager to start a service at specific time

  - by Javadid

  Hi friends, I have searched a lot of places but couldnt find a clean sequential explanation of how to start a service (or if thats not possible then an activity) at a specific time daily using the AlarmManager?? I want to register several such alarms and triggering them should result in a service to be started. I'll be having a small piece of code in the service which can then execute and i can finish the service for good.... Calendar cal = Calendar.getInstance(); Calendar cur_cal = Calendar.getInstance(); cur_cal.setTimeInMillis(System.currentTimeMillis()); Date date = new Date(cur_cal.get(Calendar.YEAR), cur_cal.get(Calendar.MONTH), cur_cal.get(Calendar.DATE), 16, 45); cal.setTime(date); Intent intent = new Intent(ProfileList.this, ActivateOnTime.class); intent.putExtra("profile_id", 2); PendingIntent pintent = PendingIntent.getService(ProfileList.this, 0, intent, 0); AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE); alarm.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pintent); System.out.println("The alarm set!!"); i tried this code to activate the alarm at 4.45... but its not firing the service... do i have to keep the process running?? M i doing anything wrong??? One more thing, my service gets perfectly executed in case i use the following code: long firstTime = SystemClock.elapsedRealtime(); alarm.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime, 30*1000,pintent);

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• SQL Server Express 2005 Merge Replication using RMO causes Null Reference exception

  - by Craig Shearer

  I'm trying to use RMO to programmatically perform merge synchronization. I've basically copied the SQL Server example code, as follows: // Create a connection to the Subscriber. ServerConnection conn = new ServerConnection(subscriberName); MergePullSubscription subscription; try { // Connect to the Subscriber. conn.Connect(); // Define the pull subscription. subscription = new MergePullSubscription(subscriptionDbName, publisherName, publicationDbName, publicationName, conn, false); // If the pull subscription exists, then start the synchronization. if (subscription.LoadProperties()) { // Check that we have enough metadata to start the agent. if (subscription.PublisherSecurity != null || subscription.DistributorSecurity != null) { subscription.SynchronizationAgent.Synchronize(); } else { throw new ApplicationException("There is insufficent metadata to " + "synchronize the subscription. Recreate the subscription with " + "the agent job or supply the required agent properties at run time."); } } else { // Do something here if the pull subscription does not exist. throw new ApplicationException(String.Format( "A subscription to '{0}' does not exist on {1}", publicationName, subscriberName)); } } catch (Exception ex) { // Implement appropriate error handling here. throw new ApplicationException("The subscription could not be " + "synchronized. Verify that the subscription has " + "been defined correctly.", ex); } finally { conn.Disconnect(); } I've got the server merge publication defined correctly, but when I run the above code, I get a null reference exception on the call to: subscription.SynchronizationAgent.Synchronize(); The stack trace is as follows: at Microsoft.SqlServer.Replication.MergeSynchronizationAgent.StatusEventSinkMethod(String message, Int32 percent, Int32* returnValue) at Test.ConsoleTest.Program.SynchronizePullSubscription() in F:\Visual Studio Projects\Test\source\Test.ConsoleTest\Program.cs:line 124 It seems, from the stack trace, like something to do with the Status event, but I don't have a handler defined, and defining one makes no difference.

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• spring-mvc binding arraylist in form

  - by Mike

  In my controller I added an ArrayList to my model with the attribute name "users". Now I looked around and this is the method I found (including a question here): <form:form action="../user/edit" method="post" modelAttribute="users"> <table> <c:forEach var="user" items="${users}" varStatus="counter"> <tr> <td> <form:input path="users[${counter.index}].age"/> </td> <td><button type="submit" name="updateId" id="Update" value="${user.id}">Update</button></td> </tr> </c:forEach> </table> </form:form> But when I load the JSP page I get: .springframework.beans.NotReadablePropertyException: Invalid property 'projects[0]' of bean class [java.util.ArrayList]: Bean property 'users[0]' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter? So apparantely this isn't the way to go, but in that case how do I bind an arraylist so I can edit the values?

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• c# SmtpClient class not able to send email using gmail

  - by Sir Psycho

  Hi, I'm having trouble with this code sending email using my gmail account. Im pulling my hair out. The same settings work fine in Thunderbird. Heres the code. I've also tried port 465 with no luck. SmtpClient ss = new SmtpClient("smtp.gmail.com", 587); ss.Credentials = new NetworkCredential("username", "pass"); ss.EnableSsl = true; ss.Timeout = 10000; ss.DeliveryMethod = SmtpDeliveryMethod.Network; ss.UseDefaultCredentials = false; MailMessage mm = new MailMessage("[email protected]", "[email protected]", "subject here", "my body"); mm.BodyEncoding = UTF8Encoding.UTF8; mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure; ss.Send(mm); Heres the error "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at " Heres the stack trace at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response) at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, String from) at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message) at email_example.Program.Main(String[] args) in C:\Users\Vince\Documents\Visual Studio 2008\Projects\email example\email example\Program.cs:line 23 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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• SIGABRT error when running on iPad

  - by user324881

  Hello, all. I've been banging my head for a few hours because of this problem. I have a universal project that's a mix of iPhone and iPad projects. I put these codebases together into the universal project and, after a lot of "#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 30200" checks, got the project to run in both the iPhone (OS 3.0 to 3.1.3) and iPad simulators. After doing a more finagling with the project settings of external libraries that I load, I got the app to load on an iPhone (which runs OS 3.1.3). However, when I run the app on my iPad, I get an immediate SIGABRT error. I've tried running it under Debug, under Release, with Active Architecture of both armv6 and armv7. I've checked and double-checked that the app has the right nib files set up (but, again, this app runs fine in the simulator). I've gone through the external libraries I'm using and set them up to have the same base SDK (3.2), same architectures (Optimized (armv6 armv7)), the same targeted device family (iPhone/iPad), and the same iPhone OS deployment target (iPhone OS 3.0). So, to summarize... I have a universal app that works in the simulator for iPhone and iPad, runs on an actual iPhone, but doesn't run on an iPad. It doesn't get far on the iPad -- there's an immediate SIGABRT error that stops execution. Help??

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• cookieless sessions with ajax

  - by thezver

  ok, i know you get sick from this subject. me too :( I've been developing a quite "big application" with PHP & kohana framework past 2 years, somewhat-successfully using my framework's authentication mechanism. but within this time, and as the app grown, many concerning state-preservation issues arisen. main problems are that cookie-driven sessions: can't be used for web-service access ( at least it's really not nice to do so.. ) in many cases problematic with mobile access don't allow multiple simultaneous apps on same browser ( can be resolved by hard trickery, but still.. ) requires many configurations and mess to work 100% right, and that's without the --browser issues ( disabled cookies, old browsers bugs & vulnerabilities etc ) many other session flaws stated in this old thread : http://lists.nyphp.org/pipermail/talk/2006-December/020358.html After a really long research, and without any good library/on-hand-solution to feet my needs, i came up with a custom solution to majority of those problems . Basically, i'ts about emulating sessions with ajax calls, with additional security/performance measures: state preserved by interchanging SID(+hash) with client on ajax calls. state data saved in memcache(or equivalent), indexed by SID security achieved by: appending unpredictible hash to SID egenerating hash on each request & validating it validating fingerprint of client on each request ( referrer,os,browser etc) (*)condition: ajax calls are not simultaneous, to prevent race-condition with session token. (hopefully Ext-Direct solves that for me) From the first glance that supposed to be not-less-secure than equivalent cookie-driven implementation, and at the same time it's simple, maintainable, and resolves all the cookies flaws.. But i'm really concerned because i often hear the rule "don't try to implement custom security solutions". I will really appreciate any serious feedback about my method, and any alternatives. also, any tip about how to preserve state on page-refresh without cookies would be great :) but thats small technical prob. Sorry if i overlooked some similar post.. there are billions of them about sessions . Big thanks in advance ( and for reading until here ! ).

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• newline-ignoring diff / diff across multiple lines / reflow-ignoring diff

  - by Adam

  Does anybody know of a diff-like tool that can show me the changes between two text files, but ignore changes in whitespace including newlines? Here's an example: the quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. the quick brown fox jumped over the lazy bear. All I did was delete one word and reflow it, but "diff -b" detects a change on every line (as it should; I'm not saying this is a bug in diff). But for large LaTeX files this is a major problem; change one word in a long paragraph and the diff you get back is basically useless. By the way, I'm aware that this requires way more computational power than the usual lines-are-atomic diff. I'm only doing this on small human-generated files and am happy to wait a long time if I have to.

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• Unicode Collations problem ?

  - by Bayonian

  (.NET 3.5 SP1, VS 2008, VB.NET, MSSQL Server 2008) I'm writing a small web app to test the Khmer Unicode and Lao Unicode. I have a table that store text in Khmer Unicode with the following structure : [t_id] [int] IDENTITY(1,1) NOT NULL [t_chid] [int] NOT NULL [t_vn] [int] NOT NULL [t_v] [nvarchar](max) NOT NULL I can use Linq to SQL to do CRUD normally. The text display properly on the web page, even though I didn't change the default collation of MSSQL Server 2008. When it comes to search the column [t_v], the page will take a very long time to load and in fact, it loads every row of that column. It never compares with the "key word" criteria that I use for the search. Here's my query for the search : Public Shared Function SearchTestingKhmerTable(ByVal keyword As String) As DataTable Dim db As New BibleDataClassesDataContext() Dim query = From b In db.khmer_books _ From ch In db.khmer_chapters _ From v In db.testing_khmers _ Where v.t_v.Contains(keyword) And ch.kh_book_id = b.kh_b_id And v.t_chid = ch.kh_ch_id _ Select b.kh_b_id, b.kh_b_title, ch.kh_ch_id, ch.kh_ch_number, v.t_id, v.t_vn, v.t_v Dim dtDataTableOne = New DataTable("dtOne") dtDataTableOne.Columns.Add("bid", GetType(Integer)) dtDataTableOne.Columns.Add("btitle", GetType(String)) dtDataTableOne.Columns.Add("chid", GetType(Integer)) dtDataTableOne.Columns.Add("chn", GetType(Integer)) dtDataTableOne.Columns.Add("vid", GetType(Integer)) dtDataTableOne.Columns.Add("vn", GetType(Integer)) dtDataTableOne.Columns.Add("verse", GetType(String)) For Each r In query dtDataTableOne.Rows.Add(New Object() {r.kh_b_id, r.kh_b_title, r.kh_ch_id, r.kh_ch_number, r.t_id, r.t_vn, r.t_v}) Next Return dtDataTableOne End Function Please note that I use the exact same code and database design with Lao Unicode and it works just fine. I get the returned query as expected for the search. I can't figure out what the problem with searching for query in Khmer table.

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• WCF push to client through firewall?

  - by Sire

  See also How does a WCF server inform a WCF client about changes? (Better solution then simple polling, e.g. Coment or long polling) I need to use push-technology with WCF through client firewalls. This must be a common problem, and I know for a fact it works in theory (see links below), but I have failed to get it working, and I haven't been able to find a code sample that demonstrates it. Requirements: WCF Clients connects to server through tcp port 80 (netTcpBinding). Server pushes back information at irregular intervals (1 min to several hours). Users should not have to configure their firewalls, server pushes must pass through firewalls that have all inbound ports closed. TCP duplex on the same connection is needed for this, a dual binding does not work since a port has to be opened on the client firewall. Clients sends heartbeats to server at regular intervals (perhaps every 15 mins) so server knows client is still alive. Server is IIS7 with WAS. The solution seems to be duplex netTcpBinding. Based on this information: WCF through firewalls and NATs Keeping connections open in IIS But I have yet to find a code sample that works.. I've tried combining the "Duplex" and "TcpActivation" samples from Microsoft's WCF Samples without any luck. Please can someone point me to example code that works, or build a small sample app. Thanks a lot!

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• Preloading multiple comboboxes/listbox itemssource with enumerated values using WCF RIA Services

  - by Dale Halliwell

  I would like to be able to load several RIA entitysets in a single call without chaining/nesting several small LoadOperations together so that they load sequentially. I have several pages that have a number of comboboxes on them. These comboboxes are populated with static values from a database (for example status values). Right now I preload these values in my VM by one method that strings together a series of LoadOperations for each type that I want to load. For example: public void LoadEnums() { context.Load(context.GetMyStatusValues1Query()).Completed += (s, e) => { this.StatusValues1 = context.StatusValues1; context.Load(context.GetMyStatusValues2()).Completed += (s1, e1) => { this.StatusValues2 = context.StatusValues2; context.Load(context.GetMyStatusValues3Query()).Completed += (s2, e2) => { this.StatusValues3 = context.StatusValues3; (....and so on) }; }; }; }; While this works fine, it seems a bit nasty. Also, I would like to know when the last loadoperation completes so that I can load whatever entity I want to work on after this, so that these enumerated values resolve properly in form elements like comboboxes and listboxes. (I think) I can't do this easily above without creating a delegate and calling that on the completion of the last loadoperation. So my question is: does anyone out there know a better pattern to use, ideally where I can load all my static entitysets in a single LoadOperation?

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• Where are the factory_girl records?

  - by gmile

  I'm trying to perform an integration test via Watir and RSpec. So, I created a test file within /integration and wrote a test, which adds a test user into a base via factory_girl. The problem is — I can't actually perform a login with my test user. The test I wrote looks as following: ... before(:each) @user = Factory(:user) @browser = FireWatir::Firefox.new end it "should login" @browser.text_field(:id, "username").set(@user.username) @browser.text_field(:id, "password").set(@user.password) @browser.button(:id, "get_in").click end ... As I'm starting the test and see a "performance" in browser, it always fires up a Username is not valid error. I've started an investigation, and did a small trick. First of all I've started to have doubts if the factory actually creates the user in DB. So after the immediate call to factory I've put some puts User.find stuff only to discover that the user is actually in DB. Ok, but as user still couldn't have logged in I've decided to see if he's present in DB with my own eyes. I've added a sleep right after a factory call, and went to see what's in the DB at the moment. I was crushed to see that the user is actually missing there! How come? Still, when I'm trying to output a user within the code, he is actually being fetched from somewhere. So where does the records, made by factory_girl within a runtime lie? Is it test or dev DB? I don't get it. I've 10 times checked if I'm running my Mongrel in test mode (does it matter? I think it does, as I'm trying to tun an integration test) and if my database.yml holds the correct connection specific data. I'm using an authlogic, if that can give any clue (no, putting activate_authlogic doesn't work here).

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• Xcode 4 and cocos2D 1.0.0 beta Uncategorized errors and Info.plist doesn't exist

  - by badben

  I just installed the xcode 4 sdk and the cocos2d 1.0.0 beta template. I just created a new project with the cocos2d template. But when I build I got these errors : (for information my previous projects developed with xcode 3 have the same problem) warning: couldn't add 'com.apple.XcodeGenerated' tag to '/Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build': Error Domain=NSPOSIXErrorDomain Code=2 UserInfo=0x201dde680 "The operation couldn’t be completed. No such file or directory" error: unable to create '/Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates' (Permission denied) error: unable to create '/Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Products' (Permission denied) Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build/Objects-normal/i386 Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/PrecompiledHeaders/Prefix-dflnzjtztxdgjwhistrvvjxetfrg Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/PrecompiledHeaders/Prefix-fqemzerugrwojibbegzkffljkxqs Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Intermediates/xcode4.build/Debug-iphonesimulator/xcode4.build Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Index/PrecompiledHeaders/Prefix-dbtcglhksokwygezixirqkgfipsr_ast Unable to create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Index/PrecompiledHeaders/Prefix-gdirtpasdqzasnclnkzguimarjpd_ast error: couldn't create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Products/Debug-iphonesimulator/xcode4.app: Permission denied error: couldn't create directory /Users/Benoit/Library/Developer/Xcode/DerivedData/xcode4-bswxazfuwbsguiasyatbtlmvbpps/Build/Products/Debug-iphonesimulator/xcode4.app: Permission denied The file “Info.plist” doesn’t exist. Please help !!

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• Easy to use AutoHotkey/AutoIT alternatives for Linux

  - by Xeddy

  Hi all, I'm looking for recommendations for an easy-to-use GUI automation/macro platform for Linux. If you're familiar with AutoHotkey or AutoIT on Windows, then you know exactly the kind of features I need, with the level of complexity. If you aren't familiar, then here's a small code snippet of how easy it is to use AHK: InputBox, varInput, Please enter some random text... Run, notepad.exe WinWaitActive, Untitled - Notepad SendInput, %varInput% SendInput, !f{Up}{Enter}{Enter} WinWaitActive, Save SendInput, SomeRandomFile{Enter} MsgBox, Your text`, %varInput% has been saved using notepad! #n::Run, notepad.exe Now the above example, although a bit pointless, is a demo of the sort of functionality and simplicity I'm looking for. Here's an explanation for those who don't speak AHK: ----Start of Explanation of Code ---- Asks user to input some text and stores it in varInput Runs notepad.exe Waits till window exists and is active Sends the contents of varInput as a series of keystrokes Sends keystrokes to go to File - Exit Waits till the "Save" window is active Sends some more keystrokes Shows a Message Box with some text and the contents of a variable Registers a hotkey, Win+N, which when pressed executes notepad.exe ----End of Explanation---- So as you can understand, the features are quite obvious: Ability to easily simulate keyboard and mouse functions, read input, process and display output, execute programs, manipulate windows, register hotkeys, etc.. all being done without requiring any #includes, unnecessary brackets, class declarations etc. In short: Simple. Now I've played around a bit with Perl and Python, but its definitely no AHK. They're great for more advanced stuff, but surely, there has to be some tool out there for easy GUI automation? PS: I've already tried running AHK with Wine but sending keystrokes and hotkeys don't work.

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• Cannot cause $(this).find("a").click(); to fire using JQuery

  - by Ali

  Hi Everyone, I have a small question which should be very easy for the jquery experts out there. I am trying to follow http://aspdotnetcodebook.blogspot.com/2010/01/page-languagec-autoeventwireuptrue.html to be able to perform an action on gridview row double click. I can redirect to another page fine (as shown in the example) but I cannot cause the $(this).find("a").click(); to fire. Below is my GridView markup. <asp:GridView ID="gvCustomers" runat="server" DataSourceID="odsCustomers" CssClass="datagrid" GridLines="None" AutoGenerateColumns="False" DataKeyNames="Customer_ID" PageSize="3" AllowPaging="True" AllowSorting="True" OnRowCommand="gvCustomers_RowCommand" OnRowDataBound="gvCustomers_RowDataBound"> <Columns> <asp:BoundField DataField="Customer_ID" HeaderText="ID" ReadOnly="true" Visible="false" /> <asp:BoundField DataField="Customer_FirstName" HeaderText="First Name" ReadOnly="true" /> <asp:BoundField DataField="Customer_LastName" HeaderText="Last Name" ReadOnly="true" /> <asp:BoundField DataField="Customer_Email" HeaderText="Email" ReadOnly="true" /> <asp:BoundField DataField="Customer_Mobile" HeaderText="Mobile" ReadOnly="true" /> <asp:TemplateField> <ItemTemplate> <asp:LinkButton ID="lnkButton" runat="server" CommandName="showVehicles" CommandArgument='<%# Eval("Customer_ID") %>' ></asp:LinkButton> </ItemTemplate> </asp:TemplateField> </Columns> <EmptyDataTemplate> Sorry No Record Found. </EmptyDataTemplate> </asp:GridView> I just cant make it work as the author has suggested: /* or you could have a hidden LinkButton in the row (Text="" or not set) that you could trigger. Make sure you set the CommandName="Something" and CommandArgument="RecordId" */ on the OnCommand of linkButton, I have my server side method which I would like to fire. Any ideas will be most apprecited. Thanks, Ali

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• What GUI tool can I use for building applications that interact with multiple APIs?

  - by tarasm

  My company uses a lot of different web services on daily bases. I find that I repeat same steps over and over again on daily bases. For example, when I start a new project, I perform the following actions: Create a new client & project in Liquid Planner. Create a new client Freshbooks Create a project in Github or Codebasehq Developers to Codebasehq or Github who are going to be working on this project Create tasks in Ticketing system on Codebasehq and tasks in Liquid Planner This is just when starting new projects. When I have to track tasks, it gets even trickier because I have to monitor tasks in 2 different systems. So my question is, is there a tool that I can use to create a web service that will automate some of these interactions? Ideally, it would be something that would allow me to graphically work with the web service API and produce an executable that I can run on a server. I don't want to build it from scratch. I know, I can do it with Python or RoR, but I don't want to get that low level. I would like to add my sources and pass data around from one service to another. What could I use? Any suggestions?

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• Frame Buster Buster ... buster code needed

  - by Jeff Atwood

  Let's say you don't want other sites to "frame" your site in an <iframe>: <iframe src="http://yourwebsite.com"></iframe> So you insert anti-framing, frame busting JavaScript into all your pages: /* break us out of any containing iframes */ if (top != self) { top.location.replace(self.location.href); } Excellent! Now you "bust" or break out of any containing iframe automatically. Except for one small problem. As it turns out, your frame-busting code can be busted, as shown here: <script type="text/javascript"> var prevent_bust = 0 window.onbeforeunload = function() { prevent_bust++ } setInterval(function() { if (prevent_bust > 0) { prevent_bust -= 2 window.top.location = 'http://server-which-responds-with-204.com' } }, 1) </script> This code does the following: increments a counter every time the browser attempts to navigate away from the current page, via the window.onbeforeonload event handler sets up a timer that fires every millisecond via setInterval(), and if it sees the counter incremented, changes the current location to a server of the attacker's control that server serves up a page with HTTP status code 204, which does not cause the browser to nagivate anywhere My question is -- and this is more of a JavaScript puzzle than an actual problem -- how can you defeat the frame-busting buster? I had a few thoughts, but nothing worked in my testing: attempting to clear the onbeforeunload event via onbeforeonload = null had no effect adding an alert() stopped the process let the user know it was happening, but did not interfere with the code in any way; clicking OK lets the busting continue as normal I can't think of any way to clear the setInterval() timer I'm not much of a JavaScript programmer, so here's my challenge to you: hey buster, can you bust the frame-busting buster?

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