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• C# Processing Enter Key on Custom Container

  - by tycobb

  I am currently building a custom container control. Everything was going along smoothly until I hit a snag during testing. I noticed that the Enter key is not getting processed to the control that has focus inside the container. Everything else works as expected though. I am able to click the button with either the mouse or space bar, but enter does not want to get processed. After doing endless searches on container controls and processing the enter key I have come up with no solution. I tried returning Enter as true in IsInputKey(Keys keyData) and that didn't work. Neither did setting KeyPreview on the form. I have tried it with my custom button and .NET's standard button. Like I mentioned earlier, spacebar will trigger the desired effect. Please tell me what I am missing. There has to be an easy / stupid simple way to get Enter to process over to the active child control.

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• Problems adding static library QT project

  - by Smek

  I have problems adding a static library to my Qt project. I have two project one is my static library and the other one is a Qt GUI project. As I add all classes to my GUI project as c++ or header files everything works just fine but I want this to be in a separate library. When I select the option to add a library I check External library then I select the .a file I have build and the folder where my header files can be found because I am working on a Mac I select Mac as the target platform. Then I click continue and then done. macx: LIBS += -L$$PWD/../../MyLib/build-MyLib-Desktop_Qt_5_2_1_clang_64bit-Debug/ -lMyLib INCLUDEPATH += $$PWD/../../MyLib/build-MyLib-Desktop_Qt_5_2_1_clang_64bit-Debug/include DEPENDPATH += $$PWD/../../MyLib/build-MyLib-Desktop_Qt_5_2_1_clang_64bit-Debug/include macx: PRE_TARGETDEPS += $$PWD/../../MyLib/build-MyLib-Desktop_Qt_5_2_1_clang_64bit-Debug/libMyLib.a When I build my GUI project I get the following error: The process "/usr/bin/make" exited with code 2. Can anyone tell me what the problem can be and how to resolve the problem? Thanks

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• reversing keys/values - create new instance of HashMap

  - by stck777

  I’ve got an existing instance of HashMap simply called sale (it is Map) I use it to log customers and items history. Is there a way to create a new instance of HashMap, that effectively reverses this usage? i.e will show each item purchased as a unique key and the corresponding value as a String set of the customers that have purchased that product. I suspect there is a simple process using keySet() in some way to iterate over the sales map but I just can’t see how to do this. Any help would be much appreciated.

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• Is it possible to use AsyncTask in a Service class ?

  - by Spredzy

  Everything is in the title. On the official documentations it is stated that Note that services, like other application objects, run in the main thread of their hosting process and AsyncTask only works if it is executed in the UIThread. So is it possible to use AsyncTask in a Service class? I am trying to do so but I'm always getting the same error 05-01 18:09:25.487: ERROR/JavaBinder(270): java.lang.ExceptionInInitializerError ... 05-01 18:09:25.487: ERROR/JavaBinder(270): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() Am I doing something wrong or is this just impossible ?

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• Django comments form validation, check if the comment is from authenticated user

  - by Headcrab

  I wanted to add reCaptcha to the comment form, but only for non-authenticated users. I've created my own comments app, using reCaptcha more or less according to this post, except that I don't have any (explicit) view function to post the comment, but instead I check captcha as a part of form validation process. Everything works fine so far. Now, how do I disable reCaptcha for a logged in user? Removing all reCaptcha-related fields in the template is no problem, but how do I validate the form, not checking captcha if the comment if from an authenticated user? Alternatively, is there a way to use two different comment form classes, depending on whether the user is authenticated or not?

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• Ant database rebuild script, avoiding interactive prompting

  - by fras85

  Hi Guys. I'm writing an ant script to rebuild our database i.e. dropping everything and rebuilding from scratch. The problem our DBA adds a Y/N prompt before executing the rest of the script, and therefore we can't call this from an automated build process. Does anyone have any suggestions to circumvent the Y/N prompt? Obviously we could create seperate scripts, one for the DBA's and one for the automated build - but this requires maintaning both. We're running on Windows so it's not as easy as using sed to strip out the prompt...but i'm thinking something along those lines. Not sure if that's clear enough but hope you can help. Cheers.

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• Prevent my program from being flagged as malware

  - by user120242

  I know that this kind of behavior should be avoided in a publicly deployed program, but it's necessary. I do some hooking of process creation and file/registry I/O, and unpacking. I still trip a heuristic here and there, and I'm worried about future detections. Could I just contact as many AV vendors as I can, submit my program, and provide a link to my program being served publicly? Would it be possible to convince AV vendors to "whitelist" it? Does anyone perhaps have a list of places to submit false positives? Another problem I have is with people who don't update their malware scanners. There seems to be many people who just have old malware defintions and never bother to update. Is there anything that can be done about this? Or, if not, a way to check older definitions so I can locate what is being tripped, so I can try to avoid using that code?

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• Premature optimization is the root of all evil, but can it ever be too late?

  - by polygenelubricants

  "We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil" So what is that 3% like? Can the avoidance of premature optimization ever be taken too extreme that it does more harm than good? Even if it's rare, has there been a case of a real measurable software engineering disaster due to complete negligence to optimize early in the process? Bonus question: is software engineering pretty much the only field that has such a counter intuitive principle regarding doing something earlier rather than later before things potentially become too big a problem to fix? Personal question: how do you justify something as premature optimization and not just a case of you being lazy/ignorant/dumb?

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• Perl latin-9? Unicode - need to add support

  - by Phill Pafford

  I have an application that is being expanded to the UK and I will need to add support for Latin-9 Unicode. I have done some Googling but found nothing solid as to what is involved in the process. Any tips? Here is some code (Just the bits for Unicode stuff) use Unicode::String qw(utf8 latin1 utf16); # How to call $encoded_txt = $self->unicode_encode($item->{value}); # Function part sub unicode_encode { shift() if ref($_[0]); my $toencode = shift(); return undef unless defined($toencode); Unicode::String->stringify_as("utf8"); my $unicode_str = Unicode::String->new(); # encode Perl UTF-8 string into latin1 Unicode::String # - currently only Basic Latin and Latin 1 Supplement # are supported here due to issues with Unicode::String . $unicode_str->latin1( $toencode ); ... Any help would be great and thanks.

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• Why is EventListenerList traversed backwards in fireFooXXX()?

  - by Joonas Pulakka

  I don't understand the rationale of this code, taken from javax.swing.event.EventListenerList docs: protected void fireFooXXX() { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length-2; i>=0; i-=2) { if (listeners[i]==FooListener.class) { // Lazily create the event: if (fooEvent == null) fooEvent = new FooEvent(this); ((FooListener)listeners[i+1]).fooXXX(fooEvent); } } } Why is the list traversed backwards? Why is only every second listener called? The event firing is implemented exactly this way in javax.swing.tree.DefaultTreeModel among others, so it's obviously me who's just not getting something.

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• How to optimize an database suggestion engine

  - by Dimitar Vouldjeff

  Hi, I`m making an online engine for item-to-item recommending movies. I have made some researches and I think that the best way to implement that is using pearson correlation and make a table with item1, item2 and correlation fields, but the problem is that after each rate of item I have to regenerate the correlation for in the worst case N records (where N is the number of items). Another think that I read is the following article, but I haven`t thought a way to implement it. So what is your suggestion to optimize this process? Or any other suggestions? Thanks.

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• xcodeproj merge fails when adding new group

  - by user1473113

  I'm currently using Xcode with Git, and I'm experiencing some troubles during the merge process of my xcodeproj. Developer1 create a new group in Xcode file arborescence the commit and push. Developer2 on an other computer do the same with an other group name, commit and pull(with merge). The xcodeproj of Developer 2 become unreadable with Xcode. But when I create a new file or just drag and drop files from finder to repository, the merge succeed. Did someone has experienced that kind of trouble? I'm using in .gitattributes: *.pbxproj -crlf -diff merge=union # Better to treat them as binary files. *.pbxuser -crlf -diff -merge *.xib -crlf -diff -merge and in my .gitignore # Mac OS X *.DS_Store *~ # Xcode *.mode1v3 *.mode2v3 *.perspectivev3 *.xcuserstate project.xcworkspace/ xcuserdata/ *.xcodeproj/* !*.xcodeproj/project.pbxproj !*.xcodeproj/*.pbxuser # Generated files *.o *.pyc *.hi #Python modules MANIFEST dist/ build/ # Backup files *~.nib \#*# .#*

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• python fdb save huge data from database to file

  - by peter

  I have this script SELECT = """ select coalesce (p.ID,'') as id, coalesce (p.name,'') as name, from TABLE as p """ self.cur.execute(SELECT) for row in self.cur.itermap(): xml +=" <item>\n" xml +=" <id>" + id + "</id>\n" xml +=" <name>" + name + "</name>\n" xml +=" </item>\n\n" #save xml to file here f = open... and I need to save data from huge database to file. There are 10 000s (up to 40000) of items in my database and it takes very long time when script runs (1 hour and more) until finish. How can I take data I need from database and save it to file "at once"? (as quick as possible? I don't need xml output because I can process data from output on my server later. I just need to do it as quickly as possible. Any idea?) Many thanks!

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• Rails - how do you create a user index page like stack overflows with multiple tabs whilst keeping t

  - by adam

  On stackoverflow in the users profile area there are many tabs which all display differing information such as questions asked and graphs. Its the same view though and im wondering hows its best to achieve this in rails whilst keeping the controller skinny and logic in the view to a minimum. def index @user = current_user case params[:tab_selected] when "questions" @data = @user.questions when "answers" @sentences = @user.answers else @sentences = @user.questions end respond_to do |format| format.html # index.html.erb nd end but how do i process this in the index view without a load of if and else statments. And if questions and answers are presented differently whats the best way to go about this.

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• A consistent and simple group of IDE and tools for embedded code and unit test in C++ ?

  - by TridenT

  I’m starting a new firmware project in C++ for Texas Instrument C283xx and C6xxx targets. The unit tests will not run on the target, but will be compiled with gcc/gcov on a PC with windows (and run as well on PC) with simple metrics for tested code coverage. The whole project will be part of Cruise Control.NET for continuous integrations. My question is: what are the consistent IDE / framework / tools to work together? A/ One of the developers says CodeComposerStudio V3.1 for application and CodeBlocks + CxxUnit for the Unit tests. B/ I’m more attracted with CodeComposerStudio V4 for application, Eclipse CDT (well, as CCS V4) and CppUnit for unit test + MockCpp for mocks. I don’t want the best in class tools for each process, but a global, consistent and easy solution (or group of tools if you prefer).

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• change the default window font in a win32 windows project

  - by Vineel Kumar Reddy

  I am creating a GUI application using C and Win32 api. I would like to know how we can change the default font of the Main window to thaoma. I am comming from .NET background. In .NET if we change the font of parent control then automatically the child controls inherits that font.... Is there away similar to it or do we need to manually set the font of each control..... Please help me here.......and let me know the general process followed while coding in win32 api.... THanks in advance..

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• How to get application to use specific version of .NET?

  - by HN

  Hi, I am using pnunit to run nunit tests on remote machines, the pnunit agent loads the test and runs it in Windows 2008 but the test fails to load in Windows 2003, the agent error is INFO PNUnit.Agent.PNUnitAgent - Registering channel on port 9080 INFO PNUnit.Agent.PNUnitAgent - RunTest called for Test MyTest, AssemblyName test.dll, TestToRun test.Program.myDeployTest INFO PNUnit.Agent.PNUnitTestRunner - Spawning a new thread INFO PNUnit.Agent.PNUnitTestRunner - Thread entered for Test MyTest:test.Program.myDeployTest Assembly test.dll Unhandled Exception: System.BadImageFormatException: The format of the file 'test ' is invalid. File name: "test" Server stack trace: at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, B oolean isStringized, Evidence assemblySecurity, Boolean throwOnFileNotFound, Ass embly locationHint, StackCrawlMark& stackMark) On running procmon and monitoring the agent process i could see that the agent executable was using .NET 1.1 assemblies on Windows 2003 and .NET 2.0 on Windows 2008 which could be an explanation for this behavior. How do I get the agent to use .NET 2.0 on Windows 2003?

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• Mirror a website with httrack while executing javascript

  - by Martin

  I want do save a mirror of www.youtube.com/tv. I obviously do not want to save the videos. I want the code running the website in a local copy, everything else can stay remote. The code I want is mainly contained in 2 files: live.js and app-prod.js. I tried using httrack. I have issue parsing the javascript to load anything past the first file: live.js. The %P parameter does not help. httrack www.youtube.com/tv +* -r6 --mirror -%P -j It doesn't go further than live.js because some javascript needs to be executed to load the next file. I know I can do this manually with any browser. I want to automate the process. Is httrack able to do this by itself? If yes, how?

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• Replacement for PEAR: MDB2 on PHP 5.3

  - by mattweg

  I've been using pear packages in php for years. I'm in the process of upgrading/moving a sites that uses the MDB2 pear package and it has not been updated for PHP 5.3.X. In 5.3, MDB2 is returning those new annoying errors. Unknown: Assigning the return value of new by reference is deprecated in /usr/local/lib/php/MDB2.php on line 390 I know I can change my error reporting settings to get rid of them, but I'd rather not make any exceptions. Anyway, Is anyone else using MDB2 these days and have a solution? Are there similar database packages you recommend? Thanks. -Matt

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• Using a password to generate two distinct hashes without reducing password security

  - by Nevins

  Hi there, I'm in the process of designing a web application that will require the storage of GPG keys in an encrypted format in a database. I'm planning on storing the user's password in a bCrypt hash in the database. What I would like to be able to do is to use that bCrypt to authenticate the user then use the combination of the stored bCrypt hash and another hash of the password to encrypt and decrypt the GPG keys. My question is whether I can do this without reducing the security of the password? I was thinking I may be able to use something like an HMAC-SHA256 of a static string using the password and a salt as the secret key. Is there a better way to do this that I haven't thought of? Thanks

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• Best way to store data for Greasemonkey based crawler?

  - by Björn

  I want to crawl a site with Greasemonkey and wonder if there is a better way to temporarily store values than with GM_setValue. What I want to do is crawl my contacts in a social network and extract the Twitter URLs from their profile pages. My current plan is to open each profile in it's own tab, so that it looks more like a normal browsing person (ie css, scrits and images will be loaded by the browser). Then store the Twitter URL with GM_setValue. Once all profile pages have been crawled, create a page using the stored values. I am not so happy with the storage option, though. Maybe there is a better way? I have considered inserting the user profiles into the current page so that I could all process them with the same script instance, but I am not sure if XMLHttpRequest looks indistignuishable from normal user initiated requests.

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• Solution: Android INSTALL_FAILED_INSUFFICIENT_STORAGE error.

  - by Andrew Smith

  The INSTALL_FAILED_INSUFFICIENT_STORAGE error is the bane of every Android developer's life. It happens regardless of app size, or how much storage is available. Rebooting the target device fixes the problem briefly, but it soon comes back. There are hundreds (if not thousands) of message board posts from people asking why the problem occurs, but the folks at Google are frustratingly silent on the issue. There is a simple workaround. If your test device is running Android 2.2 or later then add the android:installLocation attribute to your application's manifest file, with the value "preferExternal". This will force the app to be installed on the device's external storage, such as a phone's SD card. For example: <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.andrewsmith.android.darkness" android:installLocation="preferExternal" This is more of a band-aid than a fix, and it may not be ideal if you want your finished app to install on the device's internal memory. But it will at least make the development process a lot less frustrating.

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• Visual C++: breakpoints disabled

  - by John

  I have a 'release with debug info' unmanaged c++ .exe (built with VS2005) deployed onto another PC, the .exe and .pdb are in the same folder. When I try to attach to the process from VS2005, either locally or remotely from my dev PC, all my breakpoints become disabled. I don't get any warning/error popups which makes me think the PDB file is being found, but not seen as 'good'. Is that the right interpretation? I think if it couldn't see the PDB I'd get a "no debug information could be found" popup. Has anyone got any ideas what can be wrong?

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• Selenium WebDriver works but SLOW (Java)

  - by Chris

  Code: WebDriver driver = new FirefoxDriver(); driver.get("http://www.cnn.com"); File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE); FileUtils.copyFile(scrFile, new File("c:\\test\\screenshot.png")); I am using Selenium WebDriver to take a screenshot of webpages. It runs great. However, from the time I hit run in eclipse to the time the screenshot shows up in my local drive is 7-10 seconds. Most of the latency seems to be launching Firefox. How can I speed up this process? Is there a way that I can use an already opened Firefox browser to save on opening a new one? Is this code somehow heavy? Details- Tried on CentOS box and Win7 box both using eclipse. myspeedtest.net shows 22Mbps down and 1 Mbps up.

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• When using Microsoft Test Manager 2010 with SfTS, how do QA engineers know what tests they have to run?

  - by MADCookie

  We are moving our projects to TFS 2010 using the SfTS v3 (Scrum for Team System) template. We need to understand how Microsoft Test Manager is supposed to be used in this Scrum process. Specific scenario & question: The QA manager uses Test Manager to create Acceptance Test Work Items (WIs). These new WIs are created and "assigned to" him. The manager doesn't run all the tests, instead he wants to give that responsibility to his staff. How is a QA engineer supposed to know that he has tests to run? Everything says it is assigned to the manager.

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