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• Engine Start and Stop Show Abnormal Behaviour

  - by Siddharth

  In my game, when I pause the game using mEngine.stop() it works perfectly but when I press resume button that has code mEngine.start() it provide some movement to the physics body. So the created body does not stand at its desire position after the resuming the game. That fault I have found in other game developed by other developer also. So please provide some guidance for it. I also tried with mScene.onUpdate(0) and mScene.onUpdate(1) but I does not able to found anything new from it.

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• Print Screen key doesn't work if a drop-down menu is active

  - by wim

  On 11.10, I don't get a screengrab when pressing the Print Screen button on my keyboard if I have activated a drop down menu. For example, in nautilus, I can click the File menu and press the print screen button, nothing happens. Deactivating the drop down menu and all other things being equal, it works. Is that normal? Often when using this thing I'm actually needing to show some of those menu options. Currently I use the workaround to grab after a delay of a few seconds, but I'm used to the print screen button working no matter what's in focus and would prefer it that way.

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• Ubuntu move fullscreen window to other monitor?

  - by dusz

  I have been using Cinnamon with Ubuntu for quite some time now and here with full screen applications (games and the like) I could press META to bring up the "start menu/tray" then right-click that application and "move to monitor - monitor 1" - I see no such button when right-clicking applications from tray on Ubuntu with Unity. I'd prefer being able to do it that way since I am more used to it, is there some way to enable it for Unity? For reference this is how it is on Cinnamon: http://i.stack.imgur.com/PC1rA.png Edit: I have been looking around with Ubuntu Tweak Tool, dconf-editor and CCSM - though I can't seem to find anything there.

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• strange bug - how to pause a java program?

  - by TerraNova993

  I'm trying to: display a text in a jLabel, wait for two seconds, then write a new text in the jLabel this should be simple, but I get a strange bug: the first text is never written, the application just waits for 2 seconds and then displays the final text. here is the example code: private void testButtonActionPerformed(java.awt.event.ActionEvent evt) { displayLabel.setText("Clicked!"); // first method with System timer /* long t0= System.currentTimeMillis(); long t1= System.currentTimeMillis(); do{ t1 = System.currentTimeMillis(); } while ((t1 - t0) < (2000)); */ // second method with thread.sleep() try { Thread.currentThread().sleep(2000); } catch (InterruptedException e) {} displayLabel.setText("STOP"); } with this code, the text "Clicked!" is never displayed. I just get a 2 seconds - pause and then the "STOP" text. I tried to use System timer with a loop, or Thread.sleep(), but both methods give the same result.

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• Can't Reboot into Windows 8.1 from Ubuntu

  - by Extended Range

  I am newb in Ubuntu. Currently I am using an Acer V11 laptop with a pre-intalled Windows 8.1. I follow some guideline (http://www.everydaylinuxuser.com/2014/05/install-ubuntu-1404-alongside-windows.html) which successfully install Ubuntu 14.04 LTS alongside Windows 8.1 with UEFI enabled all the way throughout the installation and my current usage and a GRUB. But I got into some problem. The dual boot mostly works fine as I am able to successfully boot into either one of the Windows 8.1 or Ubuntu when stating my laptop. However it ran into issue after I start the device and use Ubuntu for a while (2 hour for instance) and then restart it: If I press the restart from Ubuntu, the grub still shows and I am still able to choose the Windows Boot Manager. But the Windows loading process was stuck at the Acer Loading Screen and I am not able to see the standard circular Win8 loading progress bar. Does someone know why would this happens?

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• Why can't I log into Lubuntu after the 13.04 update, even if I know the password?

  - by gudrun

  After the 13.04 update the login screen started to appear, even though I chose to automatically login in the Lubuntu install options one week ago. Even if my password and username is correct it won't login, it will just come back to the login screen. When I press ALT-CTRL-F1 at the login screen I am able to login perfectly, but I have no GUI and I'm kind of lost on that field. WHat is going?Is it just a bug? Can I downgrade?I tried several forums with different solutions but none of them worked.

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• Alert user when they hit the browser back button - with good reson

  - by Dirty Bird Design

  I know this borders on the taboo here, and please don't reply with "you should never do this etc" I have a very long form in a wizard, some users are too used to using the browsers back and forward buttons that they use those instead of the "Back" and "Next" buttons on the form wizard. If they hit the browsers back button they lose all of their form data which is a pain in the ass, since form is so long. Is it possible to display an alert that when will have a "take me out of here" and a "cancel" button so if they hit cancel it will cancel the function of the back button? Thanks!

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• best way to write a-> ..->[a] recursive functions in haskell

  - by Roman A. Taycher

  So I keep having this small problem where I have something like func :: a -> b -> [a] -- or basically any a-> ...-> [a] where ... is any types -> func x y = func' [x] y -- as long as they are used to generate a list of [a] from x func' :: [a] -> b -> [a] func = undefined --situation dependant generates a list from each element and returns it as one long list should I keep it like this? should I use func' hidden by a where? should I only use the [a] - b - [a] version and leave the responsibility of passing [variable] to the callee? I might well need to compose these functions and might want to mess around with the order so I'm leaning towards option 3. What do you think?

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• Unique identification string in php

  - by NardCake

  Currently me and my friend are developing a website, for what we will call 'projects' we just have a basic auto increment id in the database used to navigate to projects such as oururl.com/viewproject?id=1 but we started thinking, if we have alot of posted projects thats going to be a LONG url. So we need to somehow randomly generate a alphanumerical string about 6 characters long. We want the chance of the string being duplicated being extremely low and of course we will query the database before assigning an identifier. Thanks for anyhelp, means alot!

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• Importing data from a text file using python

  - by Will

  I have a text file containing data in rows and columns (~17000 rows in total). Each column is a uniform number of characters long, with the 'unused' characters filled in by spaces. For example, the first column is 11 characters long, but the last four characters in that column are always spaces (so that it appears to be a nice column when viewed with a text editor). Sometimes it's more than four if the entry is less than 7 characters. The columns are not otherwise separated by commas, tabs, or spaces. They are also not all the same number of characters (the first two are 11, the next two are 8 and the last one is 5 - but again, some are spaces). What I want to do is import the entires (which are numbers) in the last two columns if the second column contains the string 'OW' somewhere in it. Any help would be greatly appreciated.

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• Nautilus (File) 3.10.1 how to lock drag and drop bookmarks

  - by Davide Marchi

  From the new Nautilus releases exist the ability to create shortcut/bookmarks simply by drag&drop folder onto the nautilus left panel; However, this behavior can unintentionally create additional bookmarks if you are not very accurate when dragging files to bookmarks, especially by people with little experience in the use of computer. How is possible to disable the drag&drop bookmarks creation? Or ideally should be planning to implement the drag & drop mode only if you are running in conjunction with the press of a key on the keyboard ..

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• OnClickListener - x,y location of event?

  - by Mark

  Hi, I have a custom view derived from View. I'd like to be notified when the view is clicked, and the x,y location of where the click happened. Same for long-clicks. Looks like to do this, I need to override onTouchEvent(). Is there no way to get the x,y location of the event from an OnClickListener instead though? If not, what's a good way of telling if a motion event is a 'real' click vs a long-click etc? The onTouchEvent generates many events in rapid succession etc. Thanks

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• Android - Unity3D: setVisibility(View.VISIBLE) crashes

  - by Kazoeja

  I have a unity project and I use a Android (java) plugin to get camera data. I draw this on a TextureView. I want to hide/show this view when I press a button in unity. But my app crashes when I setVisibility onCreate UnityPlayer.currentActivity.addContentView(texView, new FrameLayout.LayoutParams(400, 400)); java: public void HideVideo() { //Hide view _TextureView.setVisibility(View.INVISIBLE); } Is there an extra function I need to call, or may I only call it on certain times? None of these thins work, they all make my app crash. _TextureView.setVisibility(View.INVISIBLE); _TextureView.setActivated(false); _TextureView.setAlpha(0); _TextureView.setTranslationY(-1000);

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• Doesn't Matlab optimize the following?

  - by kloop

  I have a very long vector 1xr v, and a very long vector w 1xs, and a matrix A rxs, which is sparse (but very big in dimensions). I was expecting the following to be optimized by Matlab so I won't run into trouble with memory: A./(v'*w) but it seems like Matlab is actually trying to generate the full v'*w matrix, because I am running into Out of memory issue. Is there a way to overcome this? Note that there is no need to calculate all v'*w because many values of A are 0. EDIT: If that were possible, one way to do it would be to do A(find(A)) ./ (v'*w)(find(A)); but you can't select a subset of a matrix (v'*w in this case) without first calculating it and putting it in a variable.

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• What happens when a OSGi service using JNI is unregistered while in use?

  - by schngrg

  As I understand, OSGi services can be unregistered anytime, including when they are in use. Consider an OSGi service which internally makes a long-running JNI call. And while that JNI call is executing, the service is unregistered by OSGi. Will the JNI call be allowed to finish or terminated mid-way? What if it was just a normal non-jni long running Java call? Will that call be allowed to finish execution or will OSGi terminate everything immediately and unregister? What is the expected behavior in such a case? Does the expected behavior depend on if the service was loaded using a 'tracker' or not? SG

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• Overriding a function in an instance [on hold]

  - by MustSeeMelons

  Is it possible to override a function by instance? For example, A and B are both instances of MyClass. I have a function Action(), and I want to specify its implementation for each instance. To be more specific - the class is a Button, and the function is Clicked(). I don't want to derive a class 5 times to create 5 different button actions. Was thinking of something like it's handled in Java Swing: create a button, add code for the button press and use the button.

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• Cant install Ubuntu. How do you format a Windows HDD

  - by heldeman

  I have an HP 630, and would like to install Ubuntu. All goes well until the point where you have to choose how you want Ubuntu installed. I choose on the whole HDD, I want Windows off the HDD. I press enter and about 5 seconds later the CD tray open and the computer reboots. This happens over and over. How do I format this Window HDD completely to install Ubuntu 13.04. I have tried 3 different CD's and the same thing happens each time.

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• PHPmyedit: custom URL for 'ADD' button [on hold]

  - by user2952715

  I'm currently working with phpmyedit and I need to access to the 'Add' (new record) function using a URL. As this script (phpmyedit) is dinamically generated, when I press the 'Add' button, I get the form to fill but the URL has no changes. How can I create some custom URL for the ADD button, that allows me to access externally and also pass parameters through the URL? Here is how PHPmyedit set up the navigation buttons by default: http://opensource.platon.sk/projects/doc.php/phpMyEdit/html/configuration.navigation.html Any help will be really appreciated.

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• Monitor resolution can't be saved

  - by Iztok

  Today I installed Lubuntu 13.10 on Vmware Player (inside Windows). I change the Monitor setting (resolution) from default 800x600 to 1680x1050. It works. Beside Apply, I also press Save button. "Changes are saved" appears. But - after restart, the resolution is again in 800x600. I also opened /etc/xdg/lxsession/Lubuntu/autostart and add (it was empty before) one line: @xrandr --mode 1680x1050 After restart the default resolution is back again. Any idea?

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• Syanptics Touchpad Won't Re-enable

  - by user71607

  I disabled my Synaptics touchpad while a key on my keyboard and now I can't get it to work again. When I press that key again it says the touchpad turns back on but will not work at all. Rebooting doesn't help, and I tried installing touchpad-indicator but when I try to enable from there it says that it enables, but the icon remains like it's disabled. The odd thing is that it works on the lock screen so I know the drivers aren't messed up, it's just a setting. Also, the touchpad works on guest mode but still nothing on my account. I tried using gconf to set the touchpad_enable to true and it worked, it sure set it. Doesn't make a difference though, my touchpad is still useless. Terminal commands I've used: gconftool-2 --set --type boolean /desktop/gnome/peripherals/touchpad/touchpad_enabled true synclient Touchpadoff=0 modprobe psmouse

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• How do I install latest NVIDIA drivers from the .run file?

  - by Shahe Tajiryan

  This is what I am trying to do. I downloaded the latest driver for my VGA from http://www.nvidia.com. The installation needs the X11 to be shut down, so I log out of my account, then press CTRL+ALT+F1, then log in with my username and password, then run the command sh NVIDIA-Linux-x86_64-285.05.09.run in every possible way, I have even tried CHMODing the package with 777 permissions, but still I'm getting the sh: can't open NVIDIA-Linux-x86_64-285.05.09.run error. Any help would be greatly appreciated.

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• JPA Native Query (SQL View)

  - by Uchenna

  I have two Entities Customer and Account. @Entity @Table(name="customer") public class Customer { private Long id; private String name; private String accountType; private String accountName; ... } @Entity @Table(name="account") public class Account { private Long id; private String accountName; private String accountType; ... } i have a an sql query select a.id as account_id, a.account_name, a.account_type, d.id, d.name from account a, customer d Assumption account and customer tables are created during application startup. accountType and accountName fields of Customer entity should not be created. That is, only id and name columns will be created. Question How do i run the above sql query and return a Customer Entity Object with the accountType and accountName properties populated with sql query's account_name and account_type values. Thanks

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• Problem with Initializing Consts

  - by UdiM

  This code, when compiled in xlC 8.0 (on AIX 6.1), produces the wrong result. It should print 12345, but instead prints 804399880. Removing the const in front of result makes the code work correctly. Where is the bug? #include <stdio.h> #include <stdlib.h> #include <string> long int foo(std::string input) { return strtol(input.c_str(), NULL, 0); } void bar() { const long int result = foo("12345"); printf("%u\n", result); } int main() { bar(); return 0; } Compilation command: /usr/vacpp/bin/xlC example.cpp -g

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• What technologies are you using even though they are embarassingly out of date?

  - by tomjen

  What old technology that should have been replaced long ago do you still use regularly, and why?

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• Creating a multi-row "table" as part of a SELECT

  - by Chad Birch

  I'm not really sure how to describe my question (thus the awful title), but it's related to this recent question. The problem would be easily solved if there was some way for me to create a "table" with 4 rows as part of my SELECT (to use with NOT IN or MINUS). What I mean is, I can do this: SELECT 1, 2, 3, 4; And will receive one row from the database: | 1 | 2 | 3 | 4 | But is there any way to receive the following (without using UNION, I don't really want a query that's potentially thousands of lines long with a long list)? | 1 | | 2 | | 3 | | 4 |

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