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• Run Tests in Folder

  - by Tomas Mysik

  Hi all, today we would like to show you another minor improvement we have prepared for NetBeans 7.2. Today, let's talk a little bit about testing. This minor improvement will be useful especially for users who have a lot of unit tests (it means all of us, right? ;) - just right click on any folder underneath Test Files node and you will notice: The result is as expected - all the tests from the given folder are run: That's all for today, as always, please test it and report all the issues or enhancements you find in NetBeans BugZilla (component php, subcomponent PHPUnit).

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• Classes as a compilation unit

  - by Yannbane

  If "compilation unit" is unclear, please refer to this. However, what I mean by it will be clear from the context. Edit: my language allows for multiple inheritance, unlike Java. I've started designing+developing my own programming language for educational, recreational, and potentially useful purposes. At first, I've decided to base it off Java. This implied that I would have all the code be written inside classes, and that code compiles to classes, which are loaded by the VM. However, I've excluded features such as interfaces and abstract classes, because I found no need for them. They seemed to be enforcing a paradigm, and I'd like my language not to do that. I wanted to keep the classes as the compilation unit though, because it seemed convenient to implement, familiar, and I just liked the idea. Then I noticed that I'm basically left with a glorified module system, where classes could be used either as "namespaces", providing constants and functions using the static directive, or as templates for objects that need to be instantiated ("actual" purpose of classes in other languages). Now I'm left wondering: what are the benefits of having classes as compilation units? (Also, any general commentary on my design would be much appreciated.)

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• How to avoid movement speed stacking when multiple keys are pressed?

  - by eren_tetik

  I've started a new game which requires no mouse, thus leaving the movement up to the keyboard. I have tried to incorporate 8 directions; up, left, right, up-right and so on. However when I press more than one arrow key, the movement speed stacks (http://gfycat.com/CircularBewitchedBarebirdbat). How could I counteract this? Here is relevant part of my code: var speed : int = 5; function Update () { if(Input.GetKey(KeyCode.UpArrow)){ transform.Translate(Vector3.forward * speed * Time.deltaTime); } else if(Input.GetKey(KeyCode.UpArrow) && Input.GetKey(KeyCode.RightArrow)){ transform.Translate(Vector3.forward * speed * Time.deltaTime); } else if(Input.GetKey(KeyCode.UpArrow) && Input.GetKey(KeyCode.LeftArrow)){ transform.rotation = Quaternion.AngleAxis(315, Vector3.up); } if(Input.GetKey(KeyCode.DownArrow)){ transform.Translate(Vector3.forward * speed * Time.deltaTime); } }

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• Movement on the X an Z axis are combined?

  - by Magicaxis

  This is probably a stupid question, but I'm trying to simply move a 3D object up, down, left, and right (Not forward or backward). The Y axis works fine, but when I increment the object's X position, the object moves BOTH right and backwards! when I decrement X, left and forwards! setPosition(getPosition().X + 2/*times deltatime*/, getPosition().Y, getPosition().Z); I was astonished that XNA doesnt have its own setPosition function, so I made a parent class for all objects with a setPosition and Draw function. Setposition simply edits a variable "mPosition" and passes it to the common draw function: // Copy any parent transforms. Matrix[] transforms = new Matrix[block.Bones.Count]; block.CopyAbsoluteBoneTransformsTo(transforms); // Draw the model. A model can have multiple meshes, so loop. foreach (ModelMesh mesh in block.Meshes) { // This is where the mesh orientation is set, as well // as our camera and projection. foreach (BasicEffect effect in mesh.Effects) { effect.EnableDefaultLighting(); effect.World = transforms[mesh.ParentBone.Index] * Matrix.CreateRotationY(MathHelper.ToRadians(mOrientation.Y)) * Matrix.CreateTranslation(mPosition); effect.View = game1.getView(); effect.Projection = game1.getProjection(); } // Draw the mesh, using the effects set above. mesh.Draw(); } I tried to work it out by attempting to increment and decrement the Z axis, but nothing happens?! So using the X axis changes the objects x and z axis', but changing the Z does nothing. Great. So how do I seperate the X and Z axis movement?

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• Get and set accessors do they protect different instances of a variable?

  - by Chris Halcrow

  The standard method of implementing get and set accessors in C# and VB.NET is to use a public property to set and retrieve the value of a corresponding private variable. Am I right in saying that this has no effect of different instances of a variable? By this I mean, if there are different instantiations of an object, then those instances and their properties are completely independent right? So I think my understanding is correct that setting a private variable is just a construct to be able to implement the get and set pattern? Never been 100% sure about this.

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• Ubuntu 12.04 Responsiveness Extremely Slow on Nvidia 8800?

  - by lynxie

  Just installed 12.04... This is the first time I run Ubuntu with the Unity UI, not a pleasant experience. The responsiveness is extremely slow (10s after a mouseclick), the screen flickers, etc, all right after logging in. Switching the display driver from Nvidia current to post-release doesn't help at all. What now? Can't go back, but Ubuntu is useless to me right now. What can I do? (The system is a Intel 4x2.4Ghz with 4Gb RAM and a Nvidia 8800.)

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• How to make a jar file run on startup & and when you log out?

  - by RanZilber

  I have no idea where to start looking. I've been reading about daemons and didn't understand the concept. More details : I've been writing a crawler which never stops and crawlers over RSS in the internet. The crawler has been written in java - therefore its a jar right now. I'm an administrator on a machine that has Ubuntu 11.04 . There is some chances for the machine to crash , so I'd like the crawler to run every time you startup the machine. Furthermore, I'd like it to keep running even when i logged out. I'm not sure this is possible, but most of the time I'm logged out, and I still want to it crawl. Any ideas? Can someone point me in the right direction? Just looking for the simplest solution.

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• "Unmet Dependencies" problem when trying apt-get install

  - by GChorn

  Anytime I try to install python packages using the command: sudo apt-get install python-package I get the following output: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-headers-generic : Depends: linux-headers-3.2.0-36-generic but it is not going to be installed linux-headers-generic-pae : Depends: linux-headers-3.2.0-36-generic-pae but it is not going to be installed linux-image-generic : Depends: linux-image-3.2.0-36-generic but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). This seems to have started when these same three packages showed up in Ubuntu's Update Manager and kicked an error when I tried to install them there. Based on the suggestion in the output above, I tried running: sudo apt-get -f install But this only gave me several instances of the following error: dpkg: error processing /var/cache/apt/archives/linux-image-3.2.0-36-generic_3.2.0-36.57_i386.deb (--unpack): unable to create `/lib/modules/3.2.0-36-generic/kernel/drivers/net/wireless/ath/carl9170/carl9170.ko.dpkg-new' (while processing `./lib/modules/3.2.0-36-generic/kernel/drivers/net/wireless/ath/carl9170/carl9170.ko'): No space left on device Now maybe I'm way off-base here, but I'm wondering if the error could be coming from the "No space left on device" part? The thing is, I'm running Ubuntu as a VirtualBox VM but I've got it set to dynamically increase its virtual hard drive space as needed, so why am I still getting this error? Here's my output when I use dh -f: Filesystem Size Used Avail Use% Mounted on /dev/sda1 6.9G 5.7G 869M 88% / udev 494M 4.0K 494M 1% /dev tmpfs 201M 784K 200M 1% /run none 5.0M 0 5.0M 0% /run/lock none 501M 76K 501M 1% /run/shm VB_Shared_Folder 466G 271G 195G 59% /media/sf_VB_Shared_Folder When I perform sudo apt-get -f install and the system says, After this operation, 192 MB of additional disk space will be used. Does that mean 192 MB of my virtual machine's current memory, or 192 MB on top of the rest of my free space? As I said, my machine normally dynamically allocates additional memory from the host machine, so I don't see why there would be memory restrictions at all...

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• Getting trayer to work with dual screen setup

  - by Ikke

  I'm using XMonad as my window manager, and want to use trayer as a icon panel for things like nm-applet. The problem was that the panel wouldn't appear on the top of the screen. If I set it to the bottom it just appeared. After a lot of trying, I found out it is because my xorg.conf is setup for dualscreens, and probably the trayer panel is spawned outside my view (I currently have only a single screen, but I switch a lot). After manualy tweaking the xorg.conf file to allow for just one screen, the panel appears on the right spot. These are the things I had to modify: Section "Monitor" Identifier "0-LVDS" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1366x768" Option "TargetRefresh" "60" Option "Position" "0 0" # Was 1280 256 Option "Rotate" "normal" Option "Disable" "false" EndSection SubSection "Display" Viewport 0 0 Virtual 1366 768 # Was 2646 2646 Depth 24 EndSubSection The problem is ofcourse that I can't use my dual screen setup anymore. Is there a way to force trayer on the right position even with the dualscreen setup?

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• Best way to solve the game 'bricolage'

  - by maggie

  I am trying to solve the following game http://www.hacker.org/brick/ using some kind of AI. The target of this game is to finally clear the board by clicking on groups of at least 3 bricks of the same color and removing them. If a group is disappearing the remaining bricks above will fall down or be moved left if a column got no bricks left. The higher the level - more colors and larger board. I already guessed that a pure bruteforce approach wont scale nice for higher levels. So i tried to implement a monte carlo like approach which worked ok for the first levels. But i am still not confident i will make the maximum level of 1052 with this. Currently i am stuck @~ level 100 :) The finding of the solution takes too much time... Hoping that there is a better way to do this i read some stuff about neural networks but i am really at the beginning of this. Before becoming obsessed by ANNs i want to be sure it is the right way for my problem. So my question is: Does it make any sense to apply an ANN to this game? Any suggestions?

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• Sprite batching in OpenGL

  - by Roy T.

  I've got a JAVA based game with an OpenGL rendering front that is drawing a large amount of sprites every frame (during testing it peaked at 700). Now this game is completely unoptimized. There is no spatial partitioning (so a sprite is drawn even if it isn't on screen) and every sprite is drawn separately like this: graphics.glPushMatrix(); { graphics.glTranslated(x, y, 0.0); graphics.glRotated(degrees, 0, 0, 1); graphics.glBegin(GL2.GL_QUADS); graphics.glTexCoord2f (1.0f, 0.0f); graphics.glVertex2d(half_size , half_size); // upper right // same for upper left, lower left, lower right graphics.glEnd(); } graphics.glPopMatrix(); Currently the game is running at +-25FPS and is CPU bound. I would like to improve performance by adding spatial partitioning (which I know how to do) and sprite batching. Not drawing sprites that aren't on screen will help a lot, however since players can zoom out it won't help enough, hence the need for batching. However sprite batching in OpenGL is a bit of mystery to me. I usually work with XNA where a few classes to do this are built in. But in OpenGL I don't know what to do. As for further optimization, the game I'm working on as a few interesting characteristics. A lot of sprites have the same texture and all the sprites are square. Maybe these characteristics will help determine an efficient batching technique?

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• Installed nvidia graphics driver (current, 8800GTX) has issues, how do I disable/uninstall it?

  - by Craig

  I installed the restricted nvidia graphics driver (current) on my computer, then restarted to finish the install. Upon reboot I got some prompt about there being an X server problem, It told me to try auto-fixing or something, none of its options worked, they all failed horribly and caused the computer to crash immediately on selecting any of them. I decided to re-install. Again I got in, downloaded updates, and installed the driver. This time upon boot the X-server immediately crashes and im brought to tty1. If I hit ctrl+alt+F7 I see a beige-background prompt says the usual about checking battery state, pulse audio etc., you see right before the x-server starts. According to X (if I do sudo startx) there are no displays, and the nvidia graphics driver is not working. First off, how do I set ubuntu back to the default driver (I have only a CLI right now -.-), then how do I install a more appropriate nvidia driver

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• How can I make these Google Analytics numbers add up? (Frequency & Recency)

  - by Joe

  Here's a screen shot from Google Analytics. It's my last months traffic, and this is the 'Frequency & Recency' tab. So I believe that if I add up all the numbers under 'visits' I get 11,432, which is right, and if I add up all the numbers under 'pageviews' I get 14,785 and that's right as well. But, let's take the last line - the last line appears to say that 71 people, visited more than 51 times each, and they viewed a total of 243 pages between them - that doesn't seam to make any sense - did they view 9% of a page each time? So that's clearly wrong - what's the error in my calculation?

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• Is there a certain way that I have to include a library and it's license?

  - by leaf68

  I know this may be a dumb question, but I'm only 15 so I don't really know how the legal part of it works. When I choose a .dll to be included in my project, Visual Studio only includes the .dll file with my project (of course) so I just copy the license and stick it in a folder called licenses. But now, I'm going to be making a program for a contest so I need to make sure I have the licenses done right or I'll get disqualified. So is there any specific location I have to keep the licenses in my project, is there a way for Visual Studio to automatically copy the license the way it does with .dll files and is there anything else I have to watch out for legally? PS: If it matters the libraries I'm planning on using right now are WriteableBitmapEx and AvalonDock Thanks

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• DIrect videos and slideshows fullscreen from another display

  - by neurino

  I have 3 displays: 1 control display I can see 2 40" Full HD displays I can't see my need is to play videos and presentations fullscreen on the two 40" screens while being able to control them from the control display. So far I am able to achieve this with a cumbersome set of keyboard shortcuts like: open VLC on control display send to left display with Win + Shift + Left go fullscreen with f and more combinations to restore, get VLC on control display etc. This is really error prone and not professional. Also I wish I have a media player and a slideshow player that can: send the same video / slideshow to the two 40" displays at the same time send two different videos / slideshows, one each 40" display having all controls on the central display, the only one I can see. Any advice welcome, thank you for your support.

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• How to tell Wine that I have changed CD when mounting them virtually on a netbook with no CD drive?

  - by glenatron

  I have been trying to catch up with some of the old games from way back that are about right for my little Aspire One netbook through Wine. I've run into a problem Baldurs Gate, however, which is that I can't change CD. Obviously, I don't have a CD drive, so I have copied the CD content onto an external hard drive and I'm using a mount command with the loopback option to persuade the game that the CD is present. This allowed installation to work correctly and works fine to run it and to play the content from the first CD. However, when the game asks for CD2, I'm stuck. If I mount the CD2 ISO to the CD Rom path it doesn't appear to respond, whether or not I have first unmounted CD1. When I ask Wine to show me the CD drive it contains the right data, but it seems as though whatever signal would be interpreted by Windows to mean the CD drive has been closed isn't being sent. Does anyone know of a way to do this, or am I barking up the wrong tree and there is something else I need to do?

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• Ubuntu 12.04 appearance

  - by lightnight

  I have just updated my old Ubuntu 11.04 to the 12.04 version and I really dislike the new appearance. Is there anyway I can go back to the old appearance? Here are some examples of the things I would like to change: the omnipresent orange colour (for example, colour of the folders, colour of the little x on the top right of the window etc.); used to be blue. The icons on the right vertical bar are unreadable: the dropbox icon has become a light grey shapeless blob, the battery icon does not indicate, as it did before, when electricity is plugged in and when it isn't. everything is just grey and orange (I chose the Radiance theme, the other ones are even worse). There used to be a lot of options choosing the shape of the windows and so on, where has all that gone? Thanks for your help!

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• Help to understand directions of sprites in XNA

  - by 3Dkreativ

  If I want to move a sprite to the right and upwards in a 45 degree angle I use Vector2 direction = new Vector2(1,-1); And if the sprite should move straight to right Vector2 direction = new Vector2(1,0); But how would I do if I want another directions, lets say somewhere between this values? I have tested with some other values, but then the sprite either moves to fast and or in another direction than I expected!? I suspect it's about normalize!? Another thing I have problem with to understand. I'm doing a simple asteroids game as a task in a class in C# and XNA. When the asteroids hit the window borders, I want them to bounce back in a random direction, but I can't do this before I understand how directions and Vector2 works. Help is preciated! Thanks!

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• After deleting log files, Ubuntu server still saying there is no space

  - by Mark

  My Ubuntu server has stopped due to a lack of disk space. I deleted some log files which has grown huge very quickly. But df -h still shows I have no space left. When I run du -sh /* I can see that I should have plenty of disk space left after deleting the logs. I ran lsof +L1 and it brought up two files: /var/log/mail.log and /var/log/mail.err. These are two logs I had deleted. I restarted apache, postfix and mysql (mysql wont restart because of lack of disk space, it think) but still df -h shows no space.

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• How do I allow Ubuntu to use more space on my computer?

  - by anonymous

  Ubuntu currently won't use more than 4GiBs on my computer, but I need more space. My computer can hold much more than 4GiBs. How do I allow Ubuntu to use more? Please give step-by-step instructions in plain English. Update: I'm referring to my Ubuntu operating system. I installed it using Wubi through Microsoft Windows. I deleted Wubi from my Windows desktop after installation. All I want is to expand my Ubuntu operating system. I plan to gradually transition from Windows to Ubuntu and so I'll need to transfer more files and programs from Windows to Ubuntu in the future. Right now, I already need more GiBs for Ubuntu. I can barely use Ubuntu right now because there's almost no space left. I simply want Ubuntu to use what space I need it to use. People, please quit complicating this issue and inform me how to make Ubuntu use more space.

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• Can I resize my partitions?

  - by Tim

  Following is a screenshot of my current partitions shown by gparted Note that the partitions on the right of /dev/sda3, without labels on them in the figure, are /dev/sda6 (for /home), /dev/sda7 (for /), unallocated, and /dev/sda5 (for swap), from left to right, form altogether the primary partition /dev/sda4. I would like to resize the partitions, such that some unused space from /dev/sda7 (for /) and the small unallocated space can be moved to /dev/sda3 (for /windows-d) and make it larger. If it is possible, I wonder how to do that? Thanks and regards!

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• Auto restart server if virtual memory is too low

  - by Sukhjinder Singh

  There are quite number of software running on my server: httpd, varnish, mysql, memcache, java.. Each of them is using a part of the virtual memory and varnish was configured to be allocated 3GB of memory to run. Due to high traffic load which is 100K, our server ran out of memory and oom-killer is invoked. We've to reboot the server. We have 8GB of Virtual Memory and due to some reason we cannot extend to larger memory. My question is - Is there any automated script, which will monitor how much virtual memory left and based upon certain criteria, lets say if 500MB left than restart the server automatically? I do know this is not the proper solution but we have to do it, otherwise we don't know when server will get OOM and by the time we know and restart the server, we lost our visiting users.

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• Scroll bar for vim(curses-based one, not gvim)?

  - by xiaq

  As a Linux user, I have been quite comfortable with CLI and TUI tools, but I miss the little scrollbar present in almost every GUI program. It has always been easier for me to know how long the file is and where I am from the scrollbar instead of "9752 lines, 24%". What I expect is a ASCII scrollbar that looks like | | | | # # # | | | and I can configure to appear on the left or right (and if on the left, the relative position to line numbers and fold marks). Is there already a Vim plugin to do this, or how can I write my own one? Vim's plugin framework doesn't seem to support such UI modifications directly.

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• I cant use wasd and arrow keys at the same time?

  - by William

  I am having this promblem where if I press one key on either one of the arrow keys or wasd, I cant press that direction on the other one unless that key is the only key of wasd or the arrow keys being pressed at that time. For example: I can press D and RIGHT, but if I do, I cant press W,A,S,LEFT,UP and DOWN. If I press A and S then I cant press LEFT and Down. Does anyone have a solution to that problem, cause I have searhed around, and found no similar problem.

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• Alternatives to Google Sites for a personal web site?

  - by Oleg2718281828

  I'd like to find a hosting solution for my personal, fairly low-traffic, web site. I think Google Sites would suit me perfectly, but I've heard horror stories about Google's algorithms shutting down all your accounts on a whim, with no right of appeal, so I'm naturally worried, because I don't want to lose my Gmail. Edit I'm talking about cases like this one: I tried contacting somebody at Google support ("Surely they should have a support department, right?" Nope, wrong!) (The victim managed to regain access to his Gmail account when his case went "viral", but he never got an explanation as to why he had been locked out in the first place) Are there good, preferably free, alternatives to Google Sites and what are their PROs and CONs? One requirement is that I should be able to point the DNS (foobar.com) to it.

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