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• Errors when attempting to install vim on Ubuntu 12.04

  - by Anup

  I have installed Ubuntu 12.04 in my computer few days back. from then i tried to install few programs through Ubuntu software center but it showed that no internet connection even though i was connected to internet. Then i came to know that vi editor will be required to set the system configuration in which i will be able to save my password and proxy. apart from that i also tried to install the programs through terminal but still same problem occurred as it says this is not a candidate for install. i tried to install Vim using command sudo apt-get instal Vim-nox but it shows that broken package and showed many failures. please help me out of this.... thank you

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• Unique keys for Sphinx along three vectors instead of two

  - by Brendon Muir

  I'm trying to implement thinking-sphinx across multiple 'sites' hosted under a single rails application. I'm working with the developer of thinking-sphinx to sort through the finer details and am making good progress, but I need help with a maths problem: Usually the formula for making a unique ID in a thinking-sphinx search index is to take the id, multiply it by the total number of models that are searchable, and add the number of the currently indexed model: id * total_models + current_model This works well, but now I also through an entity_id into the mix, so there are three vextors for making this ID unique. Could someone help me figure out the equation to gaurantee that the id's will never collide using these three variables: id, total_models, total_entities The entity ID is an integer. I thought of: id * (total_models + total_entities) + (current_model + current_entity) but that results in collisions. Any help would be greatly appreciated :)

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• I need to hire a web developer but I'm not sure which qualifications/skills they should have to do what I see in my head. Any help?

  - by Beau

  I'm looking to develop a simple image editor wherein a user can cycle through multiple layers (6-10) of images to develop a unique avatar. For example, the initial image layer will be a 2D character of their choice, mostly void of any accessories. The next image layer would be a shirt, another pants, another jewelry etc. I like the idea of frontend HTML5 so it can be a web app compatible across most platforms, but I'm lost on the backend requirements of such a project. #noob Any help would be greatly appreciated.

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• Maya Animated Character export for XNA 4.0 problem

  - by FahidK

  To begin with, I'm trying to export an animated character in .fbx format from Maya 2013 to XNA 4.0 In Maya, The Model has a basic rig and the animations are in clips made in the Trax editor. so the issue i'm having is after selecting the model and the root joint and then hitting export in .fbx format, for some reason when i open the exported .fbx file the joint system is detached from the model with no animation. Btw, i have the animations in clips so that they can be called in code, for example "run","walk","attack". So, what can i do to solve this problem? Thank you.

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• Finding recurrence relations of an algorithm

  - by Roarke

  I'm reading my algorithms text book, and I'm reading about recurrence relations and finding the algorithms big O complexity. I run across this line "In the case of the merge-sort algorithm, we get the recurrence equation: t(n) = b if n < 2 = 2t(n/2) +bn if n >= 2 for b > 0 my response was "how the heck did we know that?!?!" So i'm wondering if there is a systematic approach, or just a logical way of getting these recurrence relations from the algorithms can some one explain where the b and the two 2's come from?

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• Not recognize JDK after installation in ubuntu 12.10

  - by HFDev

  I did these steps without error: 1-JDK path : Downloads/jdk-6u37-linux-x64.bin 2-Commands in Terminal : mkdir Programs cd Programs bash ../Downloads/jdk-6u37-linux-x64.bin ln -s jdk-6u37-linux-x64 jdk 3-Set JAVA_HOME and Path: in HomeView MenuShow Hidden Files Then open .bashrc in text editor. I added the following lines to end of file. export JAVA_HOME=$Home/Programs/jdk export PATH=:$JAVA_HOME/bin:$PATH --------------------------------------------------------------------------------------- This is the result of executing the command echo $JAVA_HOME : /Programs/jdk This is the result of executing the command echo $PATH : :/Programs/jdk/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games1 ---------------------------------------------------------------------------------------- And problem is : This is the result of executing the command java -version : The program 'java' can be found in the following packages: * default-jre * gcj-4.6-jre-headless * gcj-4.7-jre-headless * openjdk-7-jre-headless * openjdk-6-jre-headless Try: sudo apt-get install

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• How can I tell how a panel item was set up

  - by 4dummies

  I need to do some major surgery on a user account that has somehow sustained configuration damage to the point window decorations are gone, some apps don't listen to the keyboard, etc etc. I run xfce4 sessions. There's a panel on the top of the screen that has applications that I put there once upon a time. I know how to do that, sort of. But I don't remember the details of what I specified. And I'm unaware of an app for the panel that's like the menu editor that lets you see and manipulate an item that's already there. I want to do that because I want to re-do this stuff in a different account. Or possibly do a dotfile transplant on this account and re-edit to include the stuff I'm used to.

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• Oracle's Director NoSQL Database Product Management talks with ODBMS.ORG

  - by thegreeneman

  I was pinged by one of my favorite database technology sites today, ODBMS.ORG - informing that Dave Segleau, the Director of Oracle NoSQL Database product management spent some time talking with their editor Roberto Zicari about the product.   Its a great interview and I highly recommend the read.  I think its important to understand the connectivity that Oracle NoSQL Database (ONDB) has with BerkeleyDB, as it says a lot about the maturity of ONDB as it relates to data integrity and reliability.  BerkeleyDB has been living the NoSQL life since the beginning of this transition embracing the right tool for the job approach to data management.  Several of the biggest names in NoSQL ( e.g. LinkedIn's Voldemort ) built their NoSQL scale-out solutions leveraging the robust BerkeleyDB storage engine under their distribution architectures.  Oracle commercializing the same via ONDB makes perfect sense given the demonstrated need for this category of technology.

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• How do I disable window move with alt + left mouse button in GNOME Shell?

  - by artfulrobot

  There are lots of posts on this about Unity, this is about gnome-shell As with other posters, I use apps (Inkscape in particular) that uses Alt-Click and Alt-drag. Gnome-shell is grabbing this off me and thus disabling features in the application. I have tried using ccsm's Move plugin - you can turn this off and you still get Alt-drag window moving. using gconf editor to change /apps/metacity/general/mouse_button_modifier - this has no effect AFAICS. It's really hindering me. Otherwise I find gnome-shell a really productive environment.

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• Best choise of gui platform/framework for 3d development [closed]

  - by Miguel P

  The title pretty much says it all, so I'm developing a 3d engine for Directx 11, and it's going good so far. I started using .net forms as a GUI, but then(Of curiosity), i jumped to MFC, and the app looked great, but in my perspective, MFC is badly written, and it's too complicated, meaning that some things just took forever, while it would have taken a few seconds in .net forms. But my real question is: If i want to make an Editor for a 3d scene, where directx renders in the form( This was accomplished in .net forms), what would be the best choise of gui platform/framework? MFC,.net forms, Qt, etc....

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• UDK/ UnrealScript class interaction? HUD advice?

  - by Holly

  Beginner basics requested here, While i'm familiar with the basics of OOP programming i've just started looking as UnrealScript for a game i had made in the UDK editor up to now. I have a class that extends UTHUD and another that extends UDKPAWN. I have the pawn destroyed when its been shot 3 times and some basic helloworld text displaying in my HUD but i'm completely lost as to how one would get some sort of feedback between the two classes going on? What i would like to do to start off, is have some text that says something like "Amount of baddies killed: 0" Displayed on the HUD which would then increment each time the player destroyed one of my pawns. I'm sorry if this is an inappropriate question but i've never really worked within a framework like this before and wasn't sure where to go for help to get my footing. All advice appreciated!

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• Custom extensible file format for 2d tiled maps

  - by Christian Ivicevic

  I have implemented much of my game logic right now, but still create my maps with nasty for-loops on-the-fly to be able to work with something. Now I wanted to move on and to do some research on how to (un)serialize this data. (I do not search for a map editor - I am speaking of the map file itself) For now I am looking for suggestions and resources, how to implement a custom file format for my maps which should provide the following functionality (based on MoSCoW method): Must have Extensibility and backward compatibility Handling of different layers Metadata on whether a tile is solid or can be passed through Special serialization of entities/triggers with associated properties/metadata Could have Some kind of inclusion of the tileset to prevent having scattered files/tilesets I am developing with C++ (using SDL) and targetting only Windows. Any useful help, tips, suggestions, ... would be appreciated!

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• php preg_match pattern to extract a specific information, regex

  - by Michael

  I need to extract a specific Id from a html document but the problem is that the id must not "be used". Here is the html content http://pastebin.com/wF2dx8JZ As you may see there are different html blocks . Some of them contain the "Used" word so I need to extract only the first id which is not used. Basically I can write a simple pattern like : $pattern = "/javascript:tw(.*))/"; preg_match_all($pattern, $content, $matches); $id = $matches[1][0]; However in this case I'm also getting the "ids" which are used so I don't know how to exclude them from the equation . Any idea would be highly appreciated.

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• Slerping rotation mirrors

  - by Esa

  I rotate my game character to watch at the target using the following code: transform.rotation = Quaternion.Slerp(startQuaternion, lookQuaternion, turningNormalizer*turningSpeed/10f) startQuaternion is the character's current rotation when a new target is given. lookQuaternion is the direction the character should look at and it's set like this: destinationVector = currentWaypoint.transform.position - transform.position; lookQuaternion = Quaternion.LookRotation(destinationVector, Vector3.up); turningNormalizer is just Time.deltaTime incremented and turningSpeed is a static value given in the editor. The problem is that while the character turns as it should most of the time, it has problems when it has to do close to 180 degrees. Then it at times jitters and mirrors the rotation: In this poorly drawn image the character(on the right) starts to turn towards the circle on the left. Instead of just turning either through left or right it starts this "mirror dance": It starts to rotate towards the new facing Then it suddenly snaps to the same angle but on other side and keeps rotating It does this "mirroring" so long until it looks at the target. Is this a thing with quaternions, slerping/lerping or something else?

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• Where do my programs get installed?

  - by Micah

  Coming from windows I'm used to having everything installed in c:\program files\company\product. On Ubuntu I'm totally stumped. It seems like everything I install winds up somewhere different. Somethings are in /bin some in /home/myuser and others in /etc or /usr. I can't seem to figure this out. In particular I'm trying to find where they're located so I can either setup shortcuts on the task bar or associate them with other programs (like my greasemonkey editor) but I'm not having any luck.

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• How to disable the Mount notification in Gnome 3.4?

  - by Thompson

  How to disable those annoying notifications when you plug a new disk in, or connect to a network and so on.... I know that if I add a device to a mount script they will be mounted on boot thus not showing me the notification, which I did for my hard drives, but it doesn't help with all those flash disks I have... I can't add them all that would be silly. I looked at: How can I disable gnome-shell's notification area? ... but they didn't help, since the code was different I also looked at configuration editor, but I think it can only disable auto-mount when inserted, it doesn't disable notification...

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• Enemy Spawning method in a Top-Down Shooter

  - by Chris Waters

  I'm working on a top-down shooter akin to DoDonPachi, Ikaruga, etc. The camera movement through the world is handled automatically with the player able to move inside of the camera's visible region. Along the way, enemies are scripted to spawn at particular points along the path. While this sounds straightforward, I could see two ways to define these points: Camera's position: 'trigger' spawning as the camera passes by the points Time along path: "30 seconds in, spawn 2 enemies" In both cases, the camera-relative positions would be defined as well as the behavior of the enemy. The way I see it, the way you define these points will directly affect how the 'level editor', or what have you, will work. Would there be any benefits of one approach over the other?

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• Application use on website

  - by Palmer

  Is there a good way to run a C# application on clientside in lieu of JavaScript? I have done some front end work with JavaScript and backend C# for web developing at an old job, but I am interested in hosting a website myself soon. I have a C# application I would like to be open source, but before people care to download I'd like them to be able to use it. At its basic level it's a simple text editor, but there's much more to it in the nitty gritty. I could write it in JavaScript, but it would require me to keep documentation and up to date changes on JavaScript and C# in that case. I was thinking of creating an AJAX panel and somehow loading my winform application into a frame, but I don't know how or what words to google because I've never done it before except AJAX.

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• How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender

  - by user827992

  I would like to export a 3D model with each part having a name or a label if you will. For example i would like to export a model of an human body and name each part in specifics vertex groups like: left hand, right hand, right foot, head, ears, ... and you got the idea; so i can have a single 3D model that i can explode in various parts if needed. If there is a better technique about how to mark vertex groups in a 3D file please share your solution. As 3D editor i use Blender.

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• What is a Histogram, and How Can I Use it to Improve My Photos?

  - by Eric Z Goodnight

  What’s with that weird graph with all the peaks and valleys? You’ve seen it when you open Photoshop or go to edit a camera raw file. But what is that weird thing called a histogram, and what does it mean? The histogram is one of the most important and powerful tools for the digital imagemaker. And with a few moments reading, you’ll understand a few simple rules can make you a much more powerful image editor, as well as helping you shoot better photographs in the first place. So what are you waiting for? Read on!  What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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• Random/Procedural vs. Previously Made Level Generation

  - by PythonInProgress

  I am making a game (called "Glory") that is a top-down explorer game, and am wondering what the advantages/disadvantages of using random/procedural generation vs. pre-made levels are. There seems to be few that i can think of, other than the fact that items may be a problem to distribute in randomly generated terrain, and that the generated terrain may look weird. The downside to previously made levels is that I would need to make a level editor, though. I cannot decide what is better to use.

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• Given two lines on a plane, how to find integer points closest to their intersection?

  - by Lukasz Lew

  I can't solve it: You are given 8 integers: A, B, C representing a line on a plane with equation A*x + B*y = C a, b, c representing another line x, y representing a point on a plane The two lines are not parallel therefore divide plane into 4 pieces. Point (x, y) lies inside of one these pieces. Problem: Write a fast algorithm that will find a point with integer coordinates in the same piece as (x,y) that is closest to the cross point of the two given lines. Note: This is not a homework, this is old Euler-type task that I have absolutely no idea how to approach. Update: You can assume that the 8 numbers on input are 32-bit signed integers. But you cannot assume that the solution will be 32 bit.

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• SSIS Denali CTP1 Source Assistant

  - by andyleonard

  I like the new Data Flow Source Assistant in SSIS Denali. The default view is shown above, with the "Show installed only" checkbox checked. When not checked, the list of Source types changes: In previous versions of SSIS, I rarely created connections in the Connection Managers pane - I usually hit a New button in either a Source or Destination Adapter, or in a task. It was just easier letting the task or adapter pick the proper Connection Manager editor. This is handy and a time-saver. :{>...(read more)

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• Find Out Which Websites are Tracking You Across the Web

  - by Taylor Gibb

  Have you ever wondered where the websites you visit send your information? Well, if you have, read on to find out about this new extension from Mozilla that will tell you how you are tracked across websites. Editor’s Note: Most websites use cookies of some type, and all online advertisers do, including the advertisers on this site. You’re welcome to block cookies if that’s a worry. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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• Which mobile device is appropriate as a utility tool for a web master?

  - by Kayle

  Basically, I'm looking for a device to use on the road and I would prefer to not have to sit down for the majority of the tasks (which rules out netbooks, in my mind). I'm also hoping to spend less than $500. This is what I'd like to "capably" be able to do on the device: Browse the web in non-mobile format, flash is a plus Email, chat, etc Have access to a decent text editor and ftp OR a browser that supports BESPIN/ACE Some sort of SSH support I'm looking at rooted Android phones and iPhone/iPads... though the phone aspect is only icing (it would be cool to consolidate the two devices and have net access through cell networks, but I'm not married to the idea). Are there cheap linux tablets that are ready for prime-time yet? I suppose that would be ideal. All suggestions welcome!

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