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  • apt changelog for to-be installed packages

    - by ithkuil
    GUI update-manager is able to show the "changelog" of packages to-be installed (not downloaded yet). I also found out how to provide the .changelog files in the right place for update-manager to show them, and now I'm happy since I'm able to tell my clients that they can see changelogs of my custom packages directly from their gui. Unfortunately I'm not able to find any command line tool to do the same thing and that would be more useful on servers. From what I saw it seems that this convention (putting .changelog files directly alongside the .deb files in the apt repo) is a ubuntu specific extension. There are some debian resources (the reprepro man page for example) which point on a different way to store changelogs online, http://packages.debian.org/changelogs Does anybody know if there already exists a tool like apt-cache to show the changelogs from packages which are not yet installed (nor downloaded) ?

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  • Why did Git become so popular?

    - by Jungle Hunter
    Almost every article you read comparing Git and Mercurial it seems like Mercurial has a better command line UX with each command being limited to one idea only (unlike say git checkout). But at some point Git suddenly became super popular and literally exploded. Source: Debian What happened in 2010-01 that things suddenly changed. Looks like GitHub was founded earlier than that - 2008. Edit: Git 1.7.0 seems to be released at the same time: January 2012. Here are the 1.7.0 release notes and the file history with the corresponding dates.

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  • Corrupted File System on Dual HD/Dual Boot System

    - by Troy
    I have the following system set up: 2 drives, 1 TB each, one with Windows 7 and the other with what used to be Ubuntu 11.x After an update my system became corrupted and now the file system is apparently corrupt. The Ubuntu drive is /dev/sda2, the Windows 7 is /dev/sda1. I've tried fsck /dev/sda2 -t ext3 and that does nothing. I'm not sure what to do at this point. I don't even mind wiping the /dev/sda2 drive clean, so it will at least accept a completely new installation of Ubuntu. I just don't know how to do that. Please help. Thank you

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  • Find vertices of a convex hull

    - by Jeff Bullard
    I am attempting to do this within CGAL. From a 3D point cloud, find the convex hull, then loop over the finite facets of the convex hull and print each facet's vertices. It seems like there should be a straightforward way to do this; I would have expected that 3D polyhedra would own a vector of facet objects, each of which in turn would own a vector of its edges, each of which in turn would own a vector of its vertices, and that their would be some access through this hierarchy using iterators. But so far I have been unable to find a simple way to navigate through this hierarchy (if it exists).

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  • How to enable true remote login

    - by Scán
    I don't quite know how these things are called, so a search did not product any help. I've got two computers, a desktop and a netbook. The netbook is really weak, and there's hardly any fun doing work with it, especially after ubuntu software swallows so much cpu power for nothing. But my desktop is good, but uncomfortably positioned. So I know you can use any linux system as a server to give logins. I want to be able to login and work on my desktop, from my netbook. No VNC, no SSH, full X-server, I want to be able to choose "Login on Desktop" in my login menu on the netbook and have everything as if I was there. I hope I could make my point. Is it possible in a local network? And if so, how can I easily set it up?

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  • How do I Fallback to Older DirectX Versions?

    - by smoth190
    I had a feeling that it would be easier to tackle this problem before I got too deep into development (unless, of course if that's a bad idea/the hard way, please inform me...). I'm creating my game to be run ideally on DirectX 11, however, I want to offer it on DirectX 10, and I'm unsure if it is worth offering it for DirectX 9 for XP users. I'm not too sure how this fallback even works, as I can't find many articles on the internet. If someone could give me an in-depth article, that would be great. I've read a little about how since DirectX11 is completely absent on XP, it is hard to even check for support. Someone mentioned having multiple applications for each version, is this a good idea? Thanks to anyone who can point me in the right direction here.

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  • Storing Attendance Data in database

    - by Ali Abbas
    So i have to store daily attendance of employees of my organisation from my application . The part where I need some help is, the efficient way to store attendance data. After some research and brain storming I came up with some approaches . Could you point me out which one is the best and any unobvious ill effects of the mentioned approaches. The approaches are as follows Create a single table for whole organisation and store empid,date,presentstatus as a row for every employee everyday. Create a single table for whole organisation and store a single row for each day with a comma delimited string of empids which are absent. I will generate the string on my application. Create different tables for each department and follow the 1 method. Please share your views and do mention any other good methods

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  • OpenGL: Filtering/antialising textures in a 2D game

    - by futlib
    I'm working on a 2D game using OpenGL 1.5 that uses rather large textures. I'm seeing aliasing effects and am wondering how to tackle those. I'm finding lots of material about antialiasing in 3D games, but I don't see how most of that applies to 2D games - e.g. antisoptric filtering seems to make no sense, FSAA doesn't sound like the best bet either. I suppose this means texture filtering is my best option? Right now I'm using bilinear filtering, I think: glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); From what I've read, I'd have to use mipmaps to use trilinear filtering, which would drive memory usage up, so I'd rather not. I know the final sizes of all the textures when they are loaded, so can't I somehow size them correctly at that point? (Using some form of texture filtering).

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  • Why should we use low level languages if a high level one like python can do almost everything? [closed]

    - by killown
    I know python is not suitable for things like microcontrolers, make drivers etc, but besides that, you can do everything using python, companys get stuck with speed optimizations for real hard time system but does forget other factors which one you can just upgrade your hardware for speed proposes in order to get your python program fit in it, if you think how much cust can the company have to maintain a system written in C, the comparison is like that: for example: 10 programmers to mantain a system written in c and just one programmer to mantain a system written in python, with python you can buy some better hardware to fit your python program, I think that low level languages tend to get more cost, since programmers aren't so cheaply than a hardware upgrade, then, this is my point, why should a system be written in c instead of python?

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  • Problems with HP laptop

    - by Jan
    So the problem is...every time I reboot or shutdown laptop and when the laptop is booting again I get screen (before loading OS) that HP discovered overheating and system went into hibernate. But the point is that laptop is not overheating nor going into hibernate by itself. Also becouse of the hybrid graphic cards I cannot install additional drivers. Desktop resolution and all works perfectly but I cannot use unity 3D also openGL doesn't work as it should (with cairo docks) As i've read some posts, people say that switcheero doesn't work on 12.04 so I haven't tried it.

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  • Pair Programming: Pros and Cons

    - by O.D
    Hi I need some experience reporting from the ones who have done pair programming,i notice that lots of people recommend that but my experience was that at one point its more efficient to set alone, think and then write code than to talk with the other programmer (which can be very annoying to other programmers in the same office), do you agree to this? and if yes can you mention situations where pair programing is less efficient than traditional programing? Actually im more interested in Cons than in Pros, but if its your own experience i would like to read both, the Cons and the Pros. I would like to read what you think about the Programmer who does'nt have the keyboard, what can he do in the meanwhile other than talking about the concept? or checking the code on the screen? Thank you

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  • How to build a great relationship with your colleagues

    - by Maria Sandu
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-family:"Calibri","sans-serif"; mso-ascii- mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi- mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} When you start new job, you worry about your performance, about being able to do what the manager asks you to do, but you also worry about the relations with your colleagues. How will you get along with them? What if they don’t like you? Have you ever felt you’re „the new guy” and your colleagues have already their own way of talking one to each other, their own jokes? It’s a common feeling and can actually become stressful. I am Norbert, Middleware Presales Intern in Hungary and I’ve been working within Oracle for only 1 month. Joining such a big company has been a challenge from many perspectives. One of them was adapting with the environment and getting to know all my colleagues. You know it’s quite difficult to introduce yourself, to try to liaise with them and find some common topics, so I felt very lucky and comfortable when my manager introduced me to all of my colleagues. It was easier to accommodate and we basically we had a starting point for our discussions. We started to talk about what my position means, for how many years they’ve been within Oracle, other Oracle related topics, but also more personal stuff like what they do after work. Having this opportunity of talking with all of them helped me introduce myself in a proper way and actually I told them many things about myself. Networking wasn’t my best skill, but these first days were really helpful from a network point of view. What else can you do to get along with your colleagues? One second thing I consider as being really helpful in networking is asking work-related questions. For instance, when you don’t know how to do something or don’t understand it, asking one of your colleagues will also help you to make a connection with him and you could easily continue the discussion with some other topics which are more personal. It’s a very effective strategy and in a company like Oracle people are very willing to help you with your tasks and perform at a high level. If you see your colleagues going to lunch, you should join them. It will help you become part of their community, finding out what’s new in their lives, you’ll, step-by-step, take part in their conversations and be up to date with the hot topics they talk about. One other opportunity of becoming part of your colleagues’ community are the internal events. Subscribing to the local free time activities mailing list is very useful for finding out information about when they’re going out and have a drink or attending all sorts of events. For instance, this is how I’ve found out about a party within Oracle that most of the employees here attend. It’s a wonderful opportunity for chatting and make a stronger connection to some of them. How important is attending these events? Think about how much time you spend at work. You’d like to enjoy your work and the environment, so getting along with your colleagues is a nice thing to have. I recently attended a corporate party whose purpose was to facilitate the interaction and communication between employees. It was a real success and we had a lot of fun, especially because it was a costume party.  All the fancy dresses and funny clothes we wore made the atmosphere really enjoyable. It was easy to liaise with colleague with whom I had never interacted with before. There was a friendly spirit among us, chatting about personal stuff and about various pleasant things. Working in an international company is not an easy thing because you interact with many people and they have different styles, but all these opportunities of informal interaction are a good way to adapt to the new working environment.

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  • What is the need for 'discoverability' in a REST API when the clients are not advanced enough to make use of it anyway?

    - by aditya menon
    The various talks I have watched and tutorials I scanned on REST seem to stress something called 'discoverability'. To my limited understanding, the term seems to mean that a client should be able to go to http://URL - and automatically get a list of things it can do. What I am having trouble understanding - is that 'software clients' are not human beings. They are just programs that do not have the intuitive knowledge to understand what exactly to do with the links provided. Only people can go to a website and make sense of the text and links presented and act on it. So what is the point of discoverability, when the client code that accesses such discoverable URLs cannot actually do anything with it, unless the human developer of the client actually experiments with the resources presented? This looks like the exact same thing as defining the set of available functions in a Documentation manual, just from a different direction and actually involving more work for the developer. Why is this second approach of pre-defining what can be done in a document external to the actual REST resources, considered inferior?

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  • Pair Programming: Pros and Cons

    - by O.D
    I need some experience reporting from the ones who have done pair programming, I noticed that lots of people recommend it but my experience was that at one point it's more efficient to sit alone, think and then write code than to talk with the other programmer (which can be very annoying to other programmers in the same office), do you agree to this? and if yes can you mention situations where pair programming is less efficient than traditional programming? Actually, I'm more interested in Cons than in Pros, but if it's your own experience I would like to read both, the Cons and the Pros. I would like to read what you think about the Programmer who doesn't have the keyboard, what can he do in the meanwhile other than talking about the concept? or checking the code on the screen?

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  • Drawing shapes dynamically on an image through web browser

    - by Tom Beech
    We have a scenario where we create floor plans of locations when we visit. The floor plan is finally shown on the web. It's come to the point now where we want to show floor plans but have a key with various items on them, when an item on the key is clicked, the image should highlight all the areas of the floorplan that have that specific item. I guess we're looking for some sort of open standard javascript lib to deal with SVG (has to work pre IE9 so pure SVG wont cut it) and the floor plans have to be able to be created through a .net application to be deployed on the web. I'd rather stay away from flash if at all possible to be honest. Below are a few conceptual images of what we're trying to achieve.

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  • Bless doesn't fix white boot screen boot delay for single-boot Xubuntu 14.04 on Macbook 4,1

    - by elephant
    I still have a 30-second delay on the white boot-up screen before Xubuntu loads after trying various combinations of bless --device as recommended here: https://help.ubuntu.com/community/MactelSupportTeam/AppleIntelInstallation#Avoid_long_EFI_wait_before_GRUB I wonder if anyone has experienced this before, or can point me to some good steps for troubleshooting this issue? I have cycled my macbook dozens of times, it would be great to be able to boot quicker. I am single-booting Xubuntu 14.04 (no Mac OSX partitions or any other OS, just a GRUB partition at sda1, a main partition at sda2, and a swap at the end of the drive). Suggestions very appreciated.

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  • With a small development team, how do you organize second-level support?

    - by Lenny222
    Say, you have a team of 5 developers and your inhouse customers demand a reasonable support availability of say 5 days a week, 9am-6pm. I can imagine the following scenarios: the customers approach the same guy, every time. Downside: single point of failure, if the guy is unavailable. each developer is assigned one week of support duty. Downside: how to you distribute the work evenly in times of planned (vacation) and unplanned (sickness) unavailability? each developer is assigned one day of support duty. Downside: similar to above, but not as bad. a randomly picked developer handles the support request. Downside: maybe not fair, see above. What is your experience?

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  • RGB values from image into a one dimension array in c#

    - by velocityxyz
    I was wondering if there is a was a way to read rgb values from an image into a one dimensional array in C#. If it doesnt make sense, in java I would do something like this. int[] pixels; BufferedImage image = getClass().getResourceAsStream("asdfghjkl.png"); int w = image.getWidth(); int h = image.getHeight(); pixels = new int[w * h]; image.getRGB(0, 0, w, h, pixels, 0, w) ; So any help would be great, or if you can point me in the right direction, that'd be great

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  • Quels sont vos astuces pour passer outre les limitations des EDI ? Comme marquer des arrêts dans un code volumineux sans points d'arrêt

    Quels sont vos trucs et astuces pour passer outre les limitations des EDI ? Comme marquer des arrêts dans un code volumineux sans points d'arrêt Les applications contenant des fichiers de source avec des lignes de code volumineux sont très souvent sujet à des dysfonctionnements. Les développeurs souhaitent alors retrouver rapidement le bloc ou la ligne qui ne s'exécute pas correctement. Plusieurs techniques et outils permettent d'effectuer le débogage d'un programme et d'observer son fonctionnement pour apporter des corrections de bugs ou faire des optimisations. Parmi eux, les points d'arrêt (breakpoints) sont très utilisés. Un point d'arrêt peut être vu comme un signal qui indiq...

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  • Are there any good html 5 mmo design tutorials?

    - by Dwight Spencer
    Hey all. I got a rather inspired after playing gaia online's zOMG and wanted to revive an old project idea I've had laying around for a few years now. I'm looking to work with html5 (ie canvas, svg based sprites, & WebGL) to build a graphical web based MUD/MMO. Obviously, this is a new take on an old idea and after searching google I haven't really turned up many good resources. But does anyone have any tutorials or other resources to point me in the right direction?

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  • Serverside memory efficiency and threading for a turn based game

    - by SkeletorFromEterenia
    Im programming on a turn based war-game for some years now (along with the engine) and Im having quite a hard time at figuring out what the games server architecture should look like, since most game server architecture articles I found focus either on FPS oder MMOGs, which doesn't really fit since I want many matches with 1- 16 players on my server, with each match being played in turn based mode. My chief concern is memory usage, since the most basic approach of loading every game that is being played completely into RAM should be quite inefficient, so is there a suitable strategy for selecting only the needed bits and loading them? Another question I got is how to design the threading on the server, since I think using only a single thread could be a problem due to the fact that the game or part of it might have to be loaded from the database. I would be very happy if you could share your knowledge or point me to material on this topic.

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  • Difference left/right super button

    - by Erik Keemink
    When I press my left super key the gnome shell appears and when I press the right super key it does not. Moreover pressing right super + T does open a terminal at once, but when using left super I have to press the t twice, when I press the t only once it is similar to just pressing the t without holding super left. This last point also occurs with other shortcuts that I defined (like super+L, super+E), but not with super+up/down/left/right. What I want is to press either super key to get the gnome shell and to use either super key in combination with T to open a terminal immediately (and similar with other shortcuts). I use Ubuntu 12.04 LTS and the gnome 3 shell.

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  • Convert Docx or Odt to Pdf

    - by luxifer
    Hi there, I need to find a way to convert docx or odt files to pdf on a linux web server. Therefore I'm not willing to install openoffice.org for obvious reasons. I've tried Google but it failed for me, so I'm here :-) I can't imagine there's no other solution to this problem than to install a huge chunk of binaries given that a) there are (or at least should be) lot's of packages which can read docx or at least odt and b) there are as many packages which can write pdf files What am I missing here? scratching head Regards, luxifer ps edit: I don't want to use a web service - neither free or paid edit 2: at this point it would also help to convert the docx back to doc so I could use wvpdf to generate the pdf... edit 3: of course it would also help if i could do search and replace on a doc file in the first place; or xps for that matter

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  • Fast pixelshader 2D raytracing

    - by heishe
    I'd like to do a simple 2D shadow calculation algorithm by rendering my environment into a texture, and then use raytracing to determine what pixels of the texture are not visible to the point light (simply handed to the shader as a vec2 position) . A simple brute force algorithm per pixel would looks like this: line_segment = line segment between current pixel of texture and light source For each pixel in the texture: { if pixel is not just empty space && pixel is on line_segment output = black else output = normal color of the pixel } This is, of course, probably not the fastest way to do it. Question is: What are faster ways to do it or what are some optimizations that can be applied to this technique?

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  • How to use Mercurial's LargeFiles extension? [migrated]

    - by DuncanBoehle
    I use Mercurial for game development, and I'm trying to use the LargeFiles extension included in Mercurial 2.0 to keep track of large binary assets. Unfortunately there isn't a whole lot of documentation on the extension, so I'm not sure how people are expected to use it. For example, is there any way to safely clean out the .hg/largefiles directory? If I'm on the tip revision, and expect to always have internet access, then I don't need the old versions of largefiles cluttering up the repository, since that's the whole point of using the LargeFiles extension. Also, how do I have more fine-grained control over where the largefile store is? I can only assume that it's created somewhere on the computer that ran hg init, but I have no idea about the details. Thanks!

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