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• Memory Management/Embedded Management in C

  - by Sauron

  Im wondering if there is a set or a few good books/Tutorials/Etc.. that go into Memory Management/Allocation Specifically (or at least have a good dedicated section to it) when it comes to C. This is more for me learning Embedded and trying to keep Size down. I've read and Learned C fine, and the "standard" Learning books. However most of the books don't spend a huge amount of time (Understandably since C is pretty huge in general) going into the Finer details about whats going on Down Under. I saw a few on Amazon: http://www.amazon.com/C-Pointers-Dynamic-Memory-Management/dp/0471561525 http://www.amazon.com/Understanding-Pointers-C-Yashavant-Kanetkar/dp/8176563587/ref=pd_sim_b_1 (Not sure how relevant this would be) A specific Book for Embedded that has to do with this would be nice. But Code Samples or...Heck tutorials or anything about this topic would be helpful!

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• Writing to a structured buffer with a compute shader (D3D11)

  - by Vertexwahn

  I have some problems writing to a structured buffer. First I create a structured buffer that is filled with float values beginning from 0 to 99. Afterwards a copy the structured buffer to a CPU accessible buffer is made to print the content of the structured buffer to the console. The output is as expected (Numbers 0 to 99 appear on the console). Afterwards I use a compute shader that should change the contents of the structured buffer: RWStructuredBuffer<float> Result : register( u0 ); [numthreads(1, 1, 1)] void CS_main( uint3 GroupId : SV_GroupID ) { Result[GroupId.x] = GroupId.x * 10; } But the compute shader does not change the contents of the structured buffer. The source code can be found here (main.cpp): https://bitbucket.org/Vertexwahn/cmakedemos/src/4abb067afd5781b87a553c4c720956668adca22a/D3D11ComputeShader/src/main.cpp?at=default FillCS.hlsl: https://bitbucket.org/Vertexwahn/cmakedemos/src/4abb067afd5781b87a553c4c720956668adca22a/D3D11ComputeShader/src/FillCS.hlsl?at=default

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• Install package with dependencies offline

  - by ArtemStorozhuk

  Right now I have 2 computers: Has connection to the internet and has installed package A. Doesn't have connection to the WEB. On this PC I need to install package A. I decided to download all needed packages using first PC and transfer them to the second PC via USB. I have searched how to get all needed packages for some deb installation and here's what I've found. But when I run: apt-get --print-uris --yes install A | grep ^\' | cut -d\' -f2 > downloads.list on first PC I got empty file because this package is already installed there (and I don't want to uninstall it). Also package A is very complicated and depends on package B which depends on package C and package C is not installed on the second PC. So how can I download all needed packages? Or is there any other way of installing it? Thanks for the help.

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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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• Switching Programming Languages

  - by no spoon

  Hi I'm a senior level Delphi developer looking for move into either C# or possibly Java roles. I have around 8 years of development experience of which pretty much all of it is in Delphi, I have very little commercial experience in C# and no commercial experience in Java. I have about 6 months worth of academic experience in both Java and C# from some University papers I took a 4 years ago and use these languages for hobby projects, so I know the languages I just don't have the commercial experience to back it up. Given that I'm too over qualified for a junior role but do not have the commercial experience for even an intermediate role how does one go about changing jobs?

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• Printer "ripping" forever (network printer)

  - by Julien Gorenflot

  Since I installed Ubuntu 11.10, printing is a disaster. I did not have the problem with Lucid Lynx (Ubuntu 10.04), but maybe it just comes from the fact that someone else had installed it for me, and possibly it configured better. When I print a pdf, even 2 pages, my printer (SHARP MX 2300N) stays in rippen for hours. "Rippen" is a German word, not really sure how to translate. Google translate says, The English equivalent is "Rib". And eventually, sometimes, the pages finally get printed. But in between my whole floor is very angry because they also need the printer. Additionally, I don't always have the whole day for waiting for my pages. I remember that when printing I used to be asked if I wanted to reduce transparency effects, which does not seem to happen anymore after I installed Ubuntu 11.10. Is there any connection? Not sure, because I don't think it was for pdf files.

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• Skills for RAD developer.

  - by Janis Peisenieks

  I am about to embark on an exquisite journey. I have applied for an event, where in span of 48 straight hours, strangers meet, throw around some great ideas, decide on teams, and make a working prototype of IT project. All within 48 hours. I anticipate, that this will be very skill and ability intensive experience, and I want to be prepared. Since i will need to develop my part of the code quickly, I have a following question: What would be the most needed skills for these 48 hours? I do know, that things like proper documentation, version control and such are pretty important for a full fledged application/program/web development, but for this span of frantic coding? Background: I am a web developer, so answers applicable to web development would be more appreciated than others.

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• Software consultancy or in-house developement?

  - by JefClaes

  What are the benefits and drawbacks of working as an in-house developer versus working as a consultant and vice versa? I am pretty sure both breeds can be found on these forums and I hope you are willing to share your experience. Edit: Let me clarify the question. I wonder how the experience is like being a developer. For example: Being an in-house developer, you are able to learn from your mistakes. Being a consultant is often more challenging, because there is more variety in the problems you have to solve. PS: Although I realise that this is a subjective question, I don't necessarily see it as one of those bad-subjective questions.

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• Can't disable giant cursors (from accessibility mode)

  - by jackweirdy

  I've just installed ubuntu 12.04 from a livecd. Out of curiosity, I enabled the accessibility options for people who are hard of sight. As you can guess this does the usual stuff of inverting colours, increasing text size and making the cursor larger. Having finished the installation I booted into the new system to find accessibility mode was still installed. From the lightdm login screen I disabled this which switched colours and text size back to default, however it's only the pointer cursor that has gone back to default. To put it another way, the "hand" icon that you get when hovering over a link, the cursor which appears when typing and pretty much every other cursor on the system are still large. I've looked on the Universal Access menu, but there's no option to disable large cursors. I've tried toggling accessibility on and off but to no avail.

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• System Settings icons missing

  - by pst007x

  Is there any way to reset the System Settings Control Panel page? The Control Panel was fine, but the for no apparent reason, PRIVACY, BACKGROUND and a host of other icons have vanished... My system seems pretty messed up after the upgrade... Shutdown, Reset, and Logout from the menu no longer work either... However, I can launch the Privacy panel from the terminal: activity-log-manager and it runs... so why is this, and others, now missing from the System Setting Control Panel? I have checked and: activity-log-manager-control-center is installed Is there a config file I can check, or a setting in Gconf where the list of icons are referenced? I have run - in desperation - sudo apt-get purge unity* sudo apt-get purge ubuntu* sudo apt-get autoremove Run Gconf-cleaner and Janitor then re-installed all packages Still the same issue....?

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• What is (are) the most useful technique/visualization for overall project status?

  - by Wayne Werner

  For reasons "above my pay grade", we're developing an issue/project tracking system where I work (similar to Trac, FogBugz, etc). The managers want a useful tool to be able to track the overall health of the project (e.g. How much time left, how are we performing vs estimates) and one of the features that has been requested is some type of critical path support and visualization. The logic explained to me is that they want to be sure that at least the most important pieces of the project are currently being worked on. The initial idea was that we would create task-based dependencies. My understanding of project management tells me that this kind of granular approach is unnecessary - having milestones with specific deadlines/dependencies is much more useful. I would like to know what are the most useful techniques and "pretty pictures" you've seen/used for project development. Having objective data would be best, but somewhat subjective data is helpful too.

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• Rendering scaled-down card images

  - by user1065145

  I have high-quality SVG card images, but they drastically lose their quality when I downsize them. I have tried two ways of rendering cards (using Inkscape and Imagemagics): 1) Render SVG to high-res PNG and resize it then: inkscape -D --export-png=QS1024.png --export-width=1024 QS.svg convert QS1024.png -filter Lanczos -sampling-factor 1x1 -resize 71x QS71.png 2) Render SVG to image of proper size at once: inkscape -D --export-png=QS71.png --export-width=71 QS.svg Both approaches generate blurry card images, which looks even worse than old Windows cards. What are the best way to generate smaller card images from SVG sources and not to loose their quality a lot? UPDATE: I am using Inkscape to render SVG - PNG and ImageMagick then to downsize PNG. I've tried using convert -resize with couple of filters (Lanczos/Mitchell/etc), but result was pretty much the same. Original: 71x raster:

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• how to generate number pattern in triangular form

  - by Vignesh Vicky

  I want to print this pattern like right angled triangle 0 909 89098 7890987 678909876 56789098765 4567890987654 345678909876543 23456789098765432 1234567890987654321 I wrote following code # include<stdio.h> # include<conio.h> void main() { clrscr(); int i,j,x,z,k,f=1; for ( i=10;i>=1;i--,f++) { for(j=1;j<=f;j++,k--) { k=i; if(k!=10) { printf("%d",k); } if(k==10) { printf("0"); } } for(x=1;x<f;x++,z--) { z=9; printf("%d",z); } printf("%d/n"); } getch(); } what is wrong with this code? when i check manually it seems correct but when compiled gives different pattern

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• ethernet doesn't work

  - by Grig Tanasescu

  I know that it may look pretty stupid, but that's it. I have a ethernet connection with my mom's computer, and is her's who's the source or anyway it is called. I'm new at linux, but i had before linux mint 13 and the ethernet didn't work 'till a friend went to network settings-options he clicked "add" somewhere and and introduced some numbers, after he looked somewhere in my mom's computer. I've tried neither linux nor ethernet until now. Please help and sorry for my english. P.S. I'm just 13 and I don't know much about computers so, please, talk to me as you would with a completely idiot. Thanks

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• How do you measure the effectiveness of your hiring & interview process?

  - by Yevgeniy Brikman

  Although I've seen many discussions on how to do an interview and develop your brand, I haven't seen many discussions on how to determine if your hiring & interview process is actually working well. I think this question has two parts: How do you know your hiring process is getting the right candidates to apply and go through the interview process? Of the people that you end up interviewing, how can you tell that the ones you choose to hire are better (on average) than those that you rejected? I suppose the "extreme" cases - when you end up with a superstar or a total dud - are pretty obvious, but what about the rest?

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• eGalax Touchscreen not working Jolicloud 1.2

  - by craigsmith86

  I have an eGalax touchscreen on an Acer Aspire One running Jolicloud 1.2 I have had success getting this touchscreen to work correctly on ubuntu 10.04NBR, 11.04 and Kubuntu 12.04 and Puppy Linux, so I am pretty happy with how it SHOULD be done. However, I cannot get it to calibrate correctly or remember calibration settings. I have installed the eGalax utility (all available versions) and it does not recognize the screen. Xinput_calibrator works but the config cannot be made permanent. Problems I have identified: -Joli doesn't have an xorg.conf file and does not use xorg.conf.d for evdev configuration -Setting configs through Hal doesn't work anymore The best I can get is a poorly adjusted touchscreen with a reversed Y axis. Any help greatly appreciated

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• Should vendors have an express queue for people who have a clue? What passes for support today?

  - by Greg Low

  It's good to see some airports that have queues for people that travel frequently and know what they're doing. But I'm left thinking that IT vendors need to have something similar. Bigpond (part of Telstra) in Australia have recently introduced new 42MB/sec modems on their 3G network. It's actually just a pair of 21MB/sec modems linked together but the idea is cute. Around most of the country, they work pretty well. In the middle of the CBD in Melbourne however, at present they just don't work. Having...(read more)

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• How are generics implemented?

  - by greenoldman

  This is the question from compiler internals perspective. I am interested in generics, not templates (C++), so I marked the question with C#. Not Java, because AFAIK the generics in both languages differ in implementations. When I look at languages w/o generics it is pretty straightforward, you can validate the class definition, add it to hierarchy and that's it. But what to do with generic class, and more importantly how handle references to it? How to make sure that static fields are singular per instantiations (i.e. each time generic parameters are resolved). Let's say I see a call: var x = new Foo<Bar>(); Do I add new Foo_Bar class to hierarchy? Update: So far I found only 2 relevant posts, however even they don't go into much details in sense "how to do it by yourself": http://www.jprl.com/Blog/archive/development/2007/Aug-31.html http://www.artima.com/intv/generics2.html

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• Internet Timeouts with TP-Link TL-WN821N wireless usb stick - existing solutions dont work

  - by Sheena

  I'm running Ubuntu12.04 and I'm trying to get a TP-Link TL-WN821N to work. The solution from Internet Timeouts with TP-Link TL-WN821N v2 wireless usb stick didn't work for me. Neither has anything else... I've installed rtl8192cu as per instructions I found elsewhere to no avail. The symptoms I am experiencing are: When I plug in the device the PC can see and connect to wireless networks fine. The network I'm using has internet access and the signal strength is pretty strong. I can't ping and I can't browse the internet (timeout). Any ideas? I'm not sure what the next step would be or what information would be useful at this point.

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• Searching for a Calendar Application That Meets the Following Criteria

  - by Navarr

  My Step Father is starting his own company, and he gets the wonderful life of having to deal with multiple clients. He needs a calendar system that can do the following: Can be updated from iCal (I'm pretty sure this just means CalDAV support) Needs to be able to show different clients the details of whats on his calendar for them, while showing other client's arranged times as only busy Wants to show it in a professional way, preferably on his own website. I was looking at Google Calendar, but alas it doesn't seem to actually support it like I thought it would. He was looking at MobileMe, but its simply public. Is there a calendar app or PHP application that can be installed on his server that can do this?

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• Too much to learn, so little time

  - by Phobia

  Okay, so I'm a java developer (or at least I think I am),and also a student at the same time I want to get a job when I graduate,I'll be graduating in a year or so (hopefully) (Note: my major has nothing to do with programming) Now, I'm between a rock and a hard place I also want to nail the foundations to become a good software developer. I want to be able to write programs that solve problems,not just glue code The software market in my country for java developers is just a few developers working with Java EE (struts,spring,hibernate....etc) I'm currently learning C++ with this book. I've also watched most of the 1st lecture of this course and I understood pretty much everything I watched To sum it up, I have three options Learn Java EE Learn C++ Learn Scheme Which is better for me at this point?

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• New to CG shader programming, what program should I use to write and test them?

  - by Notbad

  I have started witting some shaders. First ones were fairly easy to write in notepad but now I need something with a bit more meat. I have checked rendermonnkey that seems to support CG but it is really old and don't know if it is a good option. On the other hand there exist this FX Composer 2.0 but it seems somthing that could really distract me from learning shaders because it seems a pretty deep program. Are there any other possibilities? There's a really nice alternative to write shaders named ShaderToy but just supports GLSL. Any information will be really welcomed. Thanks in advance.

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• Identify my terminal session that started a particular process

  - by Sam

  I'm using Gnome on Ubuntu. I often have 8-20 terminal sessions open and in some of them I have su'd to a different user. The specific problem that caused me to write this query happens when using git status, but this is more general issue. git status will tell me I have an uncontrolled file .foo.java.swp. This means that in one of my terminal sessions I have vi open on foo.java. I need a script or tool that would tell me in which terminal session that vi is running. I can do a "ps aux | grep vi" to pretty easily find the pid of the particular vi. It would be nice if the tool highlighted the terminal on my task bar in some way. Thanks. -Sam

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• Project management without experience

  - by Raven13

  I'm a web developer who is part of a three-man team that has been tasked with a rather large and complex development project. Other than some direction and impetus from management, we're pretty much on our own to develop the new website. None of us have any project management experience nor do my two coworkers seem like they would be interested in taking on that role, so I feel like it's up to me to implement some kind of structure to the development process in order to avoid issues down the road. My question is: what can I do as a developer without project managment experience to ensure that our project gets developed successfully and avoid the pitfalls of developing a project without a plan?

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• Desktop interface crashes after software updates

  - by N.C. Weber

  Recently, after installing Ubuntu software updates on the evening of December 7th, 2012, my desktop interface crashes regularly leaving me with a command line screen with a long string of automated commands showing (I assume what goes on behind the pretty desktop). At first, I thought it was only crashing whenever I played DirectX games in WINE, but now it crashes if I open the native Firefox browser or if it's doing nothing at all but sitting there. Apport attempts to report the bugs after restart, but often they crash as well. I've done a SMART check on the hard drive, and everything report OK. No read errors, no bad sectors. I am using an Acer Extensa 4620Z Memory: 2.0 GiB Processor: Intel Pentium Dual CPU T2370 @ 1.73GHz x 2 GraphicsL: Intel 965GM x86/MMX/SSE2 OS: Ubuntu 12.10 32-bit Disk: 116.0 GB with 33.4 GB Available

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