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• Canada vs Norway

  During the winter Olympics, I had a little bet with Sondre Bjells.  Sondre is the RD for Olso, Norway, a rising rock star in the .NET world and a very great guy.  The bet was that if Canada would win Gold against Norway in the man curling final, I would wear something funny and Norwegian like a Viking hat at Mix while Sondre would wear a Canadian jersey. Well, guess who won? You know what?  I glad that Norway didnt win because I fear I would have had to wear the famous Norwegian...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How to get pngcrush to overwrite original files?

  - by DisgruntledGoat

  I've read through man pngcrush and it seems that there is no way to crush a PNG file and save it over the original. I want to compress several folders worth of PNGs so it would be useful to do it all with one command! Currently I am doing pngcrush -q -d . *.png then manually cut-pasting the files from the tmp directory to the original folder. So I guess using mv might be the best way to go? Any better ideas?

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• NVIDIA Geforce gt 555m driver install problem

  - by mir

  I recently installed ubuntu 12.04 on my asus N55SF, which runs nvidia geforce gt 555m and an integrated graphics, via optimus but after installation i found no such thing on ubuntu. i went o nvidia website and installed the driver from there(ver 259.59 i guess) after reboot, i was stuck at 640x480 resolution and my card was still undetected i reinstalled ubuntu but this time i installed bumblebee, but the system settings still shows the graphics as 'unknown' i dont know whether the driver has been installed or not, but from the 'unknown' i figure its not there. when i run sudo nvidia-settings i get this msg "You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run nvidia-xconfig as root), and restart the X server." however i can run the settings page by sudo nvidia-settins -c :8 i just want to know why ubuntu hasnt still detected the gpu? is it because bumblebee disables it? and i forgot one v important thing..I AM A NOOB :(

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• What good Social Networking Site solutions there is?

  - by ZetsubouWebmaster

  What good free Social Networking Site solutions there are? I tried many options but most of them are either too complicated, too simple, or just do not work... I tried: Dolphin, DZOIC-Handshakes, elgg, Oxwall, SocialEngine, and some plugins for wp and other cms. I don't need much, just: groups, chats, forums, profiles, PM, photos, pages, comments, search, statistics. Most of which included in pretty much every CMS out there... but not all... So, what good solutions there are? Also I don't mind paying some money (i guess no more then 200$), but I'd prefere if it was a free open source engine. Of course it should be php+mysql based.

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• Qt Certification Exams

  - by karlphillip

  I'm wondering about doing a Qt Certification Exam this year, but I'm not 100% sure the investment is worth. I'm considering it because I think it could be a nice + on my resume, and as you know, I'm all for improving my software engineer persona. As I already earn a BSc and MSc degrees in computer stuff, I guess I see the certification process as some kind of adventure. Anyway, I know I'll spend a lot of time preparing myself for the exam and I just wanted to know if a Qt certification is worth the effort. Apparently there are 2 certificates that you can get in the Qt world: Nokia Certified Qt Developer (basic) Nokia Certified Qt Specialist (advanced) Nowadays I build cross-platform software in C++ and this exam would fit beautifully in my resume. My main concern is that, given the obscure future of Qt, I might be throwing time and money out the window. I'm looking for some advice regarding the usefulness of such certifications.

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• Fresh install 12.04 Performance & Stability: SONY VPCCW2S1E

  - by George Katsanos

  just yesterday I installed 12.04. Is it normal that installing a package (Chrome for example) takes 5 to 10 minutes (compared to Windows 7 for example which takes 2 or 3)? (with end result: installation failed) Otherwise is it normal that while the system is doing some installation,extracting packs and so on, other applications often become unresponsive? Sidenote: I don't care about fancy desktop effects, I installed ubuntu to go on and experiment with web servers, memcache, Varnish and git/svn. So basically I plan to do lots of console-only operations. My surprise was also the difference of stability compared to an old FreeBSD installation I had on a dinosaur P3 550Mhz :) (I am on a SONY VPCCW2S1E) (I guess it might have to do something with my problems?)

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• Worst code I've written in a while

  - by merrillaldrich

  Here's a nice, compact bit of WTF-ery I had to write for a prod issue today: Again: UPDATE TOP ( 1 ) dbo . someTable SET field3 = 'NEW' WHERE field2 = 'NEW' AND field3 = '' IF @@ROWCOUNT > 0 GOTO Again Can you guess from the code what awesomesauce issues I was working around? This was a reminder for me that sometimes there is time to do it right, but sometimes you just have to do it now. I need that lesson sometimes, as I tend to be a perfectionist. If you are trying to do it right , please don't...(read more)

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• How to make "xset s off" survive a reboot (12.04)

  - by matteo

  On an almost-fresh install of Ubuntu 12.04, after disabling screen turning off, screen lock, and suspension on inactivity from all the (two) places one can find under Ubuntu's System Settings, the screen still turns black after some minutes of inactivity. I can't tell for sure whether it only becomes blank/black or turns off. I've uninstalled gnome-screensaver, which didn't change anything. Of the several answers I found out there (most of which I didn't try because they were either unclear or reported to not work for everybody), I tried one that DID work: sudo xset s off after which I left the computer unattended for hours and the screen never turned black, so it definitely worked. HOWEVER it does not survive a reboot. After reboot, screen starts turning black again after N minutes of inactivity. Given that "xset s off" does work until reboot, how do I make that setting permanent? I guess I could create a script that runs at startup issuing that command, but I think that would be a horrible hack and there should be a cleaner way to accomplish this.

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• Resources for improving your comprehension of recursion?

  - by Andrew M

  I know what recursion is (when a patten reoccurs within itself, typically a function that calls itself on one of its lines, after a breakout conditional... right?), and I can understand recursive functions if I study them closely. My problem is, when I see new examples, I'm always initially confused. If I see a loop, or a mapping, zipping, nesting, polymorphic calling, and so on, I know what's going just by looking at it. When I see recursive code, my thought process is usually 'wtf is this?' followed by 'oh it's recursive' followed by 'I guess it must work, if they say it does.' So do you have any tips/plans/resources for building up your skills in this area? Recursion is kind of a wierd concept so I'm thinking the way to tackle it may be equally wierd and inobvious.

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• DDD: Service or Repository

  - by tikhop

  I am developing an app in DDD manner. And I have a little problem with it. I have a Fare (airline fare) and FareRepository objects. And at some point I should load additional fare information and set this information to existing Fare. I guess that I need to create an Application Service (FareAdditionalInformationService) that will deal with obtaining data from the server and than update existing Fare. However, some people said me that it is necessary to use FareRepository for this problem. I don't know wich place is better for my problem Service or Repository.

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• Developing for Chrome App/Android?

  - by Johnny Quest

  I have been developing for win7 mobile (XNA/silverlight and will continue to do so, love everything about it) but I wanted to branch a few of my more polished games to google app store online, and perhaps android(though not sure, as with all the different versions it makes learning/loading applications a bit tricky) What is the most versatile language to start learning from chrome apps/android: Java would be excellent for android, but could I port it to a web app for chrome? (and its close to C#) Flash would work for a web app as I can just embed it into a html page (have done actionscript before, didn't care much for the IDE though), but would it also work on android? or I guess there is always C/C++ but haven't heard much about that, though I think it works for both (though C++ does interest me) Any advice would be excellent, thanks.

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• Need help on implementing corporate network security solution and coming up with time lines to test it

  - by abc

  I have to come up with a proposal to implement corporate network security. Once I have done that I also have to come up with estimates on the time / money needed to test (QA) the implementation. What I need help with: What should I keep in mind while coming up with this proposal? I have already considered: Routers, Firewalls, VPN, Wireless, Server System, Web Apps etc. I know I am missing quite a lot. What else should I include? This the most challenging part I feel: How should I estimate the time needed for testing these security implementations? I guess I need to understand how can I test these security implementations first...right? Can you help me?

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• ubuntu 12.10 - nvidia gtx 550 ti proprietary drivers issue

  - by Phill

  I have installed Ubuntu 12.1 and own the nvidia gtx 550 ti (no integrated video). Installed it just fine but the buttons and text seem to get scrambled if using the nouveau drivers I guess. I tried installing the proprietary drivers manualy and from the Additional Drivers tab in software sources but every time I do that after it restarts the menus and icons dissapear an the only way getting them back is to revert to the nouveau drivers. I've tried noumerous attempts ending up reinstalling it. Any help would be apreciated, thanks.

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• UDP Code client server architecture

  - by GameBuilder

  Hi I have developed a game on android.Now I want to play it on wifi or 3G. I have game packets which i want to send it form client(mobile) to server then to another client2(mobile). I don't know how to write code in Java to send the playPackets continuously to server and receive the playPacket continuously from the server to the clients. I guess i have to use two thread one for sending and one for receiving. Can someone help me with the code, or the procedure to write code for it. Thanks in advance.

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• Enable wifi on my computer - firmware missing

  - by Sarah

  I am attempting to set up a wireless network on 11.04, freshly download today. The router is on and working. However, I do not have a wifi "card" (which I am assuming is a little USB-type thing that allows internet access, but correct me if I am wrong) and every time I try to type in the MAC address and everything, nothing works. I also get the "firmware missing" error when I scroll over the signal strength, which I have tried looking up but have been unsuccessful with completely understanding it. I guess my main question is do I need another little device to be able to use wifi on my ubuntu? I do have an ethernet cable but another person is using it and I do not want to be tied down to that cable. the problem is that none of the wireless networks show up, however they show up when I go into Windows mode on my laptop. I get an error message at the top saying "firmware missing" which I have tried looking up but still have no straight answer for.

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• *DX11, HLSL* - Colour as 4 floats or one UINT

  - by Paul

  With the DX11 pipeline, would it be much quicker for the vertex buffer to pass one single UINT with one byte per channel to the input assembler, as opposed to three floats? Then the vertex shader would convert the four bytes to four floats, which I guess is the required colour format for the pipeline. In this instance, colour accuracy isn't an issue. The vertex buffer would need to be updated many times per frame, so using a single UINT and saving 12 bytes for every vertex could well be worth it: quicker uploads to vram and also less memory used. But the cost is the extra shader work for every vertex to convert each 8 bits of the input UNIT into a float. Anyone have an idea if it might be worth doing? Or, is it possible for the pipeline to be set to just internally use a four-byte colour format? The swap chain buffer has been initialised as DXGI_FORMAT_R8G8B8A8_UNORM, so ultimately that's how the colour will be written. Thanks!

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• Is there a language between C and C++?

  - by Robert Martin

  I really like the simple and transparent nature of C: when I write C code I feel unencumbered by "leaky abstractions" and can almost always make a shrewd guess as to the assembly I'm producing. I also like the simple, familiar syntax for C. However, C doesn't have these simple, helpful doodads that C++ offers like classes, simplified non-cstring handling, etc. I know that it's all possible to implement in C using jump tables and the like, but that's a bit wordy at times, and not very type-safe for various reasons. I'm not a fan of the over-emphasis on objects in C++, though, and I'm gun shy of the 'new' operator and the like. C++ seems to have just a few too many hiccups to, for instance, be used as a system programming language. Does there exist a language that sits between C and C++ on the scale of widgets and doodads? Disclaimer: I mean this as purely a factual question. I do not intend to anger you because I don't share your view that C{,++} is good enough to do whatever I'm planning.

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• BizTalk and Cloud computing

  - by Suresh Behera

  Now a day I am more thinking on cloud computing,biztalk ,appfabrick,health care,HPC and data bursting. I guess I should have my own lab now and wish have enough time to play around. I will start writing more blog abound this subject slowly .I am in process to setting up a very nicely distributed and decoupled environment for biztalk .I got my first surprise.I will do more VM Role setup with windows Azure 4.0 . (Installation on Biztalk 2010 and database on different server.)   Thanks, Suresh...(read more)

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• How do freelancers know how much their work is worth?

  - by Qmal

  I want to start a bit of freelancing in web development using ASP.NET MVC3 and PHP and I already have some people who are interested in hiring me, but I still can't figure out how much to charge for projects since I have never done it. For example how much would this site cost? Would it cost more if the author built it from scratch instead of using WordPress as the CMS? Or what about a simpler site like this? How much time spent is considered good/normal for building sites like these? And maybe some freelancers with experience can tell me what the usual requests are that they get from clients. What sites are the most in demand? I'm asking because I'm a student and I really can't work every day in a full-time job but I need the money so I guess a little freelancing would help me out.

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• EV SSL Certificates - does anyone care?

  - by pygorex1

  Is any one aware of any data or studies from an impartial source that show the impact of EV SSL certificates on customer behavior? I've been unable to find any such studies. If an EV SSL certificate increases sales on a web store front by even a few points, I can see the value. Aside from data targeted at EV SSL it may be possible to guess at customer behavior based on user interaction with regular SSL certificates. Are users even aware of SSL security? Does regular SSL have any proven effect on web store front sales? Note, that I'm not asking about the necessity of good encryption - I'm asking about a potential customer's perception of security & trust.

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• Why does my cursor jump when typing in ubuntu 11.10

  - by Stephen Myall

  When typing in Ubuntu my cursor jumps around and its not application specific. It doesn't matter or Im filing in a web form, writing an e-mail or using LibreOffice or Lyx. Im using a Sony Vaio 64bit machine. i read a previous question (link below) on this subject which indicates it may have something to do with the touchpad settings. as this has occurred in previous Ubuntu distros Im guess it is somekind of hardware issue. How do you turn of the touchpad when typing to avoid the cursor jumping around? I'd be grateful if anyone can make this stop Stephen

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• How is time calculation performed by a computer?

  - by Jorge Mendoza

  I need to add a certain feature to a module in a given project regarding time calculation. For this specific case I'm using Java and reading through the documentation of the Date class I found out the time is calculated in milliseconds starting from January 1, 1970, 00:00:00 GMT. I think it's safe to assume there is a similar "starting date" in other languages so I guess the specific implementation in Java doesn't matter. How is the time calculation performed by the computer? How does it know exactly how many milliseconds have passed from that given "starting date and time" to the current date and time?

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• How to allow remote connections to Flask?

  - by Ilya Smagin

  Inside the system, running on virtual machine, I can access the running server at 127.0.0.1:5000. Although the 'remote' address of the vm is 192.168.56.101 (ping and ssh work fine), I cannot access the server with 192.168.50.101:5000 neither from the virtual machine nor from the local one. I guess there's something preventing remote connections. Here's /etc/network/interfaces: auto eth1 iface eth1 inet static address 192.168.56.101 netmask 255.255.255.0 ufw is inactive. How do I fix this problem?

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• Create dynamic buffer SharpDX

  - by fedab

  I want to set a buffer that is updated every frame but can't figure it out, what i have to do. The only working thing i have is this: mdexcription = new BufferDescription(Matrix.SizeInBytes * Matrices.Length, ResourceUsage.Dynamic, BindFlags.VertexBuffer, CpuAccessFlags.Write, ResourceOptionFlags.None, 0); instanceBuffer = SharpDX.Direct3D11.Buffer.Create(Device, Matrices, mdexcription); vBB = new VertexBufferBinding(instanceBuffer, Matrix.SizeInBytes, 0); DeviceContext.InputAssembler.SetVertexBuffers(1, vBB); Draw: //Change Matrices (Matrix[]) every frame... instanceBuffer.Dispose(); instanceBuffer = SharpDX.Direct3D11.Buffer.Create(Device, Matrices, mdexcription); vBB = new VertexBufferBinding(instanceBuffer, Matrix.SizeInBytes, 0); DeviceContext.InputAssembler.SetVertexBuffers(1, vBB); I guess Dispose() and creating a new buffer is slow and can be done much faster. I've read about DataStream but i do not know, how to set this up properly. What steps do i have to do to set up a DataStream to achieve fast every-frame update?

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• How to make sudo remember my password and how to add an application to startup

  - by Bragboy

  I guess this should be a simple thing for ubuntu users out there. I have two questions. Whenever I need to run some command that requires permission from root, I run as sudo followed by that command. It would be nice if that does not prompt for password (but I should still be issuing a sudo to make sure that I know what I am doing). How to do this? Every time I start my system, I go to terminal and start my VPN using sudo vpnc. This is almost everytime! How to automate this to a startup script? Help much appreciated! Thanks

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