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• Should I use parentheses in logical statements even where not necessary?

  - by Jeff Bridgman

  Let's say I have a boolean condition a AND b OR c AND d and I'm using a language where AND has a higher order of operation precedent than OR. I could write this line of code: If (a AND b) OR (c AND d) Then ... But really, that's equivalent to: If a AND b OR c AND d Then ... Are there any arguments in for or against including the extraneous parentheses? Does practical experience suggest that it is worth including them for readability? Or is it a sign that a developer needs to really sit down and become confident in the basics of their language?

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• "The system is running in low graphics mode", unable to connect to the Internet

  - by Blah

  When I try to log onto Ubuntu, I get a notice that reads: The system is running in low graphics mode. I searched for a solution and there are a slew of answers. However, many of them seem to suggest reinstalling different things. After pressing Ctrl+Alt+F1 and getting to a terminal, I attempt commands like sudo apt-get install example. Upon doing so I get notices that say things such as could not resolve host which I am assuming means I'm not connected to the Internet. Since I can not connect to the Internet, none of these responses are helpful to me. What can I do?

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• EntSSO stopped working

  - by blomqvist

  My EntSSO (Enterprise Single Sign-On Server, part of BizTalk) did not start today, with the message: The SSO service failed to start. Error Code: 0x80131700 Could not create SSOSQL. To fix the problem, reinstall SSO or try 'regasm SSOSQL.dll' from a Visual Studio command prompt. Error Code: 0x80131700   The only reason for this that I can think of is that I have just installed the .net framework 4.0 RC but I have not verified this. The solution suggest in the error message works like a charm! Open a Visual Studio command prompt and run this command: regasm  ‘C:\Program Files\Common Files\Enterprise Single Sign-On\SSOSQL.dll’ Problem solved!

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• How to remove options from right click menu?

  - by Someone Like You

  There was this question, which suggest the use of Nautilus actions So i installed that. I try to open it but it does not open. I'm not asking you to fix it since Ask Ubuntu is not a bug tracker. All bug reports here will be closed as off-topic Fair enough, and i don't have time to report bugs, anyway Nautilus actions doesn't seem to care about the bug, it was reported before no actions were taken. Thus I don't seem to care about Nautilus actions. My question is simple: I want to know is there any alternative to Nautilus actions, or even better, how to add/remove options from the right click menu manually (without using any other software).

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• Is there now any way to convert mp3 files to m4a or aac 192kbit?

  - by piedro

  Since about two years now I am trying to find a way to convert high quality mp3 files to m4a or aac files with a fixed bitrate 192k. Please don't suggest using another format - i thought this through as far as it goes. The problem here is: ffmpeg obvioulsy can't convert to a higher bitrate than 152k. Even when it says it does so the resulting files still have 152k instead of 192k. ffmpeg also has/had a bug not writing the bitrate into the audio file tags which means when testing you have to calculate the bitrate manually by dividing the filesize by the length of the audio in seconds (resulting in 152k - see above) choosing faac as converter gets me the same results other programs don't work reliably (see this thread Howto convert audio files to *.m4a? I know that this is not an original new problem but I am wondering if there is still no way to convert with ubuntu/kubuntu 12.04 after a lot time passed and I can't find some of the bug issues mentioned in the other thread anymore. So: Is there a solution after all?

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• How to fix error in pdf2djvu: "Bogus memory allocation size"

  - by Tim

  I am using pdf2djvu to convert a pdf file into a djvu file, but got this error while trying to convert either bundled or indirect multi-page djvu file: $ pdf2djvu 1.pdf -o 1.djvu 1.pdf: - page #1 -> #1 Bogus memory allocation size $ pdf2djvu 1.pdf -i 1.djvu 1.pdf: - page #1 -> #1 Bogus memory allocation size I was wondering what is wrong here and how I shall fix the problem? You can suggest another application other than pdf2djvu. To convert it to djvu My pdf file can be downloaded from here , in case that you may wonder what is special about it. Thanks and regards

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• You do not appear to be using the NVIDIA X driver

  - by Vishal shekhar

  my laptop has nvidia GT540m yesterday i install nvidia-current after updating fromsudo apt-add-repository ppa:ubuntu-x-swat/x-updates then i write sudo nvidia-xconfig and then reboot my desktop visual effect changes and it look good like nvidia is working but still glx i not working and nvidia-setting tells me that You do not appear to be using the NVIDIA X driver my dkms status is nvidia-current, 304.43, 3.2.0-30-generic-pae, i686: installed lspci |grep VGA output : 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1) also i can not login to my admin account but when i login to standard user or guest it works but still NVIDIA X driver is not working can any one suggest something so that NVIDIA X Driver start working as i seen many forum but none worked for me earlier i tried nvidia-173 ,nvidia-current(before x-swat/updates reprository) but none works for me

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• What is the best way to implement paginated text editing in Python?

  - by W.F

  I'm trying to build a formatted text editor in python. I need the editor to be paginated on edit mode. Same as in all popular word processors - when the user is editing the document what he/she sees is a representation of the actual, physical, page. I've tried looking into PySide but I can't find any ready solution to this, nor I can work out a way to do it myself. I am totally open to new technologies, so if you think Python is not the right choice here I would love to hear about new stuff (especially when I'm this new to UI coding). It only needs to be cross-platform and let me do rapid development (hence me looking for an out-of-the-box solution to this). Please suggest the best way to implement this. Please also note that I am looking for either a ready solution or an advice on how to tackle this. Thank you very much !

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• What is "networking" for your career and how do you know if you have done it successfully?

  - by Jay Godse

  Many people suggest "networking" as a tool or technique to build your career, get better jobs, get promotions, et cetera. But what is "networking"? And more importantly, how do you know if you have "networked" or "built your network" "successfully"? (I quoted all the terms which I think may have subjective and widely varying definitions). Many folks think that networking is schmoozing at networking events. Others think it is adding "friends" to Facebook or LinkedIn. But how do measure the success of such networks or activities? But we all know people (perhaps ourselves) who have done those things and still have trouble getting jobs, promotions, and recognition.

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• Microsoft attaque Google sur son navigateur, reprochant un manque de respect de la confidentialité

  Microsoft attaque Google sur son navigateur, reprochant un manque de respect de la confidentialité Pete LePage, chef de produit pour Internet Explorer, a attaqué Google sur le peu de confidentialité qu'apporterait son navigateur. Microsoft reproche notamment à Chrome d'envoyer chaque lettre entrée dans la barre d'adresse au moteur de recherche (fusion avec la barre de recherche), ce qui permet à la fonction « Suggest » des moteurs de recherche d'afficher une liste des mots-clés les plus utilisés. Action non respectueuse de la vie privée des internautes que n'éfectuerait pas IE8. Et pourtant, IE8 aussi envoie des informations anonymes à Google lorsque celui-ci est moteur de recherche par défaut. Tout co...

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• How to properly URL/domain forward

  - by NRGdallas

  No clue on a title for this, someone feel free to suggest an edit. I have a client that has a website. He owns around 200 domains, and wants each domain to contain content from the main website. The header, footer, and navigation bars will remain the same for each domain, but the actual page content will vary (obviously duplicate content issues, open to suggestions) He wants each individual page to be its own separate domain, rather than a url within the main domain. (page1.com page2.com etc - NOT site.com/page1.html, however the file is actually hosted at site.com/page1.html - all links will direct to site.com/whatever accordingly) What would be the best place to start reading / learning on how to do this, and what concerns/considerations should be taken into mind?

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• SEO for landing page of three different language sites

  - by Zahid

  I have three sites running under the main domain example.com/en/ example.com/ar/ example.com/ur/ And there is a main HTML landing page example.com which have some introduction in three languages and links to three sites. Now i want this landing page to have a good SEO. and i want this page to appear in search in three languages. if someone searchs Arabic it should be in results with Arabic title and description, if someone searches in English it should response in English. Is it possible? or suggest me other way to make a landing page for these sites.

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• What is the next promotion for a scrum master

  - by gnebar

  I'm currently a scrum master. I have been offered a promotion to a role that will allow me to have a wider impact. (more involved in company wide architectural decisions, possible secondment to kick start major projects, etc). The role and title of the job has yet to be decided but my company are open to guidance from me. I'm happy I can mould the role to suit me and the company but I'm unsure about the job title that fits this role. Technical Evangelist has been suggested but i'm not sure that is the correct title. I'm keen to proceed down the technical route. What would you suggest? What other roles do people take after scrum master/technical lead? EDIT: (I am aware that my current role is a mix of a technical lead and scrum master role, but that's how we do it in my company :) )

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• Flashing task bar(firefox) in lxde panel and ubuntu internal error

  - by arroy_0209

  I have upgraded from ubuntu10.04 to 12.04 and installed lxde. The panel is now customized according to my convenience. The problem is there was a default checked option for "Flash when there is any window requiring attention" in Task bar(window list) and now when I run firefox, at times the concerned bar in the panel window list starts flashing but it is not clear exactly why at that moment firefox requires my attention. Normally this happens after I download some files (pdf files) and keep using firefox. The only solution I have found is to quit firefox and even after that I receive this message "Sorry, ubuntu12.04 has experienced an internal error. If you notice further problems, try restarting the computer." As usual I report the detailed message to ubuntu as suggested and finally restart the computer. So there are two problems, first, exactly why firefox needs my attention at times and second, why immediately after this, ubuntu experiences an internal error. Please suggest what I should do.

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• What route to take to become a systems developer?

  - by Ramin

  In the past I have done a lot of Java and Python coding. Mostly, I worked on web apps and some simple console or gui apps. I also have a formal education in computer science. What route should I take to become a systems developer? I always did like C++, but never had a chance to use it for anything. Would mastering C++ be one of the steps? If so what resources can you suggest? Also, I would like to know how much different is the work between plain old development and systems development. There seem to be a lot of overlapping between the two.

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• Make Interactive Story more Variable [on hold]

  - by Guest0343

  I'm creating an interactive story that allows users to make choices based on a story. However, it doesn't give users room to do much creatively on their own. They are bound by the script at the moment. I'm wondering if anyone can suggest any element I can add that might give users some personalization. I was thinking about maybe character editing, but that doesn't add too much. I also thought about a stats system where they can have certain attributes and stats they might earn, but I'm not sure how they might use those stats. Anything is helpful!

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• HDMI Audio stops after TV turned off

  - by Ryan

  After the 12.04 Update my HDMI audio stops working anytime I turn off my 2nd monitor(plasma TV). Graphics card is a Radeon 6800 which has DVI out to 1st monitor, HDMI out to receiver which the TV gets it's Audio/Video. Audio is always via my receiver sound. Things work fine as long as it boots with the TV and Receiver on. Turn off the TV and BART's HDMI audio will go away, and the HDMI option vanishes from the sound menu. I had an occasional HDMI issue with 11.10 but turning on/off the TV would fix the sound. How can I hardcode things so that it always uses HDMI out of audio? I suspect the TV is sending a signal upon that 12.04 is now listening for. Turning the TV back on does NOT resolve this, and I'd suggest having the ability to override this new "feature" via sound menu.

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• How can I generate signed distance fields (2D) in real time, fast?

  - by heishe

  In a previous question, it was suggested that signed distance fields can be precomputed, loaded at runtime and then used from there. For reasons I will explain at the end of this question (for people interested), I need to create the distance fields in real time. There are some papers out there for different methods which are supposed to be viable in real-time environments, such as methods for Chamfer distance transforms and Voronoi diagram-approximation based transforms (as suggested in this presentation by the Pixeljunk Shooter dev guy), but I (and thus can be assumed a lot of other people) have a very hard time actually putting them to use, since they're usually long, largely bloated with math and not very algorithmic in their explanation. What algorithm would you suggest for creating the distance fields in real-time (favourably on the GPU) especially considering the resulting quality of the distance fields? Since I'm looking for an actual explanation/tutorial as opposed to a link to just another paper or slide, this question will receive a bounty once it's eligible for one :-). Here's why I need to do it in real time: There's something else:

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• glsl demo suggestions ?

  - by brainydexter

  In a lot of places I interviewed recently, I have been asked many a times if I have worked with shaders. Even though, I have read and understand the pipeline, the answer to that question has been no. Recently, one of the places asked me if I can send them a sample of 'something' that is "visually polished". So, I decided to take the plunge and wrote some simple shader in GLSL(with opengl).I now have a basic setup where I can use vbos with glsl shaders. I have a very short window left to send something to them and I was wondering if someone with experience, could suggest an idea that is interesting enough to grab someone's attention. Thanks

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• SQL Excursions

  - by Grant Fritchey

  Not everyone likes boats. Some people like hanging out, on dry land, maybe sipping a good wine. Interested in doing that AND learning some new stuff about SQL Server? Then you might want to check out SQL Excursions. Denny Cherry (blog|twitter), MVP and terribly sharp individual, has organized this new venture to supply small group training in combination with travel to interesting, and let's face it, comfortable, places. The first trip is already set for Napa Valley. The training will be by Denny and MVP, author, and all round great guy, Thomas LaRock (blog|twitter). Seats for this unique event are going fast. I'd suggest signing up soon. Oh, and did I forget to mention that Red Gate is sponsoring dinner at a fine restaurant? Well, consider it mentioned. Seriously, nice wine, great training, beautiful scenery, networking, all in one place. What are you waiting for?

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• Ubuntu 11.10 is not detecting wired connection on Lenovo G580

  - by Dilip

  I am not able to see wired connection options in header menu. I can see wireless option but still It is not working. Could any one suggest what I am missing? Please find my ifconfig output: =================================== root@rails-dev:/home/rails_work/rdfnet# ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:41944 errors:0 dropped:0 overruns:0 frame:0 TX packets:41944 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4602835 (4.6 MB) TX bytes:4602835 (4.6 MB) ===================================

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• You know you're a "version control avoider" if [closed]

  - by kmote

  I'm in the process of trying to introduce Version/Revision Control to a team of developers who have never used it. I'll be giving a presentation that I hope will be a persuasive explanation of the importance of Version Control -- the benefits of using it and the liabilities of avoiding it. I'd like to kick it off with an amusing but instructive list modelled after the "redneck" line of jokes. Can anyone help me add to this list? "You know you're a Version Control Avoider if..." You have a bunch of files or folders with names like Engine_05212012_works_old[2].cpp You've had to explain to your boss how you accidentally overwrote production code. I don't consider myself terribly witty, but I think a little humor could be helpful in this situation. Any ideas for how to extend this list? [Bonus points if you can suggest a better moniker than "Version Control Avoider"]

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• Having tried differen ways but none worked - How do I disable a service from auto-start at boot in Ubuntu?

  - by Howard Guo

  This really doesn't make sense. I've been using many other distros and never had such difficulty managing autostart services. I found three ways of disabling autostart services, and none of them works for me: update-rc.d -f service_name remove chkconfig --level 12345 service_name off sysv-rc-conf I tried all the three ways to disable mysql daemon, mongo daemon, redis server, cups daemon, yet all of the utilities confirmed that the daemons are disabled, yet they still automatically start on boot. Please suggest the most correct way to disable services from auto-start at boot. Thank you! btw, it's running 12.04

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• Interactive Reporting Translation Workbench utility is available

  - by THE

  As you may have seen in our  Newsletter, Oracle has released the "Oracle Hyperion Interactive Reporting Translation Workbench" for Hyperion Interactive Reporting (IR) customers who are moving to Oracle Business Intelligence Enterprise Edition (OBIEE). A summary for this utility can be found  here. To get the Utility along with documentation and training material we suggest that you visit the Oracle Technology Network ( OTN ) "Oracle Hyperion Interactive Reporting Downloads" page. Friendly enough, instead of hundreds of pages of "getting started Docs", Oracle has packed some training videos into the downloads, so that getting started is made as easy as possible. But of course the documentation comes with it as well.

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• Q&amp;A: How do I cancel my Windows Azure Platform Introductory Special? (or any Subscription)

  - by Eric Nelson

  Short answer: Don’t! Just kidding :-) Long answer: I believe it is the same process as for other Microsoft Online Services – but I have never tried it. Hence please post a comment if you follow this successfully or not and I will amend. From http://www.microsoft.com/online/help/en-us/mocp/, search for “cancel” and you get: What I am not clear about is whether an Introductory Special is classed as a trial. Either way, the answer is to contact support and ask to cancel. I would suggest you are fully armed with details of your subscription which you can get from signing in to https://mocp.microsoftonline.com. You can contact support via a online web form at https://mocp-support.custhelp.com/ Or You can call them. The details are again on the support page http://www.microsoft.com/online/help/en-us/mocp/  In the UK you can call 0800 731 8457 or (0) 20 3027 6039 Monday – Friday 09:00 – 17:00 GMT (UTC). I hope that helps.

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