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• How to change address and name of the computer in linux Ubuntu

  - by Byakugan

  I have troubles again after upgrading Linux to version 12.04 - When I try to update progams and files with "apt-get update" it says something like there is no address added to your computer name. So my hostname has name "Marco" and my hosts file has line "127.0.0.1 Marco" So where is problem? Where should I change my name to get it right for updates? Thank you. Before on version 11.10 it was working fine. W: Failed http://en.archive.ubuntu.com/ubuntu/dists/precise-updates/main/i18n/Translation-en Something bad happened in the translation "en.archive.ubuntu.com: http" (-5 - The machine name is not assigned to any address)

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• Could someone break this nasty habit of mine please?

  - by MimiEAM

  I recently graduated in cs and was mostly unsatisfied since I realized that I received only a basic theoretical approach in a wide range of subjects (which is what college is supposed to do but still...) . Anyway I took the habit of spending a lot of time looking for implementations of concepts and upon finding those I will used them as guides to writing my own implementation of those concepts just for fun. But now I feel like the only way I can fully understand a new concept is by trying to implement from scratch no matter how unoptimized the result may be. Anyway this behavior lead me to choose by default the hard way, that is time consuming instead of using a nicely written library until I hit my head again a huge wall and then try to find a library that works for my purpose.... Does anyone else do that and why? It seems so weird why would anyone (including me) do that ? Is it a bad practice ? and if so how can i stop doing that ?

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• Redirect AFTER Initiating download

  - by mashup

  I have a question - is there any way to initiate a download and AFTER the user has confirmed the download then redirect to another site? Is something like that possible via ASP or another language commonly used for websites? Bad PHP "user experience" scenario (In use right now) a) User comes to site, clicks download button b) Users sees "download" landing page, gets redirected after 5 seconds c) Download starts on Thankyoupage Good "user experience" scenario: (my dream solution, what I want) a) User comes to site, clicks download button b) Download starts immediately on landing page c) Download confirmed, redirects now to thank you page Any programming language is a go for this.

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• Is it good to buy multiple domains for competitive reasons?

  - by lowestofthekeys

  I am attempting to convince the higher ups at my company that spending $55 to renew one domain for a year is bad when they end up having 3-4 domains names for one website. They're reasoning for doing so is to keep these domains names out of the hands of the competition. For example, the company name is Pie Consulting & Engineering. They want to buy up pieforensicconsulting.com to keep it out of the hands of a competitor (we also do forensic engineering). Could a competitor use that domain in any kind of diabolical way? I mean I figure if someone is typing in pieforensiconsulting into the url field, they know what they're looking for and if it redirects to another company, they're not just going to stay on the site.

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• Programming languages similar to ActionScript 3 / EcmaScript based

  - by Juanlu001

  I almost learned programming and OOP basic concepts with ActionScript 3 on the Flash Platform years ago. Some time has passed since then; I'm not a professional programmer, but I have written code in PHP, Fortran, and now Python. But, lately, I have missed ActionScript 3 OOP implementation, static typing and, I confess, curly braces. As Flash platform is slowly dying nowadays, I'm looking for an Open Sourced programming language similar to ActionScript 3. I've read about Java, which is the most similar one I found, but actually is the only one it doesn't interest me (I started to hate it after bad experiences with web applets). Any ideas? Edit: Added EcmaScript to the title and the tags; I think that is what I am looking for.

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• Game Institute Math Courses

  - by W3Geek

  I'm 21 years old and I suck at math, I mean really bad. I don't have the necessary logic to apply it towards programming. I would like to learn the math and logic of applying it. I found Game Institute (http://www.gameinstitute.com) awhile back and heard a lot of praise about them. Are there Math courses any good? Thank you. Edit: My high school was terrible and did not prepare me for any math. I am fairly decent at programming, I just don't have the logic to apply any mathematics to programming, as an example I don't understand the algorithm of finding the size of a user's screen. Yes I have heard of KhanAcademy (http://www.khanacademy.org/) and I have completed a lot of maths on his website but I still don't have the logic to apply any of it to programming.

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• "PHP: Good Parts"-ish book / reference

  - by julkiewicz

  Before I had my first proper contact with Javascript I read an excellent book "Javascript: The Good Parts" by Douglas Crockford. I was hoping for something similar in case of PHP. My first thought was this book: "PHP: The Good Parts" from O'Reilly However after I read the reviews it seems it totally misses the point. I am looking for a resource that would: concentrate on known shortcommings of PHP, give concrete examples, be as exhaustive as possible I already see that things can go wrong. If you want to close this question: Please consider this, I looked through SO, and Programmers for materials. I obviously found this question: http://stackoverflow.com/questions/90924/what-is-the-best-php-programming-book It's general, mine is specific. Moreover I'm reading the top recommendation "PHP Objects, Patterns, and Practice" right now. I find it insufficient -- it doesn't address the bad practices as much as I would like it to. tl;dr My question is NOT a general PHP book request.

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• Why is Conway's "Game of Life" used for code retreats?

  - by blunders

  Code Retreat is an all-day training event that focuses on the fundamentals of software development. There's a "global" code retreat day coming up, and I'm looking forward to it. That said, I've been to one before and have to say there was a huge amount of chaos... which is fine. One thing that I still don't get is why the "Game of Life" is a good problem for TDD, and what good and bad TDD for it feels like. Realize this is a pretty open ended question, so feel free to comment.

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• Problems connecting to eduroam wifi - ubuntu touch

  - by Fiona Cox

  I am trying to connect to our university's eduroam wi-fi network with my Nexus 4 running Ubuntu touch (utopic latest build), but can't get past the first stage. I wonder if anyone can help please? I am following these instructions (which worked for my iPhone): http://www.st-andrews.ac.uk/itsupport/mobile/eduroam/ But when I go to the bandit.st-andrews.ac.uk/connect page then follow the link to 'eduroam setup' I get the error message: Authorization Required This server could not verify that you are authorised to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required. Apache/2.2.16 (Debian) Server at bandit.st-andrews.ac.uk Port 443 (Clearly it's the latter option (browser) as I haven't been asked for my credentials yet.) Is there a way round this, or am I just not going to be able to connect until further down the Ubuntu touch development road... Thanks!

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• How to improve testing your own code

  - by Peter

  Today I checked in a change on some code which turned out to be not working at all due to something rather stupid yet very crucial. I feel really bad about it and I hope I finally learn something from it. The stupid thing is, I've done these things before and I always tell myself, next time I won't be so stupid... Then it happens again and I feel even worse about it. I know you should keep your chin up and learn from your mistakes but here's the thing: I try to improve myself, I just don't see how I can prevent these things from happening. So, now I'm asking you guys: Do you have certain groundrules when testing your code?

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• Maintainability of Boolean logic - Is nesting if statements needed?

  - by Vaccano

  Which of these is better for maintainability? if (byteArrayVariable != null) if (byteArrayVariable .Length != 0) //Do something with byteArrayVariable OR if ((byteArrayVariable != null) && (byteArrayVariable.Length != 0)) //Do something with byteArrayVariable I prefer reading and writing the second, but I recall reading in code complete that doing things like that is bad for maintainability. This is because you are relying on the language to not evaluate the second part of the if if the first part is false and not all languages do that. (The second part will throw an exception if evaluated with a null byteArrayVariable.) I don't know if that is really something to worry about or not, and I would like general feedback on the question. Thanks.

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• HTG Explains: How the SmartScreen Filter Works in Windows 8

  - by Chris Hoffman

  Windows 8 includes a SmartScreen filter that prevents unknown and malicious programs from running. SmartScreen is part of Internet Explorer 8 and 9 – with Windows 8, it’s now integrated into the operating system. SmartScreen is a useful security feature that will help prevent bad applications from running, but it may occasionally prevent a legitimate application from running. SmartScreen reports some information to Microsoft, so it may have some privacy implications. HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks

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• Creating a blog for software changes

  - by Dave

  I work for a small company where I maintain a number of project all at once. I would like to create a blog and note software changes/update so that I can keep track of things. Plus it will also serve as help tool for other if they need help. I would like to install something locally on my machine or network, either ASP or PHP is fine. Which software would you recommend? Is it good idea, bad idea? Has anyone done it? I have worked with wordpress and I like it but I am afraid it is not best for code snippets. Any thoughts I do use source control. I am not an expert on it though. I use three different development environment. 1. Visual Studio 2. Eclipse 3. SQL Server Management Studio

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• How would you want to see software intellectual property protected?

  - by glenatron

  Reading answers to this question - and many other discussions of software patents - it seems that most of us as programmers feel that software patents are a bad idea. At the same time we are in the group most likely to lose out if our work is copied or stolen. So what level of Intellectual Property Protection does code and software need? Is copyright sufficient? Are patents necessary? As software is neither a physical object nor simple text, should we be thinking of a third path that falls somewhere between the two? Do we need any protection at all? If you had the facility to set up the law for this, what would you choose?

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• How to run applications as root?

  - by ????? ????????

  I am having some strange issue with Kate and Kwrite. When I click on Open File, it crashes with segmentation fault. I am a complete newbie to Linux, and I think the issue is that I am not running the application as root. How do I run applications as root in Ubuntu? Is it bad practice to do this? What is the purpose of the whole root thing, where even though we need to use root so frequently, it is not utilized as default?

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• Would google consider this a "link scheme"?

  - by Abe Miessler

  I work for a County Government. In an effort to improve our search engine rankings I was considering contacting some of the other Counties in my state and seeing if we could setup an arrangement where we link to them and they link to us. It seems like a reasonable thing to have a "Other Counties" page with various links on a County website, but it also seems like it's bordering on a link scheme according to Google. When I read Google's article about link schemes it seems like we hit some of the right reasons for having links on another County's site but also some of the wrong. Does anyone have any insight into whether this is a good or bad idea?

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• How do I make the jump from Android to Windows Phone 7?

  - by Rob S.

  I'm planning on making the jump over from developing apps for Android to developing apps for Windows Phone 7 as well. For starters, I figured I would port over my simplest app. The code itself isn't much of a problem. The transition from Java to C# isn't that bad. It's actually easier than I expected. What is troublesome is switching SDKs. I've already compiled some basic Windows Phone 7 apps and ran through some tutorials but I'm still feeling a bit lost. For example, I'm not sure what the equivalent of a ScrollView on Android would be on Windows Phone 7. So does anyone have any advice or any resources they can offer me to help me make this transition? Additionally, any comments on the Windows Phone 7 app market (especially in comparison to the Android market) would be greatly appreciated as well. Thank you very much in advance for your time.

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• Large resolution differences

  - by Robin Betka

  I want to develop a game on multiple devices such as PC, Android or IOS. Want it to be in 1080p, but that means a massive scale down for the smartphones. I know how to do that, just render everything on a 1080p rendertarget and then render it on the screen smaller. But what should I do so that the scalling down doesn't look bad and blury? I can't do it vector based or anything because the sprites simply need a specific size. Should I make the sprites power of two size to get some nice mipmapping? And which other settings can I do? Or should I rather go with a lower resolution but then having a little bit worse look PC version? The performance seems not to be a problem for me, so would be sad not using 1080p because of other problems.

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• Questions about linking libraries in C

  - by james

  I am learning C (still very much a beginner) on Linux using the GCC compiler. I have noticed that some libraries, such as the library used with the math.h header, need to be linked in manually when included. I have been linking in the libraries using various flags of the form -l[library-name], such as -lm for the above-mentioned math library. However, after switching from the command line and/or Geany to Code::Blocks, I noticed that Code::Blocks uses g++ to compile the programs instead of the gcc that I am used to (even though the project is definitely specified as C). Also, Code::Blocks does not require the libraries to be manually linked in when compiling - libraries such as the math library just work. I have two questions: Firstly, is it "bad" to compile C programs with the g++ compiler? So far it seems to work, but after all, C++ is not C and I am quite sure that the g++ compiler is meant for C++. Secondly, is it the g++ compiler that is doing the automatic linking of the libraries in Code::Blocks?

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• Visualize Disaster

  - by merrillaldrich

  Or, How Mirroring Off-Site Saved my #Bacon My company does most things right. Our management is very supportive, listens and generally funds the technology that makes sense for the best interest of the organization. We have good redundancy, HA and disaster recovery in place that fit our objectives. Still, as they say, bad things can happen to good people. This weekend we did have an outage despite our best efforts, and that’s the reason for this post. It went pretty well for my team, all things considered,...(read more)

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• Constructive criticism for my bounce rate being so high [closed]

  - by Daniel

  The bounce rate on my website's product pages is 80%, which is terrible. Could you offer any opinions on whether you consider the user experience to be bad, and how I could possibly improve it? Other pages, such as the home and category pages, have acceptable bounce rates, but the vast majority of my traffic lands on the product pages. I already tried removing some Google ads for a couple of days, but this didn't seem to help at all. I'm working on doing A/B testing at the moment. (It's tricky, as the site is based on a CMS - I custom coded the [Joomla] component, so hopefully I can get this testing working.)

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• How should I manage a team with different skill levels?

  - by Jon Purdy

  I'll be working on a software project with some friends of mine, and I've been appointed technical lead. None of these guys is a bad programmer at all, but I do have significantly more experience than them. I need to be able to distribute the work among everyone on the team, while also making sure that we don't tread on one another's toes; that they meet the relatively high standards of quality and scalability that we need to make this project successful, without requiring me to review everything they commit. How should I maintain standards while avoiding micromanagement? Is it enough to make some diagrams, schedule some code reviews, and trust that I'll be able to fix anything that they might break, or should I go the TDD route and write explicit tests for the team to satisfy?

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• Learning PHP OOP

  - by Ryan Murphy

  I have been coding PHP for about 2 years now and I THINK that I have a very good grasps of the fundamental parts of PHP, i.e. Functions foreach/IF statements sessions/cookies POST/GET Amongst a few others. I want to move on to learning OOP PHP now, so learning how to use classes and making it a really valuable skill. I have 1 requirement, the source must be a respected source that doesn't teach developers bad habits. I have the book: PHP and MySQL Web Development However, as useful as that is I would like an online source. I would like to know from people with experience in OOP PHP, how and where did they learn OOP PHP. Obviously by doing, but I would really appreciate some great resources which help me along the way.

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• Should I be worried if I solve a lot of my problems the same way?

  - by Bryan Harrington

  I really enjoy programming games and puzzle creators/games. I find myself engineering a lot of these problems the same way and ultimately using similar technique to program them that I'm really comfortable with. To give you brief insight, I like to create graphs where nodes are represented with objects. These object hold data such as coordinates, positions and of course references to other neighboring objects. I'll place them all in a data structure and make decisions on this information in a "game loop". While this is a brief example, its not exact in all situations. It's just one way I feel really comfortable with. Is this bad?

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• ejabberd won't look at my host_config option

  - by John

  I'm new with ejabberd. What I want is to have a host myhost.domain.com which has an ldap authentication method. This all works fine if i modify the global options in AUTHENTICATION section in my ejabberd.cfg file. I am able to create two clients( defined in my LDAP directory ), and comunicate between them. Like i said, this works fine. But by aplying this authentication method globaly, it means that every hostname that i declare must use that. So i'm looking at {host_config, "myhost.domain.com" ...} But somehow i can't get ejabberd to look at that configuration, it just skips it. If i declare it like: {xhost_config, ...}, than in my ejabberd.log file i get a bad return error( so it knows that the configuration is there, but it won't look at it). Any suggestions? Thanks.

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