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• error when installing rmagic gem on Ubuntu 12.04 for Ruby on Rails

  - by PeaceDefender

  0 down vote favorite I am trying to get my Ruby on Rails application working and installing RMagic gem. But I get an error that says "Can't install RMagick 2.13.1. Can't find the ImageMagick library or one of the dependent libraries." Altough I have ImageMagick installed with its dependences. Terminal log : http://pastebin.com/vcgkbwZR I even tried to installed RMagic from Synaptic, but I get the same error when I run "bundle" command. Through my search, some people had problem with lib dependencies, but I believed I have them all installed. Another solution I found is this ( error installing RMagick from gem ) a little bit old and not sure if it is going to work for 12.04. BUT, I don't know where those configurations should go.

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• Upgrade to 12.04 LTS failed, unable to boot

  - by stargazergal

  I was trying to upgrade to 12.04 LTS, but the upgrade froze in the process (it was stuck for over 8 hours) and I had to do a hard reboot. Now when I boot up, I get the following: mountall /lib/x86_64-linux-gnu/libc.so.6 version 'glibc_2.14' not found. I'm not sure what I need to do from here. Do I need to go back to the previous version? Or can 12.04 still be installed? I don't want to lose any of my files. I am still new to Linux, so please give detailed step-by-step instructions.

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• How to fix “A deployment or retraction is already under way for the solution “*.wsp”, and only one deployment or retraction at a time is supported”

  - by ybbest

  I faced this issue when I try to deploy a solution and it failed initially due to SharePoint 2010 Administration service is not started. I then started the service and redeploy the solution; however I face the above issue. To fix it, you need to cancel the current deployment then redeploy the solution. Problem: Solution: To fix it, you need to cancel the current solution deployment. Go to CAà System Settings àManage farm solutions and then cancel the deployment. Next, you can redeployment your solution.

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• A Single wireless network is not showing up in Ubuntu that used too, and other devices have no issue finding or connecting to it

  - by Kit Sunde

  Up until about a week ago I could connect to my wireless, but now I suddenly can't. Every other wireless in the area show up in the network manager. My kindle can connect to it, my friend can connect to it (in windows) without having connected to it before. My other netbook (Samsung NC10) can connect to it, but my other Samsung N150 now cannot even see it. I have tried deleting the old auto entry for it in the network manager Tried disabling and enabling both the networking and the wireless through the network indicator. Disabled the networking through the hardware shortkut key thing [fn] + [F9] Attempting to connect to it as if it was a hidden network. I'm at a loss, how would I go about debugging and unborking my computer?

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• What are steps in making an operating system in C ? [duplicate]

  - by ps06756

  This question already has an answer here: Compiler/OS Design - Where to start [closed] 3 answers I am trying to make an my own OS. This is for educational purpose only, so that I get to understand the internals as well as get a good idea of low level programming. I have some prior application development experience in C#/python/C++/C. I am a noob in assembly language(very less experience and knowledge). I understand that in writing an operating system,we can't go without assembly language. Currently, I have just printed a string in assembly language in the boot sector using qemu and BIOS interrupts. What I want is that, can someone specifically point out the steps that I need to follow to make my operating systems run C programs. So that, I can start writing my OS in C. Any other piece of advice to help a newbie, regarding the same is also welcome. Although, I have looked into many os development related tutorials/websites, I can't seem to find this information anywhere.

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• Tell us what you want in 6.6

  - by Reggie

  Now that we have finished 6.5 it's time to really start gearing up for 6.6.  We have  many great feature ideas but we want to hear from you.  To help with that, we're running a poll on the website where you can vote on the features you would like to see in the next version of the best MySQL ADO.Net Connector on the planet.  You can find the poll at http://dev.mysql.com and scrolling near the bottom of the page.   Thanks for your time and please go vote.  

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• Is it legal to charge extra fees for copyrighted content on mobile platforms?

  - by Macrow Willson

  this question just came up as we recently bought content from image stock portals. Many of those altered their license agreement in favor of charging more for using in mobile apps. So instead of using their standard licenses, you need to pay an "extended" licenses which multiplies the fee easily by 5-10. That doesn't make sense as the mobile device is just a smaller browser and protects the content even better than a desktop computer. Are those stock agencies allowed to do that, and is it legal at all ? I am not a lawyer but I would even risk to go on with the standard license and wait to be sued in that matter.

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• CPU heating up too much and locking the notebook [12.10 32bits]

  - by Lucas Coutinho

  I have an AMD A6-3400m. When installing ubuntu 12.10 the CPU gets too hot. When I go to see the cpu usage not see anything unusual. I think she is working at or above the specifications of the cpu. I can not finish the installation because the notebook warms both the system disarms and the cooler is maximum. Do not know if it's just me but I never had a good experience using Linux on AMD. When I used Intel these problems did not happen. What is happening can? Ps: The laptop works perfectly in Windows 7 Home Premium 64. No crashes, no overheat, simply works.

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• Should I choose a programmer or on-site (QA) job?

  - by user3978

  This question is for all the professionals who have been in IT industry from long time. I have 4 years of experience in QA (manual testing) from a MNC located in India. I have been thinking about pursuing software developers job so I applied for some companies as a fresher and one company offered me to take as entry-level engineer. But my present company does not want to loose me and they are offering me an on-site opportunity? So which one should i go for Programmer job or on-site (QA) in terms of long term perspective?

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• Alternative ways to construct maps

  - by sideways8

  I've searched around and it seems like most people are using tile-based map systems. I suppose this question is more theoretical than practical (I am not very concerned about memory or performance speed), but I want to know: what other ways can a map be created in a game? A map being a graphic representation of terrain that can be navigated, has entrances and exits, and boundares (no-go zones). Besides using text files to store and arrays to load tile data, one idea I had was to store a map entirely as a graphic file and use queries on the pixel colour to determine boundaries (ie, you can only move in a certain direction if the way is bright enough in that direction). What other creative map systems are out there?

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• Great F# getting started online book

  - by MarkPearl

  So I have been battling around with F# for a few weeks and it has been frustrating just getting my brain around the syntax etc. Then someone put a comment on my blog that I should check out the following online book called the F# Survival Guide. I highly recommend those wanting to get into the basics of the language to go through this resource. It is easy to understand, especially for someone coming from a C# background. Give it a read… it gets a two thumbs up from me!

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• Can't connect to or search wifi

  - by Mark

  I just installed the latest version of Ubuntu, I think it was 13. Something. Anyway I got it running and now I've been trying to connect to my wifi. No matter where I go I don't see an option for wifi. I looked on the computer and found some commands to use in terminal to run a scan for wifi networks but all of them returned the error "interface doesn't support scanning" if anyone could help that would be great...I can't do anything without wifi! Also I'm new to this so if you could give step by step directions that would help a lot. Thanks!

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• What kind of math should I be expecting in advanced programming?

  - by I_Question_Things_Deeply

  And I don't mean just space shooters and such, because in non-3D environments it's obvious that not much beyond elementary math is needed to implement. Most of the programming in 2D games is mostly going to involve basic arithmetic, algorithms for enemy AI and dimensional worlds, rotation, and maybe some Algebra as well depending on how you want to design. But I ask because I'm not really gifted with math at all. I get frustrated and worn out just by doing Pre-Algebra, so Algebra 2 and Calculus would likely be futile for me. I guess I'm not so "right-brained" when it comes down to pure numbers and math formulas, but the bad part is that I'm no art-expert either. What do you people here suppose I should do? Go along avoiding as much of the extremely difficult maths I can't fathom, or try to ease into more complex math as I excel at programming?

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• In what ways can I test an image slideshow javascript code?

  - by Rahul

  I have a slideshow of images (and links) on a page. These images are part of a JSON response to a request sent after the page loads. The slideshow is set to play at an interval of 2 seconds. The slideshow can be paused, played over, and all other controls a normal slideshow would have. As a Rails dev, I proposed cucumber but the javascript guys in the team are not comfortable with ruby. I saw some cucumber for javascript libraries coming up, still in experimental stage. I checked out jasmine and related tutorials but all I could get from them is how I can carry out any internal functional testing such as credit-cart validation, etc. - which I think could actually be handled in unit testing? (Screw the research I did and) How should I go about testing this and similar components?

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• android game: how to approach mutliplayer

  - by willmer

  I'm making a single player game that is near completion, and I am already starting to think about giving the game multiplayer. The multiplayer would basically be finding someone to play against, likely in a waiting room or just have a match-making function, and then having a pokemon style battle between the people in real time. I think it would be relatively simple as I'm just sending information about each attack(move chosen and damage) and what it did back and forth, but I'm not sure what resources to consult for this. I am very new to Android/Java development and really just learning as I go. I have heard a bit about Skiller, but I'm still unfamiliar with using other SDK's and how easy it may be. Does anyone have any suggestions as to what SDK's or methods for accomplishing this. I currently have no money to spend on software development, but I'd like to get started on learning how to do this.

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• Pointers to implementing a taxonomy system?

  - by petsagouris

  I am taking part in the development of a PHP CMS (yeah I know you are like, meeh). It is currently using simple tags for tagging content. What I want to do is push the whole thing to using Taxonomy but I am not sure on what to pay attention to, or how to go about structuring the whole vocabularies/terms. I'd love to be able to keep the user interaction close to that of the current simple tags and at the same time allow for more advanced usage by power users. The Drupal and the Wordpress taxonomy systems are being reviewed at the moment and they provide valuable resources. Nevertheless, it could be that someone has some simpler and more appropriate thoughts on this matter.

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• What is the best way to INSERT a large dataset into a MySQL database (or any database in general)

  - by Joe

  As part of a PHP project, I have to insert a row into a MySQL database. I'm obviously used to doing this, but this required inserting into 90 columns in one query. The resulting query looks horrible and monolithic (especially inserting my PHP variables as the values): INSERT INTO mytable (column1, colum2, ..., column90) VALUES ('value1', 'value2', ..., 'value90') and I'm concerned that I'm not going about this in the right way. It also took me a long (boring) time just to type everything in and testing writing the test code will be equally tedious I fear. How do professionals go about quickly writing and testing these queries? Is there a way I can speed up the process?

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• Google Analytics Funnel problems

  - by Alex

  I have a problem with the funnels in Google Analytics. So I have a e-commerce website that I want to track the user path to a purchase. I want GA to track if a user goes trough these steps [Item page]-[Purchase]-[Checkout]. I thought this could be done by funnels and my setup currently now consist of: Step 1: [Item page] (Required) Step 2: [Purchase] Goal: [Checkout] But when I go to the "Funnel Visualization Report" the following shows. [Item page] Visits: 150 [Purchase page] Visits: 170 [Checkout] Visits: 32 How can the [Purchase page] be higher than the [Item page]? I searched the internet over, and found something called Horizontal Funnels but this doesn't show the correct numbers, again the purchase and checkout steps are higher than the item page. So somehow it doesn't need step 1, to fulfill the funnels/goals. What am I doing wrong?

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• wow ok win8 still needs some work.

  - by foxjazz

  I was on geeks with blogs on win8, and noticed I couldn't create a new post.Now using chrome with 8 and I am posting.I am finding things I like about windows 8 and things that I just don't know yet.Like what's the shortcut key to bring me to a clean legacy desktop?And also what about those apps that get suspended like the explorer app when you go to mail, and your explorer app was in the middle of downloading a file. So you have to start the download again.I am impressed with some of the improvements, however I think in order for all these things to be accepted as a matter of well by the masses, chrome or firefox (ie won't do it) needs to upgrade their browsers to work with html5 and css3 fully. Obviously the first group that does that will be the browser of choice for any user.There are other observations that I am on the verge of making, but I need to research a bit more before making any comments on the new windows store visual studio 12 environment.Have a good day,Signing off.Foxjazz

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• Targeting a vehicle with complex movement?

  - by e100

  Targeting a vehicle with known constant velocity is simple, and collision is guaranteed. Imprecise AI can be modeled by adding a small error factor. But how would one go about targeting a vehicle whose movements are more complex? Perhaps it's evading the AI or another game object. I've been thinking about how I'd do it myself in a FPS (in which bullets have finite speed) and think there might need to be at least couple of targeting modes based on the target's movement in the previous second or so: If it's near linear (peak acceleration in a certain range) target with the linear model If it's highly irregular (perhaps size of bounding box of recent positions could be used?) , target at an average For now I can assume 2d space, AI is stationary and projectile moves linearly.

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• How to show history of edits for a post like StackExchange? [on hold]

  - by volume one

  Using: ColdFusion 10, JQuery, IIS 7.5 I'm creating a system where people can submit their text articles to me and I can apply edits/corrections and send it back to them. However I don't want to lose their original work. I want them to see where I made edits. StackExchange pretty much does what I want by showing when a post was edited and then you can see the history of changes. Can anyone please suggest how to go about doing this? Everytime an edit is made, it has to be written to the database. But how do I show what was edited? It could be 1 word in a whole paragraph... how would I highlight this? I just need some pointers if possible at what to think about and what to use if anyone has the time to help me out.

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• Easy Method to Change Color on UI Elements

  - by A13X

  This isn't a language-specific thing as far as I'm concerned. I was wondering what may be a quick way to change the COLOR of a certain on-screen element such as a button and its associated text. I would assume there is a trick to making a graphics engine so maybe individuals pixels or groups of sprites can have their colors easily shifted. A lot of game interface buttons and such have this so you know when an event like a click has occurred. Any pseudo code would be helpful and I am working in Android (not XML fluff), but again, this probably is not a very specific question, just an inquiry on how to go about this.

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• Unity 3D in 11.10 with VirtualBox in OS X?

  - by Roshambo

  I'm having a horrible time with Unity 3D in Ubuntu 11.10 running in a VirtualBox VM in OS X. Such a hard time, in fact, that I'm about to give up and conclude that it simply isn't possible to use Ubuntu 3D in a configuration like this. The problem with is that windows simply do not render. I've found that killing Nautilus makes the problem go away, but that's really not much of a solution. I have installed the guest additions and am running the VM with 2048 MB RAM, 128 MB video memory, and have enabled 3D acceleration. I've tried all this on several Macintoshes, with no luck. Unity 2D, on the other hand, works fine across the board. Any advice or experience would be greatly appreciated.

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• SQL SERVER Stored Procedure and Transactions

  I just overheard the following statement – “I do not use Transactions in SQL as I use Stored Procedure“. I just realized that there are so many misconceptions about this subject. Transactions has nothing to do with Stored Procedures. Let me demonstrate that with a simple example. USE tempdb GO --Create3TestTables CREATETABLE TABLE1 (ID INT); [...]...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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• Is it safe to run multiple XNA ContentManager instances on multiple threads?

  - by Boinst

  My XNA project currently uses one ContentManager instance, and one dedicated background thread for loading all content. I wonder, would it be safe to have multiple ContentManager instances, each in it's own dedicated thread, loading different content at the same time? I'm prompted to ask this question because this article makes the following statement: If there are two textures created at the same time on different threads, they will clobber the other and you will end up with some garbage in the textures. I think that what the author is saying here, is that if I access one ContentManager simultaneously on two threads, I'll get garbage. But what if I have separate ContentManager instances for each thread? If no-one knows the answer already from experience, I'll go ahead and try it and see what happens.

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