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• How come many of the AppShowdown apps aren't available in Ubuntu anymore?

  - by kermit666

  After upgrading to 12.10 I've noticed that I can't install some of the nice apps created for the AppShowdown, such as: Cuttlefish Blubphone (Lightread also came out quite late in 12.10) It seems such a waste having these great new apps added to the repository, only to exclude them in the first next version. I'm wondering why aren't these apps automatically available in a newer version of Ubuntu. Is it simply that the API is so different that it requires major rewrites and programmer activity or is it some bureaucratic reason? Are there any plans to improve this process?

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• Can't Login to my PC

  - by user68775

  Hope u solve my problem. I am new to Ubuntu. I tried to install Ubuntu 12.04 in my pc which is way old because friends told me that it could be installed in any machine. I dually installed ubuntu along with Windows XP. After installation i get a message "Run ubuntu in low graphics" I gave yes and then i was asked for userid and Password. But i keep getting the same UserID page even though i gave the corrent UserID and Password. Is there any solution you can provide. This is my first experience with Ubuntu.

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• Any tips/tricks/resources on actually TEACHING a class on OOP? [closed]

  - by Sempus

  I may slowly be getting into teaching an Object-Orientated Programming class at my school in a year or two. I just graduated and work at my school as an Application Programmer. I'd first start off as a TA/grader and then slowly move into the Professor role. The class would be in Java. I always see resources on this fine site about HOW to program, but does anyone know any tips/tricks/resources on how to TEACH a programming class? It would be full of all different skills levels(but still semi-technical) so it would have to be a little more understandable than if it was just CS kids.

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• What is the purpose of a logic question test in an IT Job Interview? [closed]

  - by KPO

  I went to interview a week ago for an IT position pertaining to tech support at Ameriprise. I applied and they liked my resume and experience. They then asked me to come in for the "first base." I went in and they gave me 20 logic questions out of which I got 9 correct. After that he told me that they will call me to let me know in 1 week. Does getting 9/20 right on a test like that means I will be rejected OR is it a way for them to know how I think? Please let me know. Thanks!

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• How do you stay in touch with a programming language?

  - by Abijeet Patro

  I'll be starting work for the first time in the IT Industry on the 18th of this month. I'll be working mostly with Microsoft technologies such as C#.NET and MS Dynamic CRM. I spent the last year working with C++. Developing small applications to automate taks and organize my notes. During this time I have developed a good basic understanding of the language. My question is how do you guys stay in touch with a programming language that you love when you need to use something else at the office?

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• F# - When do you use a class instead of a record when you do not want to use mutable fields?

  - by fairflow

  I'm imagining a situation where you are creating an F# module in a purely functional style. This means objects do not have mutable fields and are not modified in place. I'm assuming for simplicity that there is no need to use .NET objects or other kinds of objects. There are two possible ways of implementing an object-oriented kind of solution: the first is to use type classes and the second to use records which have fields of functional type, to implement methods. I imagine you'd use classes when you want to use inheritance but that otherwise records would be adequate, if perhaps clumsier to express. Or do you find classes more convenient than records in any case?

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• SSMS Slow To Save

  - by Bunch

  When using SSMS 2008 I found it to be really slow when trying to save a file, even a small one with just some simple SELECT statements on it. The symptoms were the flashing save disk icons in the lower right corner and selecting the location to save in the Save File dialog would hang each time I picked a location (e.g. Libraries, a folder). This was the first I had seen anything like this where it was really, really slow. It ended up that a server had died last week and I was still mapping a drive to it. SSMS was still trying to connect to it causing the slow down (further information here and here). Once I removed that the save functionality worked like it should. Tags: SQL

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• CellC data card not recognized if I boot with it in

  - by Armien

  In 11.10 I find that I can connect to the internet via broadband connection successfully. The problem is that I cannot have the data card attached to the machine while the machine boots up. If I leave the data card in the machine during startup, the data card is not picked up and I then cannot connect to the internet. I must first boot up my machine, login, attach the data card into the usb port, wait so 30 seconds. The broadband connection name will then appear in the network dropdown at the top of the screen. An internet connect is now possible via broadband. Please let me know what must be done to fix this.

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• How is this paradigm/style called?

  - by McMannus

  I have the following situation: I'm developing an add-in for a UML modeling tool. The models that can be created by the user are stored inside the main application and a limited access to the models is given through its API. However, the add-in has a lot of callbacks for events that are triggered by the main application, when changes to the model occur by the user. Since the models are already stored once in the main application, I considered it not practicable to duplicate the models in the add-in, which leads to the fact that I have only behavior in the add-in, rather than having a state. This behavior is mainly expressed by static functions, that are organized in functional cohesive classes. The callbacks for the events have always references to the model elements relevant for the specifc event that ocurred. First, it seemed to me that this is a procedural style in general, but procedural style doesn't consider events/callbacks, so this boils down to the question. How is this programming style called?

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• NDC 2010 Day 0

  Today I arrived in Oslo, Norway with a colleague for Norwegian Developer Conference. This is my first visit and the agenda looks very good. Id hoped for a little more diversity and some more local Norwegian heros, but Ill chat with them during the breaks instead (thats where the interesting stuff happens, isnt it). Day [...]...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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• Installer Preview: Smarter, Faster And Sexier v2010 vol 1

  Check out the images below of the updated DXperience v2010.1 Unified .NET Installer. First lets review some of the changes: Smarter This installer will work for both Visual Studio 2008 and 2010. Because some of the features and products will only work in VS2010, the installer will automatically enable and disable the products based on the IDE and .NET frameworks installed. More on this below. The installer now uses Visual Studios built-in ASP.NET Development Server to simplify using our...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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• Vector transform equation explanation

  - by cyberdemon

  I'm trying to understand the maths of moving points in a 3d space by making a game written in C#. I'm looking at this wolfire blog series which explains some basic 3d maths. I've read the first two parts but am stuck on the 3rd. I know it's all really rudimentary stuff but I find Googling for help with equations really hard. The one I'm struggling with is: 0*(0.66,0.75) + 2*(-0.75, 0.66) = (-1.5, 1.3) How can anything multiplied by 0 not be 0? So my question is how does this look in code: x(a,b) + y(c,d) I know it's basic stuff but I just can't see it.

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• Lock file/content while being edited in browser. [migrated]

  - by codescope

  In one of my projects users are allowed to edit the same file. It is group work and max number of users in group is 4. It is rare that they will be editing at the same time but there is possibility of it. I am using ckeditor which displays the content. how I can lock the content while it is being edited? For the above case what will happen if one users open the content for editing and then never saves and leave window open. Is it possible to save the content, release the lock for editing by another users? If first user comes back to desk they should see the message that "content has been changed, please refresh". I am using php, mysql. Thanks

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• Ubuntu 12.04 ATI 6450

  - by user210717

  Right now my video card isn't responding after the Ubuntu Logo is shown, (I see a black screen and that's it) I have installed ubuntu 12.04 AMD64 and if I remove the video card and use the VGA from the MOBO then I can use it with no problems, other data: 4 GB of ram 1333 500 GB WD AMD APU A6 3500 2,1 GHZ I forgot a couple of details, everything was working great until last night, when the light went off (I don't know if I'm explaining myself I'm from Argentina and english isn't my first language there was a power cut I meant) and then when it got back I used my pc until I went to bed (after upgrading) and this morning, when I woke up I had this problem for breakfast, I've been reading a little and I had a similar problem before and fixed it, but it was a system problem, a missing package or something, I don't remember, but here the only issue is that the video card doesn't give me image after the ubuntu logo.

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• Opening programs very slow on ubuntu 12.10

  - by Mislav Blaževic

  When I open any program for first time after boot, it loads VERY slowly (Doesn't matter how long after boot). For example, terminal takes 2-3 seconds, skype and firefox often take much longer. If I close it and open again, it loads in reasonable time (<1 second). I got Intel Core i5-2500K CPU @ 3.30GHz, so it shouldn't be hardware issue... What is causing this? Disk benchmark: Average read time: 115.5 MB/s (100 samples) Average write time: 98.7 MB/s (100 samples) Average access time: 11.79 msec (1000 samples)

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• Do You Want be on Silverlight TV?

  Silverlight is surging and Silverlight TV is also doing well on Channel 9 and gaining momentum thanks to all of you who watch our episodes! Ive been asked a few times how community members can appear on the show. First, we love community members appearing on the show. Some of our best episodes have come from the community efforts. So here are 2 general guidelines for submitting your appearance on Silverlight TV: You are going to be on the Redmond campus in the future You have something incredibly...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 create a manager class without global variables nor singletons?

  - by Omega

  I would like to implement some kind of manager class in my application. It will be in charge of loading textures, processing them, distributing them etc... At first, I wanted to make a global variable that simply contains an instance of my manager class. I found this question: http://stackoverflow.com/questions/4646577/global-variables-in-java. However, the users there seem to recommend to never use global variables. Fine then, I once heard about Singletons, so I though I could use that instead. I mean, creating just one instance of my manager class sounds good. However, I found this other question: When is Singleton appropriate?, which basically tells me that Singletons are, in most scenarios, some kind of anti-pattern. Now I am a bit lost - what other approach can I take to create my manager class, whose only requirement is to be accessible from anywhere?

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• Create a HotSpot which requires a username and password

  - by Trumbun

  I wish to set up a wireless access point which requires a username and password in order for clients to use the internet. The network setup will be internet modem connected to an Ubuntu Server (2 networks cards). The first network cards to get the internet to the server and the second network card to connect the the wifi hotspot. The server will host the software such as (Example software for windows) which will control the user connected by forcing them to login with the credentials given at the reception. Can some suggest some software that I can use? Thanks in advance

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• Softwares required after installing ubuntu 12.10

  - by user104096

  For the first time, i have installed ubuntu in my laptop. I have installed the latest version i.e 12.10, but i am facing the following issues after installation. 1.I could not connect my reliance data card to it. 2.If i play a song it is asking me python software to install. 3.Also could not find the players in it. hence can any one please let me know the necessary softwares for a new linux user. Can any one please help me out in learning new things in linux..

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• Game Object Design

  - by oisin

  I'm having a problem with the way I designed my first simple game in C++. I have GameObject (abstract class) and ObjectA which inherits the update() and draw() methods from GameObject. My main loop contains a linked list of GameObject*, and while that list is not empty it cycles through it, calling update on each one. Up until this point, I thought the design was standard(?) and would work. However, when I call update on ObjectA() I run into two problems: ObjectA can die which messes up the list, which in turn throws off the loop in main. ObjectA can spawn more ObjectA's but these are local scope and the update() goes out of scope, creating problems in main's list of GameObjects. I think my design if alright, but I'm having such problems with segmentation faults that there must be something seriously wrong with at least one part of my implementation. If anyone could point out any serious mistakes or simple examples of this being done (or even alternative designs) then I would greatly appreciate it!

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• Goings On

  The last several weeks have been pretty hectic for me. First, Visual Studio 2010 and .NET Framework 4 shipped. Of course, only those living in caves and under rocks missed that bit of news. However, that event forced me to leave my own cave and make a few public appearances. April 12-15 - DevConnections, Las Vegas One thing that I love about the Bellagio is how they go out of their way to make me comfortable by naming their convention center rooms after the...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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• Site Suspended -message at my site and Facebook fan page? [on hold]

  - by Jere_Sumell

  I'm writing blog at Wordpress, and bought Domain park for it for a shorter web address for my readers who I redirect to my blog. Yesterday there was a first time message titled "Account Suspended due to registration information verification failure". I've never changed my contact information at my Web Host, and my contact Information has not been changed. I have Fan page on Facebook too, that my readers' could follow my blog easier, and there was same kind of message on my Facebook site too. Can you tell me, what's going on? I've not been broking any terms of use at my host, and writing good language on my blog. I think it's a some kind of hacker -thing? Is there nothing else to do than contact my web host that they can fix the problem? Can they? I Contacted last night my host, but got no answer yet.

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• Software purchases & accounts issue

  - by user1735003

  I have installed 13.10 on a new computer and want to tranfer my purchase (Braid) there. I have read this page about how to do this. However, when I log in to https://software-center.ubuntu.com/subscriptions, nothing appears. My guess is that when I purchased this game, I used an older email address than the one I am currently using. Ideally I would like to be able to transfer this purchase to my current ubuntu one account. Or, if this is not possible, at least to have a chance to know with which account this purchase has been done so I can have a try to reinstall it somewhere else. NB: In the Ubuntu Software Center on my older computer the game is still there and marked as "already purchased". EDIT: This is not an upgrade issue, as my old computer has not been upgraded to 13.10, and my newer computer is, well, new, 13.10 being its first OS. Note that I don't see my purchases on the software center web site on my old as well as my new computer, which makes sense.

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• I need to get past my permissions to recover data

  - by adsmz

  Due to some mishaps, I am unable to boot into Kubuntu at all. However, my data is still on the hard drive. I managed to get one of the other two computers to which I have access to read the disk by booting into a liveCD session of kubuntu. The only storage medium to which I have access is a 30 GB data stick. Here's where the trouble starts: In music alone, I have to back up about 60 GB. Obviously this is going to have to be split into chunks and moved over to the second spare PC until I can reinstall Kubuntu on my laptop. All of the data that needs backed up is behind a permissions wall, so while I can view it, I can't interact with it directly. I know copying and moving through the terminal can get around this with sudo cp or sudo mv, but is there a way to first compress multiple folders in a single archive, then move it? (While we're on the subject, what compression method would be best for large volumes of music in MP3, WAV, and OGG format?)

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• is it valid that a state machine can have more than one possible state for some transition?

  - by shankbond

  I have a requirement for a workflow which I am trying to model as a state machine, I see that there is more than one outcome of a given transition(or activity). Is it valid for a state machine to have more than one possible states, but only one state will be true at a given time? Note: This is my first attempt to model a state machine. Eg. might be: s1-t1-s2 s1-t1-s3 s1-t1-s4 where s1, s2, s3, s4 are states and t1 is transition/activity. A fictitious real world example might be: For a human, there can be two states: hungry, not hungry A basket can have only one item from: apple, orange. So, to model it we will have: hungry-pick from basket-apple found hungry-pick from basket-orange found apple found-eat-not hungry orange found-take juice out of it and then drink- not hungry

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