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• Lost the Hard Drive Icon from the Launcher

  - by Elbe

  I unlocked the C Drive icon connected to the Launcher. Once I moved it onto the desktop, it disappeared. In attempting to create an new icon, I was asked to create a mount point. The mount point directory then showed 2 links rather than the normal 1. I trolled the web for solutions, but I did not find one that addressed any of the stated issues. I attempted to find a solution to reconstruct the hard drives that were found during the install and listed in the Launcher but was unsuccessful in doing so. In summary, I would like to restore the /media directory to the original install which listed the drives correctly and have the drive icons appear in the Launcher as they did at the time of the installation of Ubuntu. I found where all the other icons in the Launcher located in the home Desktop directory but could not find anything that listed the hard drives or the floppy. Ubuntu 12.10 is installed and all the latest updates have been applied.

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• Should I just always Convert.ToInt32 my integers to account for potential nullable integers?

  - by Rowan Freeman

  If my MSSQL database contains a data type that is NULL (i.e. null is allowed) then ORMs, such as EntityFramework in my case, create .NET objects that are nullable. This is great, and the way I use nullables is like this: C# int? someInt = 5; int newInt = someInt.Value; // woot VB.NET Dim someInt As Integer? Dim newInt As Integer = someInt.Value ' hooray However, recently I had to make a change to the database to make an Id field no longer NULL (nullable). This means that .Value is now broken. This is a nuisance if the Id property is used a lot. One solution that I thought of is to just use Convert.ToInt32 on Id fields so it doesn't matter if an int is nullable or not. C# int newInt = Convert.ToInt32(someInt); // always compiles VB.NET Dim newInt As Integer = Convert.ToInt32(someInt) ' always compiles Is this a bad approach and are there any alternatives?

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• Register now for the FREE Tech Days Online Conference January 20th

  - by Eric Nelson

  The perfect solution to the “January blues” is a good solid few hours learning about great technology. The 'Build an app for that' Online Conference is exactly that, featuring demo-rich sessions on building applications for the browser, Windows 7, and Windows Phone 7. There are three tracks letting you choose which sessions are most relevant to you - whether you're just considering client development with Silverlight, or you've already got stuck in to an advanced project. We'll also explore new form factors such as Phone and Slate, and how to develop touch-based applications. Finally we'll cover the important subject of how to create beautifully designed user interfaces. Register now Agenda:

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• How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender

  - by user827992

  I would like to export a 3D model with each part having a name or a label if you will. For example i would like to export a model of an human body and name each part in specifics vertex groups like: left hand, right hand, right foot, head, ears, ... and you got the idea; so i can have a single 3D model that i can explode in various parts if needed. If there is a better technique about how to mark vertex groups in a 3D file please share your solution. As 3D editor i use Blender.

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• How to to let Google know about dynamic content?

  - by Yaniv

  Im looking for the best practice to let Google know about a vast number of dynamically created content. Let's say (I mean - dream) that I'm Facebook, and I want to let Google to index all the users' posts. Sitemap.xml may be the answer for this but they are limited to 50,000 URLs in each site map. I know that I can create 500 sitemaps and create a sitemap for sitemaps, but they are also limited, 25,000,000 URLS sounds quite enough at the moment, but could cause problems in the future. I.E - stackoverflow already has 3 Million posts, probably sitemap is not the solution for them. Creating a page with paging, and links to all the dynamic data. i guess this is what stackoverflow did by creating this page here: http://stackoverflow.com/questions So I think that Option 2 is the answer, but it seems to me that sitemaps might have some added value. So what should i do?

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• Friday Spotlight: Oracle Secure Global Desktop and amitego VISULOX

  - by Chris Kawalek

  Happy Friday! Our spotlight this week is a screencast about a fantastic solution that takes the security model of Oracle Secure Global Desktop and adds even more features. If you work in environments where you need to have a video record of users' interactions with applications, or need to ensure that two users can remotely work on the same session (a worker entering data in a form from one workstation and a manager typing an authorization code from another, for example), amitego VISULOX can do this and a lot more. It's built on top of Oracle Secure Global Desktop, so you get all of the great features there, plus additional unique security related features provided by VISULOX. Click the thumbnail below to watch the screencast. We'll see you next week! -Chris 

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• Is there any program (or code, any language) that will mute all of the microphones on my computer?

  - by Sean

  Is there any program (or code, any language) that will mute all of the microphones on my computer? If it is code, please make it as simple as possible, the only language I know is C# and I am still VERY new to it. I just want to setup some way to mute my microphones from a hotkey/shortcut, and if I can just find a program that can do, I will be set. As I said, I can also do a little bit if it is in C#, but the only code I have seen before for this, was miles long (atleast to me). My goal, is I just want a program that opens up, and toggles the mute on the microhpones (all of the system audio input) then closes. That is it, very simple. Thank you to anyone who trys to helps me! EDIT: Yes, I am using Windows. I am using Windows 7 32-bit. I already know that I can go into the volume mixer and do it that way, but I need to do this while running a full screen application, and it is a hassle to have to exit fullscreen, open the volume mixer, the click the mute icon, then go back into full screen and the the whole thing over again to unmute it. And I will be toggling back and forth quite often, so it just takes alot to do that so much.

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• Printing in booklet fomat

  - by To Do

  In the past I had a printer that had the booklet format option that would print the document two pages at a time ordered in a way that folding the whole printout would produce a booklet which could be stapled in the middle. My current printer does not support this feature. I would like to use some utility or script to convert an A4 pdf to an A5 booklet one. I found this page but I'm getting an error : pdfjam ERROR: can't find pdflatex! How do I get past this issue? Does anybody know of any other solution? I'm on Ubuntu 12.10 AMD64

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• RESTful API design - should a PUT return related data?

  - by alexmcroberts

  I have an API which allows a user to update their system status; and a separate call to retrieve system status updates from other users. Would it make sense to unify them under a PUT request where a user would request a PUT update with their own status update, and they would receive the status updates of other users? My solution would allow the PUT request to call the GET request method internally. The reason behind this is that when a user updates their system status they should be informed of other users status immediately, and I don't feel that having 2 seperate requests is necessary - and should be optional. I intend to keep the GET request for other users status as a status update for a user is not necessarily required in order to retrieve other users status', but once they update their own status is it vital that they get information about other users.

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• Have you used a Framework/Lib whose LGPL License? if yes, what are the impressions of your customers?

  - by Smarty Twiti

  I am trying to make my first app for sale, I would like to ask some questions for those who have already sold their software: Have you used a Framework/Lib whose LGPL License? if yes, what are the impressions of your customers? for example, if your customers/ competitors from the market reveal technology/secrets that you used in your solution (as LGPL requires that you make a Dynamic Link (.DLL) for your libs and you clearly tell the use of a Lib/Framework). Full story: For my project, I used a framework LGPL/commercial (Dual License) the second one it was too expensive (about 3000 USD) which pushed me to use LGPL however I still concerned. That is why I ask for advise and especially motivations.

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• Google Cloud Platform : nouvelles fonctionnalités, augmentation des capacités des centres de données et réduction des prix

  Google Cloud Platform : nouvelles fonctionnalités réduction des prix et augmentation des capacités des centres de données en Europe Google a apporté une mise à jour importante à son offre Google Cloud Platform. Google Cloud Platform est une suite de solution Cloud computing (SaaS et IaaS) pour les développeurs, les entreprises et biens plus. L'offre comprend les plateformes : App Engine, Cloud Storage, BigQuery, Compute Engine, Cloud SQL, etc. Compute Engine, l'offre IaaS (Infrastructure as a Service) de l'éditeur dévoilée en juin dernier avec quatre types d'instances, s'enrichit de 36 nouveaux types d'instances, avec à la clé une réduction générale des prix. De...

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• Is It bad for SEO to have internal redirected links? [closed]

  - by Jonas Lindqvist

  I have a large number of pages having similar but not identical content. Example: site.com/dream_dictionary_flying and site.com/dream_interpretation_flying. The problem is that although not being identical, they are sometimes on the edge of being duplicate content. The solution via redirect 301 in htaccess is simple and can be done in a minute, BUT, changing all existing links on the whole site from "/something" to "/something_else" would take ages, it would be thousands of manual changes taking x hundreds of hours. My question is this; is it bad for SEO to have internal links that are redirected, or rather HOW bad is it? For the human user it would not matter at all but from what I have experienced, the search engines don't like it. Is there any rule of thumb here? Please come back with your thoughts and experience on this. Thanks!

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• CSS3PS : de Photoshop à la feuille de style grâce à un nouveau plug-in

  Convertissez vos calques Photoshop en CSS3 grâce à ce nouveau plugin Un nouveau plugin pour Photoshop vient de voir le jour : CSS3Ps. Ce plugin, entièrement gratuit, vous permettra de générer le plus simplement du monde du code CSS à partir de calques sous Photoshop. Il n'est pas rare, dans le monde du web design, de vouloir adapter des créations graphiques pour le design d'un site. Malheureusement, il est bien souvent compliqué de passer d'une image créée sous Photoshop à un style en CSS. La solution la plus simple étant d'utiliser l'image directement, mais cela ne permet aucune souplesse en terme de code CSS. Et c'est justement cette souplesse qu'appo...

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• *Hidden Features* in your operating system that increase productivity?

  - by AdityaGameProgrammer

  As developers how much time, or do you spend time, In learning the hidden features tricks of your operating system ? How important do you feel is this for productivity in day to day programming? tasks. What do you mean when you list knowledge of an OS in your resume? What are your most useful hidden -less known features For example: A common problem of How can i open the cmd window in a specific location a do it yourself solution in say xp and what to do if something breaks Or are these something you look into as and when you find the need to do so?

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• How to handle loading and keeping many bitmaps in an Android 2D game

  - by Lumis

  In an Android 2D game which is using SurfaceView where its onDraw is driven by a loop from a Thread, I use many bitmap sprites (sprite sheets) and two background size bitmaps, which are all loaded into memory at the start. It all works fine, however, when the activity is onPause or after reloading it few times, Android shows a tendency to wipe out the big bitmaps only, probably to free memory. Sometimes this happens even in the middle of loading this very activity. In order to counter this, I made a check in the onDraw method to test if the big bitmaps are still there and reload them if they are forcefully recycled by Android, before drawing them on Canvas. This solution may not be the most stable, and since I know that there are much more accomplished android game programmers here than myself, I hope you can reveal some tricks or secrets or at least provide some good hints, how to overcome this.

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• Zookeeper naming service [closed]

  - by kolchanov

  I need a recommendation for naming service implementation. We are ISV and we have a lot of applications (services) with very different protocols such as http (Rest), low level tcp, amqp, diameter, telco protocols Rx, Ry, Ud and many others. We want to simplify configuration, deployment and service discovery procees and it seems that It's time to create central configuration registry. So I have few questions: - is zookeeper suitable for this purpose? - does exists more suitable and more special solution? - best practice for service naming for discoverin. Any standards? - recommendation for service configuration data structure Also we are keeping in mind future tasks For dynamic application distribution in a private cloud. Could you share your real life experience?

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• Install a Mirror without downloading all the packages in the official repository

  - by Sam

  I first gonna explain the situation : ( The two PCs are running Ubuntu 12.04 ) I have a Laptop which is connected to a wifi connection, and a Desktop which can not be connected to Internet ( the modem is too far from it ), and i want to install some software to the last one. ( the two PCs are connected with an Ethernet cable ) I've already searched for a solution, but all i found was the use of some softwares that should have been already installed on the "Internet-less PC". ( Keryx, APTonCD ... ) What I want to do is to create a mirror in my laptop which contain the packages i have in this one ( situated in /var/cache/apt/archive ) and i don't want to download all the packages from the official repository, I don't need them. Can someone tell me if this is possible ? Thank you.

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• Wireless Connection Troubles

  - by James

  I just recently switched from Windows 7 over to Ubuntu 12.04 and have been experiencing some issues connecting to my home's wireless network. The only way I can get it to connect to the network is by disabling IPv4 and IPv6 settings. Even then while it says its connected to the network (3 bars), I'm unable to access the Internet. It connected for a little while after I first installed Ubuntu, but after the first reboot I haven't been able to access the web at all. I have very basic knowledge when it comes to computers and barely any when dealing with Ubuntu and Linux. I'm very happy with Ubuntu apart from this one issue, as before my computer was overheating and crashing, I've yet to experience any of those problems since installing Ubuntu. The information I can give may be very limited since I'm having to use my cell phone to figure out the solution to this. Any help would be greatly appreciated. Thanks in advance!

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• Wordpress with user login and file manager support

  - by Don

  This may be a RTFM kind of thing, so I'll apologize up front. I've been asked by a friend I used to freelance for if there's a solution in Wordpress where users an login, then they can upload their own files in a "my docs" kind of thing. I've never used WP, so before I dig into their info I thought I'd see if anyone here can confirm or maybe point me to a resource. It's one of those "I'll look up at lunch and get back to you" things, which is why I'm bugging you all before reading the docs. Thanks

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• Migrating Linux user data to Windows profiles automatically

  - by scott ryan

  I have what seems to be an incredibly simple problem with a very simple solution but I'm having some trouble connecting dots. I have an aging server running Ubuntu Server which hosts roaming profiles. I am switching to a Windows Server 2012 DS shortly. Users used to be named firstinitial.lastname and we are switching to firstname.lastname. I need to transfer things like favorites, documents, etc. from the roaming Linux profile to the user's local Windows profile. So, the way I think it'd work is by using a login script. I think I'd use a script to mount the Linux server's /home for each user, then do copy to various paths (documents, pictures, etc.). But, how do I automate this for each user that logs in? I'm working with a nonprofit, so doing this by hand would probably be out of their budget. I'm open to suggestions, though. What I want is basically Windows Easy Migration, but I'm fairly certain that won't work under Wine... (Kidding, I promise). Thanks!

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• What performance degradation to expect with Nginx over raw Gunicorn+Gevent?

  - by bouke

  I'm trying to get a very high performing webserver setup for handling long-polling, websockets etc. I have a VM running (Rackspace) with 1GB RAM / 4 cores. I've setup a very simple gunicorn 'hello world' application with (async) gevent workers. In front of gunicorn, I put Nginx with a simple proxy to Gunicorn. Using ab, Gunicorn spits out 7700 requests/sec, where Nginx only does a 5000 request/sec. Is such a performance degradation expected? Hello world: #!/usr/bin/env python def application(environ, start_response): start_response("200 OK", [("Content-type", "text/plain")]) return [ "Hello World!" ] Gunicorn: gunicorn -w8 -k gevent --keep-alive 60 application:application Nginx (stripped): user www-data; worker_processes 4; pid /var/run/nginx.pid; events { worker_connections 768; } http { sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; upstream app_server { server 127.0.0.1:8000 fail_timeout=0; } server { listen 8080 default; keepalive_timeout 5; root /home/app/app/static; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://app_server; } } } Benchmark: (results: nginx TCP, nginx UNIX, gunicorn) ab -c 32 -n 12000 -k http://localhost:[8000|8080]/ Running gunicorn over a unix socket gives somewhat higher throughput (5500 r/s), but it still does't match raw gunicorn's performance.

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• Radeon HD 6290 terrible performance on a certified laptop

  - by dac

  I bought Asus K53U laptop, which is Ubuntu certified with pre-installed 11.10. The graphic card is Radeon HD 6290 but 720p playback is terrible. Even page scrolling in Firefox is very laggy. Proprietary drivers are installed by default. How is this possible, why is the laptop Ubuntu certified if the performance is poor? Any solution to this? I just did apt-get autoremove, and after that, this message came out in terminal: Error inserting vesafb (/lib/modules/3.0.0-15-generic/kernel/drivers/video/vesafb.ko): No such device Could that be the problem?

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• Primary domain in vps has been deactivated

  - by manix

  This is my scenario: I have a vps with two domains (example1.com, example2.com). When I started with this vps I set example1.com as primary domain and the nameserver were configured with the pattern ns1.example.com, ns2.example1.com. The domains were brought in name.com. Across the time, I usually only work whit the domain example2.com, for that reason I stopped to pay example1.com anual registration and just keep the example2.com. But, today my vps is unreacheable because the main domain was deactivated last ago 23th. I never imagined that it could affect my server. So, I am so worried because I don't know if rebuild the vps is the solution here because I could lost my data. Can you take me to the right direction in order to recover my vps?

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• Automatically switch to workspace with active application

  - by Pit

  Hi, I currently have 4 workspaces. If I have a pidgin chat window open on one workspace that is currently not active and I get a message in that already open chat window, I want do be able to click on the green envelope symbol in the upper menu-bar and be switched to the workspace the window is situated. Currently if I click on the green envelope symbol there will be appear a button on the lower menu-bar on which I have to click to be switched to the other workspace. Same with opening links. If in some application I click on a link the last activated Firefox window will open the link. Even this last active firebox window is on a currently not active workspace, and there is a Firefox window on the currently active workspace. So either open the link in the Firefox on the currently active workspace, or switch to the workspace on which the link was opened. Is/are there any solution(s) to this problem?

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• What algorithms would suit image colour summarization? [on hold]

  - by codecowboy

  I would like to analyse a set of hundreds of thousands of product images (clothing, electronic goods etc) and retrieve the dominant colours in each. I'm only interested in the top 3 or 4 colours. The aim is to achieve a degree of certainty that x image is mostly red or image y is mostly orange and blue. The images are likely to be colour jpegs of reasonable quality and approximately 100kb in size. I would like to use C# and the solution should run on a Linux server, preferably using open source libraries. What image processing algorithms or techniques might help me achieve this?

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