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• How do I remove Ubuntu from a dual-boot Windows 7 laptop?

  - by Alex

  Im new to Ubuntu and liked it a lot! however after testing it on my old crappy laptop i now want to remove it. Ive looked at tutorials on how to uninstall and it says to start by deleting the linux partition of the hard drive.however after opening Computer management, I cannot locate my linux partition. same as when I go to System Configuration, and click on the "boot" tab, my computer does not list any operating system other than Windows 7. Any Way around this or perhaps a different way to uninstall?

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• How to deploy a single website to multiple physical servers.?

  - by user70122

  I want to deploy my PHP and Ajax based Dating website to multiple physical servers. Does anyone know the method. Is there possible any method to save the files and setting (and also the user input), on all of the physical server, so that the servers do the following jobs. Servers used as a network, speeding up the process giving a robust thing to the end user. Data to be stored on all the servers' hard drivers, and Every server have the internet connection from different provider, so for example a. if any of the internet providers gets down, or b. there occur any hardware or power failure, the website still runs, without a break and without any data loss. Does anyone know about some online course, or some comprehensive tutorials about this topic ?

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• Grouping IP Addresses based on ranges [on hold]

  - by mustard

  Say I have 5 different categories based on IP Address ranges for monitoring user base. What is the best way to categorize a list of input IP addresses into one of the 5 categories depending on which range it falls into? Would sorting using a segment tree structure be efficient? Specifically - I'm looking to see if there are more efficient ways to sort IP addresses into groups or ranges than using a segment sort. Example: I have a list of IP address ranges per country from http://dev.maxmind.com/geoip/legacy/geolite/ I am trying to group incoming user requests on a website per country for demographic analysis. My current approach is to use a segment tree structure for the IP address ranges and use lookups based on the structure to identify which range a given ip address belongs to. I would like to know if there is a better way of accomplishing this.

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• How to make safe and secure forms in asp.net MVC 3

  - by anirudha

  the asp.net application need all kind of security. unsecure forms may be influence by XSS [cross site scripting] there is some way to solve these type of problem in MVC. first sollution is that use <%= Html.AntiForgeryToken() %> for make secure from cross site scripting. it’s work by machine key in MVC. well you can valid them whenever you got respond from client. you can apply by this attribute on action you give the response behalf of form submission [ValidateAntiForgeryToken] you can secondly use authorize attribute where you can make own definition of authorize attribute in asp.net mvc for more info read david’s post well I am use my own custom attribute who use a different type of authorization :- the who controller use a attribute I put their and the attribute I put their have a logic and logic check the cookie in request who make sure that request they got from user.

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• java developer who wants to raise skill level for better career growth [closed]

  - by Rahul Shivsharan

  I have an experience in Java language and in JEE related Framework for about 5 years. In these 5 years i have worked on Core java, Spring, Hibernate, JPA, Struts 1. Now just to be prepared for the near future, i am thinking to learn some new programming language or some new technology, this will help me out to be a more elligible employee. So my question to you is, which new technology or language should i learn, my target is for next 3 years. So just in case if Java fades out (thought it won't) than i can jump on to this newly learned stuff. Where should i start from ? Should i learn some other language in JVM like Scala, Clojure, Groovy, JRuby ? Or should i learn some altogether different language like Python or Erlang, Perl ? Or new technology which is related to NoSQL, like MongoDB, Hadoop, CouchDB. Or learn few current happening things in market like RoR, Node.js, LessCss or Sass, Coffee Script ? Can anybody give me some hint,

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• Data structures for a 3D array

  - by Smallbro

  Currently I've been using a 3D array for my tiles in a 2D world but the 3D side comes in when moving down into caves and whatnot. Now this is not memory efficient and I switched over to a 2D array and can now have much larger maps. The only issue I'm having now is that it seems that my tiles cannot occupy the same space as a tile on the same z level. My current structure means that each block has its own z variable. This is what it used to look like: map.blockData[x][y][z] = new Block(); however now it works like this map.blockData[x][y] = new Block(z); I'm not sure why but if I decide to use the same space on say the floor below it wont allow me to. Does anyone have any ideas on how I can add a z-axis to my 2D array? I'm using java but I reckon the concept carries across different languages.

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• Will Google harm my ad's rating if my display URL in adwords does not exist?

  - by Jubbat

  I have a service in a very big city, and to make my ads stand out, I display the name of the neighborhood in the display URL, although the actual URL is always the same page with my services for any neighborhood. Will google decrease my rating for this? In a different note, you can also express your ideas about if it's sensible to do this or not, ie, the client might feel I'm deceiving them. Although this will be subjective, unless there is some scientific study. Thank you!

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• Best practices for launching a new software version

  - by steve

  I rebuilt a web app to replace a version that we have been using for the last 3-4 years. We have a few thousand clients and a few hundred active users per day. The functionality is basically the same. The new version is a little bit faster with a few enhancement features and there are a lot of behind the scenes changes that the clients will never see. The UI is quite different but ultimately much easier to use and navigate. How should I go about having our clients stop using the old system and start using the new one? I am currently putting together a video that will play on the web site as well as within the app. The video will go through the pages and focus on some key changes. I was also thinking about an intro page that will display once the user logs in and explains some of the features.

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• Is it okay to have many Abstract classes in your application?

  - by JoseK

  We initially wanted to implement a Strategy pattern with varying implementations of the methods in a commmon interface. These will get picked up at runtime based on user inputs. As it's turned out, we're having Abstract classes implementing 3 - 5 common methods and only one method left for a varying implementation i.e. the Strategy. Update: By many abstract classes I mean there are 6 different high level functionalities i.e. 6 packages , and each has it's Interface + AbstractImpl + (series of Actual Impl). Is this a bad design in any way? Any negative views in terms of later extensibility - I'm preparing for a code/design review with seniors.

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• Dual-boot question involving separate HD and windows 8

  - by user286976

  I use an external HD with Ubuntu+GRUB on it. This allows me to effectively "hijack" most systems. Basically it's a permanent LiveUSB - my own system wherever I go. I use it for recovery mainly when Windows systems muck up, and for portability (as I can have my system on the go, without effecting the pc I'm borrowing, much like a LiveCD). I'm about to update to Windows 8 now [on a new, different computer]. Is there any special measure I should take to do this? I've seen a similar post here, but the OP had both harddrives plugged in simultaneously - that's not exactly my setup. Thank you :) EDIT: added for clarification that this is for a totally new computer.

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• What is the correct way to reset and load new data into GL_ARRAY_BUFFER?

  - by Geto

  I am using an array buffer for colors data. If I want to load different colors for the current mesh in real time what is the correct way to do it. At the moment I am doing: glBindVertexArray(vao); glBindBuffer(GL_ARRAY_BUFFER, colorBuffer); glBufferData(GL_ARRAY_BUFFER, SIZE, colorsData, GL_STATIC_DRAW); glEnableVertexAttribArray(shader->attrib("color")); glVertexAttribPointer(shader->attrib("color"), 3, GL_FLOAT, GL_TRUE, 0, NULL); glBindBuffer(GL_ARRAY_BUFFER, 0); It works, but I am not sure if this is good and efficient way to do it. What happens to the previous data ? Does it write on top of it ? Do I need to call : glDeleteBuffers(1, colorBuffer); glGenBuffers(1, colorBuffer); before transfering the new data into the buffer ?

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• dual display breaks unity

  - by dougleduck

  I find that most of the time, when I plug in my Dell 19" monitor with an HDMI lead, unity can't decide on the configuration; it will switch between different resolutions, and setups every 2-30 setusecond until I either ctrl-alt-backspace or unity crashes so I have to hard boot. Alternatively all the windows decorations and unity get killed. My setup is 11.10 64 bit,Dell Vostro 3550, AMD Radeon HD 6630M 1GB, Intel Core i5-2520M processor 2.50 GHz with integrated graphics card Currently I don't think the Radeon graphics card is working properly, but I'm not sure.

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• Should I work for free while applying for a job?

  - by Jevgeni Bogatyrjov

  An employer usually asks a candidate to do a small project at home ("homework") as a part of applying for a job. Last time I applied for a job (as a web developer), there were aproximately 10 applicants who were all given different tasks. Despite the fact that there was only one vacancy, the company used the work of all of the candidates in one of its projects. Actually, it is quite reasonable for a company to create these "vacancies" just to make people work for free - I estimate, that aproximately 2 weeks of programmer's work was saved with all of the job applications that company had on one vacancy. Is this a common practice and how can you protect yourself from working for free in the future? Have you seen this during your career?

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• SEO penalty for landing page redirects

  - by therealsix

  Using ebay as an example- lets say I have a large number of items whose URLs' look like this: cgi.ebay.com/ebaymotors/1981-VW-Vanagon-manual-seats-seven-/250953153841 I want to give my client the ability to put links to these items on their website EASILY, without knowing or checking my URL. So I created a redirect service that will map their identifier with my URL: ebay.com/fake_redirect_service/shared_identifier9918 would redirect to the link above. This works great- my clients can easily setup these links with information they already have, and the user will see the page as usual. So on to the problem... I'm concerned that this redirecting service will have a negative impact on my SEO ranking. Having a landing page redirect you immediately to a different URL seems like something a typical spam site would do. Will this hurt me? Any better solutions?

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• screen blacks out after pressing a key on keyboard, specially enter key

  - by ahmad598

  I have natty, and i have installed kubuntu-desktop package. before installing it, everything was fine but after that, this thing happens: when I'm typing, after stroking a key, screen blacks out, fan speeds up, and i have to turn off machine by pressing power button. it just happens in many different apps (chromium, hotot, kde proxy settings, ...) and in every environment: unity, kde, gnome 2. i don't know what details i must provide with this question, and i don't like to remove my kde desktop, or re-install my ubuntu. any ideas are appreciated ;-)

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• Simple moving object jitters every couple of seconds [on hold]

  - by Liam

  I'm trying to get smooth movement in my game, right now every couple of seconds the moving square jitters. I'm using C++ with SDL2. I made a very simple project to test different methods so all that's happening is a box moves across the screen. Here's a pastebin of the code http://pastebin.com/7YxxSw0D Here's a link to a dropbox folder containing the 'game' https://www.dropbox.com/sh/0ygntl140qv8iv0/AABVuuk6khArOJmdBi1OaFlua?dl=0 Any input would be greatly appreciated, and let me know if you need any more info. Thanks!

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• Alternative Web model

  - by Above The Gods

  One of the problems web apps have against native apps, especially on the mobile front, is the constant need to re-download each web page on request. Ultimately, this leads to slower performance. Why if web apps only download new pages if they're actually needed, not because they're simply requested. For example: perhaps the server can store a web page version in a cookie. Every slight change to the page on the server-side changes the version number. Now instead of the browser requesting a new page each time, why not just check the version number and have the server send the page if they're different? If the page similar, the user can just use a cached page. I'm sure browsers doesn't necessarily have to change to accommodate changes to this, correct?

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• Installing Ubuntu 13.10 'Saucy Salamander' on L75D-A7280 hangs on a black screen

  - by Riven

  Trying to get Ubuntu 13.10 to work and it will not. Seen that somebody is having a similar problem, some things failing then it just hangs on a black screen (after pressing F1 to see what it's doing). My system is a Toshiba Satellite L75D-A7280, and I have tried two different files that I had downloaded from Ubuntu.com with no luck. My laptop came with Windows 8 and following the dual-boot directions Ubuntu 12.04 was installed and worked perfect, except for completely obliterating Windows 8 and voiding my warranty, meaning neither Toshiba nor the retail center I bought my system from can help me legally, besides giving advice... nor can I return it to get a non-UEFI based system. I really need to figure this out, I am a student and need my laptop working properly with any OS I put on it. Will continue searching for any information I can find.

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• Drawing map tiles for iPhone game

  - by user17778

  I'm working on a turn-based strategy game for the iPhone that has a hexagon-grid based map in it. I'm in the process of drawing up the actual tiles for the different landscapes (i.e. forest, grassland, etc.) and was wondering what program to draw the tile images in. I would assume Adobe Illustrator since a vector-based image may allow for smooth images even when the user is zoomed in really close. Is this right? Thanks!

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• Joomla: Prevent certain user from visiting a certain page

  - by MrB

  I have an internal section in my Joomla only for "Registered" users. There they can edit preferences. Multiple users can access the same preferences (different stakeholders). Now I have "smithcorp" and "smithcorp_guest". They should both be able to view the same things, but "smithcorp_guest" shouldn't be able to edit the preferences. Is there a way to forbid "smithcorp_guest" access to this page? I have only seen access regulation via the user level, i.e. unregistered, registered, admin. Thanks, MrB

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• ASP.NET RedirectPermanent Method using C# and VB.NET

  301 redirection is essential for the best user experience. If something on your website has been changed or moved to a new permanent location, users will need to be permanently redirected. In addition, search engines can follow this type of redirection, and this redirected-to page will now be the one to rank in Google or other search engines, replacing the old page. There are different ways to implement the RedirectPermanent method. This tutorial will illustrate these common techniques with sample VB.NET or C# code. Creating the Sample ASP.NET 4.0 Website RedirectPermanent is new in ASP.NET 4....

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• How to prioritize tasks when you have multiple programming projects running in parallel?

  - by Vinko Vrsalovic

  Say you have 5 customers, you develop 2 or 3 different projects for each. Each project has Xi tasks. Each project takes from 2 to 10 man weeks. Given that there are few resources, it is desired to minimize the management overhead. Two questions in this scenario: What tools would you use to prioritize the tasks and track their completion, while tending to minimize the overhead? What criteria would you take into consideration to determine which task to assign to the next available resource given that the primary objective is to increase throughput (more projects finished per time unit, this objective conflicts with starting one project and finishing it and then moving on to the next)? Ideas, management techniques, algorithms are welcome

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• Set modified date = created date or null on record creation?

  - by User

  I've been following the convention of adding created and modified columns to most of my database tables. I also have been leaving the modified column as null on record creation and only setting a value on actual modification. The other alternative is to set the modified date to be equal to created date on record creation. I've been doing it the former way but I recent ran into one con which is seriously making me think of switching. I needed to set a database cache dependency to find out if any existing data has been changed or new data added. Instead of being able to do the following: SELECT MAX(modified) FROM customer I have to do this: SELECT GREATEST(MAX(created), MAX(modified)) FROM customer The negative being that it's a more complicated query and slower. Another thing is in file systems I believe they usually use the second convention of setting modified date = created date on creation. What are the pros and cons of the different methods? That is, what are the issues to consider?

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• Don’t Like New Google Search Interface? Switch To Old Interface

  - by Gopinath

  Google recently adopted a new user interface layout for it’s search engine. The new layout is very different to classic one, it provides many options on the left side to choose for enhanced search operations. Even though many users like this new interface, there are few who are more comfortable with the classic interface. If you are one among those who wanted to switch back to classic interface, you can access it by using the following http://www.google.com/webhp?hl=all Join us on Facebook to read all our stories right inside your Facebook news feed.

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• Wordpress does not create directories?

  - by Marcappuccino

  First I will just tell you how my wordpress hierarchy looks like: /var/www has all of the wordpress files, which is different from how it is normally set up as /var/www/wordpress (symlinked to /usr/share/wordpress). So var/www contains all of the files that /usr/share/wordpress would have, and /usr/share/wordpress is symlinked to /var/www, with an extra /var/www/wordpress symlinked to /var/www to prevent possible compatibility issues. When uploading a file like a favicon or a .zip-ped theme, everything works fine, and when checking if the theme/favicon is uploaded, wordpress shows that it is, and points to a directory that it thinks that it had created, like http:/localhost/wp-content/uploads/2012/..., which it had not, because the uploads folder is empty! And so there is a broken link on the internet and the theme is displayed but it has just plain text (because it had reverted to a plain theme I think) Please help! I am sorry for such a long post but this is really quite a troublesome problem. I have chowned /var/www and /usr/share/wordpress to www-data.

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