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• Rails3: how to use relational algebra to replace SQL-constructions like NOT and OUTER JOIN

  - by petRUShka

  There are two models Post and Comment. I should get all posts, which have no comments with specific tag. How can I do this using new Rails 3 features such relational algebra (arel). SQL-solution should be something like this: SELECT `posts`.* FROM `posts` LEFT OUTER JOIN `comments` ON `posts`.`id` = `comments`.`post_id` WHERE NOT (`comments`.`tag` = 'my_tag')

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• Project summary - Source code lines

  - by MartyIX

  I'm looking for a tool that would count the number of files, the number of lines (with or without comments) and possibly other statistics for my project in PHP and JavaScript. Notes: I've already found SLOCCount which seems quite nice. It requires Cygwin. Yes, I can wrote a simple script for basic information but I'm looking for something more complex. Do you know about alternatives for Windows? Thanks!

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• Usernames are evil. How can I make Restful Authentication only require an email address and password

  - by Koning WWWWWWWWWWWWWWWWWWWWWWW

  As the title says: how can I use the Restful Authentication Plugin with Ruby on Rails. When I want to create a new user, it requires me to set the (wrong-named, confusing field) login (= username), email address and password. However, I want, like Facebook does, to require the user to enter only an email address and password, not a username. People will also login with this email address. Can anyone help me?

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• Having trouble using jQuery to set meta tag values

  - by Zhami

  I'm trying to set meta tags using jQuery (please don't reply that this doesn't make sense since search engines blah-blah-blah... I am loading invoking 3rd party Javascript functions that examine these vales, such as Tweetmeme and Facebook). If I use: $('meta[name=some-name]').attr('content', 'some value'); it does work to set the value of an existing meta tag, but does not create a meta tag if such a named one does not exist. If you have insight or experience with this, please reply...

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• PHP Extended CHM Manual Gone?

  - by Alix Axel

  I'm sorry for maybe posting a question that may not be directly related to programming but where can I find an up to date version of the Extended PHP Manual (the one with the user comments) for download? The usual URL (http://www.php.net/docs-echm.php) seems to redirect to the (http://www.php.net/download-docs.php), was it discontinued?

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• why develop in windows/desktop application?

  - by Alexander

  Just wondering what your comments are regarding the current trend as everything is moving to the web or even the cloud. The significance of an OS or desktop application is getting less attention than web application. So to those folks out there who still develop windows applications, such as WPF. Why still do it? Why not move to web programming? Silverlight instead for example...

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• How do I put a <div> box around my cursor on click?

  - by marcamillion

  I am trying re-create the facebook tagging functionality, where you click on an image and the part of the image you click on displays an empty box (or a square). Using jQuery, how do I make the box appear around my cursor on the click? Thanks

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• red5 and servlets: can i get HttpServerRequest and HttpServerResponse?

  - by ufk

  Hiya I'm trying to write an application for red5 that uses some servlet classes in order to package a requestion for facebook. the client side is a Adobe flash builder application. is it possible to send session information from the flex application in order for the red5 client side to create proper HttpServletRequest and HttpServletResponse objects? in tomcat the code would be: public void doGet (HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { HttpServletRequest request = (HttpServletRequest)req; HttpServletResponse response = (HttpServletResponse)res; ... }

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• Visual Studio 2010 - how to add next types in version resource menu?

  - by BarbieLie28

  Hi I switch from VS 2008, to VS 2010, but in VS 2010 I don't have types in "Add version" in resource, like: comments, legaltrademarks, privatebuild, specialbuild. How I can add this types to version on my program in Visual Studio 2010? (in pink I draw what have VS 2008). image: http://i48.tinypic.com/2mzlg5e.jpg BarbieLie28

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• how do i login to gmail via internet explorer using iwebbrowser 2

  - by omair iqbal

  is it possible to login to sites like facebook,gmail using iwebbrowser2? in the code below what can i add so that it can login to gmail(with ie8 as browser) using the username and password i put in a variable? MyBrowser := CreateOleObject('InternetExplorer.Application') as IWebBrowser2; MyBrowser.Navigate('http://mysite.com'..........???); note : i am a newbie. sorry for my english:) and thanks in advance

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• Django - Testing with parts of original database

  - by Murkin

  Hello everyone, My database has two types of entries: The very dynamic (users, comments, etc) and the more static (email templates, flat-pages). During testing I want a clean DB but with the real 'semi-static' data. Is there a way to make Django's testing system to load parts of the original DB ? Thanks

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• CSS Floating box problem

  - by Joe

  Can someone please explain to me why these boxes are not lined up? http://seoplannow.com/comments.html Thank you.

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• Listings in Latex with UTF-8 (or at least german umlauts)

  - by Janosch

  Trying to include a source-file into my latex document using the listings package, i got problems with german umlauts inside of the comments in the code. Using \lstset{ extendedchars=\true, inputencoding=utf8x } Umlauts in the source files (encoded in UTF-8 without BOM) are processed, but they are somehow moved to the beginning of the word they are contained in. So // die Größe muss berücksichtigt werden in the input source file, becomes // die ößGre muss übercksichtigt werden in the output file. NOTE: since i found errors in my initial setup, i heavily edited this question

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• why do people still use tables, inline css, et al?

  - by aharon

  When you learn HTML and so forth nowadays, the mantra is always "Clean code = better code". So why do sites like Mobile Me and Google and Facebook all use huge amounts of tables and other not-semantically correct code? Thanks!

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• how to write programs that they use advanced OpenType features?

  - by Sorush Rabiee

  How could I write a simple program using OpenType tables in order to dynamically render text? please answer in : assembly , C , C++ , C# , java or Python (and a little WPF:-) or introduce libraries of them. comments and answers about text rendering system of common Operating Systems, or designing text engines compatible with unicode 5.02 protocol are welcomed.

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• Correct way to model recursive relationship in Django

  - by Yuval A

  My application has two node types: a parent node which can hold recursive child nodes. Think of it like the post-comment system in SO, but comments can be recursive: parent_1 child_11 child_12 child_121 child_3 parent_2 child_21 child_211 child_2111 Important to note that the parent nodes have different attributes and behavior than the child nodes. What is the correct (and presumably most efficient) way of modeling this relationship in Django?

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• how to disable NumericUpDownExtender after first click?

  - by Ali

  I'm using NumericUpDownExtender inside updatepanel which is inside repeater displays comments on article. I use NumericUpDownExtender as thumbs up/down and I need to disable it after first click so that no one can rate the comment more than once. How can I do that? Thanks in advance for your help!

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• Cassandra or MySQL/PostgreSQL?

  - by Ivri

  Hi! I have huge database (kinda wordnet). And want to know if it's easier to use Cassandra instead of MySQL|PostrgreSQL All my life I was using MySQL and PostrgreSQL and I could easily think in terms of relational algebra, but several weeks ago I learned about cassandra and that it's used in facebook and twitter. Is it more convenient? What DBMS are usually used nowadays to store social net's data, relationships between objects, wordnet?

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• How do I protect against cross-site scripting?

  - by shahinkian

  I am using php, mysql with smarty and I places where users can put comments and etc. I've already escaped characters before inserting into database for SQL Injection. What else do I need to do?

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• SQL (MySQL) vs NoSQL (CouchDB)

  - by christopher-mccann

  I am in the middle of designing a highly-scalable application which must store a lot of data. Just for example it will store lots about users and then things like a lot of their messages, comments etc. I have always used MySQL before but now I am minded to try something new like couchdb or similar which is not SQL. Does anyone have any thoughts or guidance on this?

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• Open Technology: Nanorobots Answer to US Navy

  - by adrianocavalcanti

  Hi Everybody, Just wondering if some has some suggestion about open technology licensing. I have been working on nanotechnology -- here some info: * Nanorobot Technology: What to Expect from Science - A Personal Letter in Answer to United States Navy http://www.linuxquestions.org/questions/general-10/nanorobot-technology-what-to-expect-from-science-814060 and started an initiative towards open nanotechnology since last october. All comments and suggestions are highly appreciated.

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• iPhone App with Thirdparty Code - Licence Question

  - by disp

  What do I need to include if my iPhone App uses some third party code under an opensource licence for example BSD or MIT, before submitting for AppStore approval? Is it enough if I let original code with it's comments untouched or do I need to include a readme file where I describe that I used "xyz's framekwork under licence abc" or something like that?

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• how to create swipe through photos functionality in iPhone app

  - by Buffernet

  Hi, I want to be able to swipe through a series of images in my iPhone app like in the Photos app. I want to have the pictures reside on the phone in the app itself. I know the facebook three20 api does this but it reads the images from a url. Does anyone know how I can implement this functionality?

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• Using Full-Text-Search in order to find partial words (SQL SERVER 2008)

  - by dig

  Hello, I'm trying to build a facebook like search for my software. I'd like to query the table customers. I've set up a FULLTEXT Index and tried the next query SELECT * FROM Customer where CONTAINS(*,'*ann*') The query does return all the customers named Ann, but it doesn't return all the customers name Anne. Is there a way to create prefix search on SQL SERVER 2008 using FTS? Thanks.

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• DataContractSerializer vs XmlSerializer: Pros and Cons of each serializer

  - by Vitalie Climenco

  My desktop application serializes objects using XmlSerializer. I was suggested to leverage DataContractSerializer instead. Under which scenarios should I use DataContractSerializer? Many thanks Comments. 1. The output XML file is stored locally. No other applications deserialize objects from that XML file. 2. My application runs with .NET Framework 3.5 SP1.

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