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  • How do I implement multiple kinds of an object in OOP?

    - by Jeremy Rudd
    I have multiple kinds of an object, say Car for example. Do I have each kind in an inherited class/subclass of Car? Do I place these under a cartype namespace so as not to mess up the main namespace? Then later when I need an array of cars, should I declare it as var currentCars():Car or var currentCars():Object? Would the former support any subclass of Car?

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  • Can User have more than one roles in asp.net

    - by madness800
    I'm developing a web application I want to use the role authentication to control different parts of the website accessibility. But my problem is say I implemented a upload and download functionality on one of the page and I want to have the ability to control a user whether they can either upload or download; or both. So, I'm not exactly sure if the role base authentication can support a user with more than one role to work the way I want it.

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  • Can nullptr be emulated in gcc?

    - by nuzz
    I saw that nullptr was implemented in Visual Studio 2010. I like the concept and want to start using it as soon as possible; however GCC does not support it yet. My code needs to run on both (but doesn't have to compile with other compilers). Is there a way to "emulate" it? Something like: #define nullptr NULL (but obviously that wouldn't work well at all, I was simply showing what I meant).

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  • How to turn off autosignin of registered transports in Openfire ?

    - by Jacques René Mesrine
    This is regarding the gateway XEP 0100 support in Openfire. I have noticed that for some transports, they are auto-signed in once a connection to openfire succeeds (via the xmpp user). This applies specifically to QQ. How does one turn off this auto-signin feature ? Basically from a client perspective, I want to be able to signin selectively. So when I create an XMPPConnection to openfire, all transports should remain signed off until I send directed Presences to transports.

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  • Glassfish v3 logging

    - by George Liolios
    How to in Glassfish v3 can use stdout and stderr in Primary Key class the glassfish server log ($GF_HOME/domains/domain1/logs/server.log).Is there a setting that has to be turned or do applications now have to support their own logging?

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  • Version of SQLite used in Android?

    - by Eno
    Reason: Im wondering how to handle schema migrations. The newer SQLite versions support an "ALTER TABLE" SQL command which would save me having to copy data, drop the table, recreate table and re-insert data.

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  • OK Programming language from USB stick with no installation

    - by tovare
    I'm looking for a compiler or interpreter for a language with basic math support and File IO which can be executed directly from a memorystick in either Linux or Windows. Built in functionality for basic datastructures and sorting/searching would be a plus. (I've read about movable python, but it only supports windows) Thank you

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  • Where can I find the list of all SQL-standard-mandated aggregate functions? [on hold]

    - by einpoklum
    I know that different DBMSes support different aggregate functions; for example: MySQL's aggregates Oracle's aggregates I want to get the list of aggregates mandated by the SQL standard. Or, to be more precise, the lists of mandatory aggregates for SQL 1992, 1998, 2003, 2008 and 2011 - with 2011 being the most important to me. Edit: Of course if I buy a copy of the standards I could compile these lists myself. My question is whether they're accessible somewhere online.

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  • Convet from line points to shape points

    - by VOX
    I have an array of points that make up a line. However I need to draw the line with the width of n pixels. How can I transform that points for lines to points for polygon (or a shape) so I can directly draw it on canvas. I'm developing two program at the same time, one is j2me and another is .NET CF. j2me doesn't support drawing lines with width. Please take a look at the picture. link text

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  • nokogiri vs hpricot?

    - by roshan
    Which one would you choose? My important attributes are (not in order) Support & Future enhancements Community & general knowledge base (on the Internet) Comprehensive (i.e proven to parse a wide range of *.*ml pages) Performance Memory Footprint (runtime, not the code-base)

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  • mysql5.58 unstart server in mac os 10.6.5

    - by EdwardLau
    MySQL 5.5.8 uninstall MAC OS 10.6.5,restart computer is message “/Library/StartupItems/MySQLCOM” has not been started because it does not have the proper security settings. i set sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit /usr/local/mysql/support-files/mysql.server Locate the configuration defining the basedir and set the following : basedir=/usr/local/mysql datadir=/usr/local/mysql/data bug i click the mysql preference start mysql server isn't start and i sudo chown -R root:wheel /Library/StartupItems/MySQLCOM and restart again ,not warning message but mysql server not start ,why?

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  • Eclipse: Is it possible to have CDT and Java IDE together

    - by hhafez
    Hi I have an Eclipse CDT enviroment up and running and customised just the way I like it. I'm also going to be heavily dealing with java soon and I don't want to install a seperate version of Eclipse just to get the java features as I'll be switching between C-C++-ADA-Java quite often so I'd wont the one IDE to support all languages. At the moment I've got C/C++ and Ada working together (CDT + GNAT workbench). How can I get the Eclipse Java IDE with out installing eclipse from scratch again. Thanks

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  • Setting existing cookies to use with libcurl

    - by Dave18
    does current version of libcurl support firefox 3.0 and above cookies file (cookies.sqlite) ? I'm trying to set the file to allow cookies to be used when retrieving the data from web address. int return_val = curl_easy_setopt(hCurl, CURLOPT_COOKIEFILE, \..\cookies.sqlite); return_val is zero but i don't get to see the expected data.

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  • Need help with this SQL

    - by Bragaadeesh
    Hi guys, I am very very new to mysql. I am trying to execute the following query. update share set holder = 22 where SHARE_ID IN (select SHARE_ID from SHARE WHERE holder=1 LIMIT 10) When I try to execute the above query I am getting this error #1235 - This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

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  • [ipad] Is there a SDK for the photo gallery?

    - by Rafael Steil
    The "Photos.app" in iPad has a gallery that you can browse all photos, including support for slideshow and other things. I'd like to know if this API is available (aka, not private) and which one it is (so I won't need to implement one photo gallery from scratch). I looked at http://github.com/facebook/three20, but I'm not sure if it is the same thing. Thank.

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  • How to write a spinlock without using CAS

    - by Martin
    Following on from a discussion which got going in the comments of this question. How would one go about writing a Spinlock without CAS operations? As the other question states: The memory ordering model is such that writes will be atomic (if two concurrent threads write a memory location at the same time, the result will be one or the other). The platform will not support atomic compare-and-set operations.

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  • Entity Framework + stored procedure with paging

    - by Eatdoku
    I am using Entity Framework now and using a stored procedure to populate my entity. Where there is no problem with populating my entity, but when i trying to bind the result to a gridview control with "Enable Paging" set to true, it gives an error saying "The data source does not support server-side data paging." I am using stored procedure because one of the table column is FullTextIndexed, and there is a requirement to be able to search on that field. Can anyone tell me how the paging would work in this situation?

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  • Nhibernate 3.0 and FluentNHibernate

    - by Keith Nicholas
    is anyone building the truck NHibernate and FluentNhibernate together? How's it working? are you using it for production systems? How is the Linq support? Is it nearly ready for release? Is there a nice and concise way to keep up to date with what is going on in the world of NHibernate? (ie, without having to read lots of blogs, and mailing lists )

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  • Simulating "focus" and "blur" in jQuery .live() method...

    - by Jonathan Sampson
    Update: As of jQuery 1.4, $.live() now supports focusin and focusout events. jQuery currently1 doesn't support "blur" or "focus" as arguments for the $.live() method. What type of work-around could I implement to achieve the following: $("textarea") .live("focus", function() { foo = "bar"; }) .live("blur", function() { foo = "fizz"; }); 1. 07/29/2009, version 1.3.2

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  • SQL: Update a column with multiple values with single query

    - by Sandeep Jindal
    Hi, I have an update query like following: update table TABLE1 set COL1 = 'X' where COL2 = 'Y' ---1 Support the values 'X' and 'Y' are fetched from database now TABLE2. E.g. select COL1, COL2 from TABLE2. ----2 I want to update table TABLE1 with values from TABLE2. Just to make it more clear, assume that TABLE2 has following values: Can you please help me in doing this in a single query!

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