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• What is Covariance and Contravariance

  - by xyz

  Please explain me in simple terms (if possible simple example) the covariance and contravariance in c# .net . I know many are available(even in stackoverflow) but my problem is in which scenario I should use that is not explained in the articles that I am refering to. e.g. Covariance and Contravariance in Delegates (C# Programming Guide) Thanks

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• Alternative of touchesMoved in Unity3D

  - by Arman

  - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:touch.view]; CGPoint xLocation = CGPointMake(location.x,racquet_yellow.center.y); racquet_yellow.center = xLocation; } The above event move recquet_yellow(UIImageView) with mouse pointer, or when I move thumb on iPhone screen, I have 3D Object in Unity3D how can I move my object like recquet_yellow. Kindly guide me.

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• How to choose programming language for projects?

  - by bdhar

  This is a question I constantly encounter when I attend any technical forums / discussions / interviews. There is a similar article but it focuses on business merits as well. What I am looking for is a guide (not a checklist like this one which is abstract and not so accurate) which helps an architect to choose the programming language to implement a requirement. Is there a book or article available for the same purpose?

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• Entity Framework ObjectContext re-usage

  - by verror

  I'm learning EF now and have a question regarding the ObjectContext: Should I create instance of ObjectContext for every query (function) when I access the database? Or it's better to create it once (singleton) and reuse it? Before EF I was using enterprise library data access block and created instance of dataacess for DataAccess function...

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• About x86 architecture assembly and others

  - by caramel1991

  I have the wisdom to learn assembly language,so I search through the internet for the information about this language,and came across some page telling that assembly is a low level native language and varied from one to another processor,so I just wonder,I'm currently running an intel based processor,I've no idea whether it is x86 or what,but I just wanna know,Does it possible for me to learn other processor arhchitecture assembly on my pc??Besides,is there any good books that could guide me through learning the intel architecture assembly.

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• iphone sdk 3.0 requirements...

  - by Muhammad Adnan

  I have Mac OS X 10.5.8 and wanted to get its compatible iphone sdk version. i got iphone sdk 3.2 but lllater find out it requires 10.6.2 which i can't get for some reason. i just wanted to know where can i get (exact link if pssible) compatible version of iphone sdk for mac 10.5.8 ... no matter its iphone sdk 3.0 or 3.1 3.2... pls guide.. t hanks

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• About x86 architecture assembly and others

  - by caramel1991

  I have the wisdom to learn assembly language,so I search through the internet for the information about this language,and came across some page telling that assembly is a low level native language and varied from one to another processor,so I just wonder,I'm currently running an intel based processor,I've no idea whether it is x86 or what,but I just wanna know,Does it possible for me to learn other processor arhchitecture assembly on my pc??Besides,is there any good books that could guide me through learning the intel architecture assembly.

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• calling UIview methdods

  - by mindfreak

  I want to call this method in a user defined function (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation Is it possible ?? if yes,How ?? Pl. guide me.

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• What is difference between scripting languages and other languages

  - by Mirage

  I am really confused between different types of languages. Can any one guide what are diff types of languages or diff categories. Like some saying python is scripting langauge. Now what does that mean. Are other langueages like php , asp , java not scripting langauges

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• android : rss reader

  - by Puneet kaur

  hi , i am making google finance application and searching for the API's. i have found api on google finance site but there news also coming . i have tried to search but could not get the api for the news . can u please guide me in this regard. Thanks

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• Symfony with only FTP access

  - by Asaf

  Hello, I'm currently developing on my local pc, to which I have complete access of course. However to my production server I have only FTP access. Now, this step http://www.symfony-project.org/getting-started/1_4/en/05-Web-Server-Configuration On Symfony's installation guide, suggests that I need to edit the httpd.conf I was wondering if there's an alternative since I don't have access to it on production.

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• Locaization in Mac appln.

  - by Frederic Soreng

  Hi , I'm trying to add localization to my mac appln. with the localized files and xib for the danish language. When i compile it accepts danish key entries as expected but after the packaging the software it won't accpet any othe language besides the default "english" language. Please guide me if any one have worked out with this problem.

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• How do you display a binary search tree?

  - by fakeit

  I'm being asked to display a binary search tree in sorted order. The nodes of the tree contain strings. I'm not exactly sure what the best way is to attack this problem. Should I be traversing the tree and displaying as I go? Should I flatten the tree into an array and then use a sorting algorithm before I display? I'm not looking for the actual code, just a guide where to go next.

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• I want to download a file from a URL to save it. Any Rails way to do this or can I Ruby File Handlin

  - by alokswain

  I have a URL to a image which i want to save. I looked into ruby file handling and did not come across anything. Please guide me towards some links or blogs which talk about the same. I need to then use Paperclip to produce a thumbnail of this image to be used in my application.

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• want to know the exact size of a data contend in any specified url

  - by hardik

  hi all i want to know that while specifying url in my iphone native application for downloading purpose it works fine but if i want to know the exact size of data either in kb or in Mb coming from that url how could i do that plz guide me to do that demonstarting a sample code would be a big boost thanks

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• get username from Webservice

  - by Sathish

  Hi How can i get the username from the webservice my Webservice is configured under Enterprise sign on authentication. I am using the below code for webapplication Request.ServerVariables("HTTP_CT_REMOTE_USER") and i need a equavelent for webservices Context.Request.ServerVariables["HTTP_CT_REMOTE_USER"] returns null for me

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• natural language processing internships

  - by user552127

  Hi All, Pls someone guide me in finding paid Grad internships in Natural Language Processing over the summer. I am really interested in NLP/ML and have taken up the excellent course offered at my school in Fall. I would be glad to work for passionate startups that do actual NLP tasks such as semantic extraction (and not just information retrieval) etc. I have worked with Java and teaching myself Python in all NLP tasks. Thanks, Sanjay

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• Union and If Exists - not working together - Please help

  - by needshelp

  I need to get dummy values if they do no rows returned from table. The If exists works by itself, but gives error with a Union. Can someone please guide me with a solution or a workaround? create table test1 (col1 varchar(10)) create table test2 (col1 varchar(10)) create table test3 (col1 varchar(10)) insert test1 values ('test1-row1') insert test1 values ('test1-row2') insert test2 values ('test2-row1') insert test2 values ('test2-row2') select col1 from test1 union select col1 from test2 union if exists (select * from test3) select col1 from test3 else select 'dummy'

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• Objective-C categories in static library

  - by Vladimir

  Can you guide me how to properly link static library to iphone project. I use staic library project added to app project as direct dependency (target - general - direct dependecies) and all works OK, but categories. A category defined in static library is not working in app. So my question is how to add static library with some categories into other project? And in general, what is best practice to use in app project code from other projects?

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• Large Image in C#

  - by Modir

  Hi Friend I want to create large image by C#. (i have some photos with large size(4800 * 4800). i want merge these photos.) i use Bitmap but don't support. (Error : Invalid Parameter) Please guide me. THANKS

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• Store and retrieve html from sql server 2008 and display using ASP.NET MVC?

  - by VJ

  Hi all I am trying to store html and hyperlinks in my sql server 2008 database. I want to also be able to display the hyperlinks and render the html accordingly. I am trying to do this in ASP.NET MVC so I tried using HTTPUtility.HtmlEncode() method but didnt really store it thw way I wanted. So can anyone please guide me through the steps i need to take to achieve this.

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• Can we use javascript in C# ?

  - by Pari

  Hi, I want to use Javascript functionality in c#. Is it possible to use Javascript in c#? If yes how? Can anyone provide me some guide or sample code? Thanx

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• I cannot find "upgrade current target for ipad" in XCode

  - by syoleen

  I followed "iPad Programming Guide" from Apple to try to upgrade one of my iPhone project for iPad. But I cannot find the menu item of "upgrade current target for ipad" even after I selected one of the Targets. What is the reason? My SDK version is 3.1.3. Thank you. The screenshot is here

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• Creating a scripting language

  - by j-t-s

  Hi All Can somebody please guide me in the right direction of creating a scripting language that targets the WSH (Windows Scripting Host)? I have googled for it, but there seem to be far fewer links related to this than when I originally searched for it a few months back. THank you

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• How to setup IX webhosting for an ASP.net MVC procject.

  - by Em

  IXwebhosting has stated that they do support this functionailty but when the project is uploaded you cannot access any of the pages other than the home page. Does anyone have a good guide of how to do this?

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