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• Set a navigation controller without an app delegate

  - by Rodrigo

  I would like to show a Navigation Controller after clicking a button. Every tutorial assumes the navigation controller will be the first screen so it links it to the App Delegate, but App delegate only appears at MainWindow.xib. How do you guys add a navigation controller to a view different than the MainWindow? Thanks!

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• Canvas and HTML5: Supported Browsers?

  - by Paddy

  I am looking at using HTML5 Canvas element for my upcoming project. I want to know what all major browsers (including the versions!, cos i know that the latest builds do support canvas) support the Canvas tag. I don't give a damn about IE. So don't bother reporting IE. :) In this tutorial Drawing shapes - MDC, the quadraticCurveTo section says: quadraticCurveTo(cp1x, cp1y, x, y) // BROKEN in Firefox 1.5 (see work around below) Does that mean that Canvas is supported on Firefox 1.5 and above too?

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• How do I create a simple video editing filter for DirectShow or DMO?

  - by Ole Jak

  How do I create a simple video editing filter for DirectShow or DMO? What I need is simple - a tutorial or tutorials on how to create simple filter (like a brightness/contrast adjustment filter or any other pixel-per-pixel kind of filter) for filtering Direct Show Video astream (so I want to have a graph like "my Web Kamera" - "My photoshop like filter" - "rendering (or saving to file)".

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• PHP app\console wont work trying to create bundle for Symfony2

  - by user3461632

  I have installed Symfony2 on a iis 7 server with PHP 5.3.21 and everything works ok ( the php, the symphony demo page ). I try to create my own helloWorld, as the tutorial says : php app/console generate:bundle I go Start-Run-CMD and put that line of code and it gives me back this : could not open input file : app/console and before anyone asks i am in the project directory when i perform this command I put the PHP directory to the System PATH but the problem persists.

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• Printing user specified column from JTable

  - by technomage

  I have an application, and I would like to print a JTable, but since it has many columns, I would like user to select/limit which columns to print so it can fit in regular printer paper. I'm using JTable.print() function to print. (http://java.sun.com/docs/books/tutorial/uiswing/misc/printtable.html) Right now, my solution, is to create another JTable with the columns that user selected, then repopulate the table with the data, then send it to printer. Is there a better way to do it?

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• Resources for writing kernel in C

  - by anon

  I don't want to write my own boot loader -- happy to use Grub. I just want to implement pre-emptive multi threading, a basic file system, and virtual memory. I want something that can run on top of qemu. What's a good resource (book / tutorial) for accomplishing this goal? Thanks!

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• rails checkbox has_many is hunted

  - by sebajb

  check_box is hunted in rails; but I would like to select some objects and save the relationship to the database anyways. When I debug the code all I see is the value='on' instead of the value I want to save. Any Help or tutorial would be appreciated.

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• undefined local variable or method `user', using CarrierWave for profile images

  - by Amar H-V

  I've been following Ryan Bates' Railscasts tutorial on CarrierWave, which you can find here Everything works fine, except for when I go to view my profile, it gives me this error: undefined local variable or method `user' I don't know why it is telling me this, as I am using Devise for my authentication, and that is the name of my model. Below are some of the files which may be useful: https://gist.github.com/amarh21/7439421 I am using Rails 4.0.1 and ruby 2.0.0

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• How to do motion tracking of a object using video

  - by Niroshan

  Could someone direct me to a tutorial or guide me how to track motion of a object moving with 6 DOF. I am planing to use a video stream of a moving toy car. I want to calculate displacement and rotation angle of the toy car. I came across some research papers but couldn't find any libraries to the job. Is there a way to do this using OpenCV or Matlab or some other freely available software? Thank you

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• Eclipse refactoring tutorials

  - by jax

  Does anyone know of a website that has a tutorial and example of each Refactoring technique used in Eclipse? I can't find one.

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• how can i show multipoint toolbox

  - by mariam

  Hi all I am new to c# language and i need help from you, i downloaded the multipoint SDK when i saw the tutorial video i noticed that the multipoint toolbox doesn't appear in left of screen? how can i do it .... please i really need your help in this beacuse I am using it for my graducation project and i got really interseted in this software please help me and i really appreciate your help thanks in advance Mariam

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• How to use the same template for different query sets?

  - by knuckfubuck

  I'm new to Django and setting up my first site. I have a Share model and a template called share_list.html that uses an object_list like this: {% for object in object_list %} I setup haystack using their tutorial and the search template looks like this: {% for result in page.object_list %} I would like to modify the search.html template to have an include of the share_list so I don't have to repeat myself. How can I make it use the same object_list?

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• Ant XML Custom Result Formatter

  - by Iso

  Hi, Can anyone point me the tutorial for step by step creating my onw XML custom result formatter. I read that we can create our own result formatter by specifying the XSLT in styledir. I want to know what should specify in XSLT, like the xml tag for testsuite name, testcase name and the result. Thanks in advance

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• how do i know when to use a datasource or delegate protocol when using a UI object in my project?

  - by sarmenhba

  for example the UIPickerView, in the tutorial that i am learning i had to include the datasource and delegate protocols in my project for the pickerview to work. how would i know on other objects?

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• Try & Catch — How do you use them effectively?

  - by Kaji

  I've been trying to teach myself JavaScript, and one thing I was reading on is the try/catch structure. Unfortunately, the tutorial doesn't provide much explanation on how it would be useful, just how to set it up. Can anyone offer some insight?

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• create a 4x3 grid of css panels

  - by decbrad

  I am trying to find a CSS tutorial that would enable me to create a 4x3 grid of features like on this site http://www.ewedding.com/features.php If anybody can suggest one it would be great! All the tutorials that I have found seem to style the entire page rather that a particular part of the page. Thanks in advance Decbrad

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• advance/basic and smartphone views in Rails

  - by aleds

  In a new Rail app I have to consider 2 differents user's type: basic and Advanced and I have to create smartphone views( unique view for both user's type). Then I have 3 view/layout: - web advance - web basic - smartphone I already have the adv/basic flag for the user, and I followed the RBates tutorial http://asciicasts.com/episodes/199-mobile-devices. What is the best way to manage the 3 views/layout ?

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• what's the best way to learn C++ and Qt at the same time?

  - by Daniel Hill

  Hi I did A Google search and couldn't find anything, so I wanna learn Qt/C++ my University (I'm a first year CompSci Student) won't be teaching C++ next year which is a big disappointment I already know Python and dabbled in LaTeX, Javascript, C++ I'm currently helping out a free software project Clementine but it's programmed in Qt/C++ and I don't know enough of both to help out enough. Is there any tips, Tutorial, howtos out there?

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• about TranslateTransform and RenderTransformOrigin

  - by George2

  Hello everyone, I am using Silverlight 3.0 + .Net 3.5 + VSTS 2008 + C# to silverlight application. I want to learn TranslateTransform and RenderTransformOrigin, could anyone recommend me some tutorials? I am a newbie of this area. And I did not find anything which is good to learn for a newbie from MSDN (correct me if there are some good stuff). :-) BTW: I am headache about the coordination transformation matrix, it is great if the tutorial could cover this topic. thanks in advance, George

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• hash password in mssql (asp.net)

  - by ile

  Is this how hashed password stored in mssql should look like? This is function I use to hash password (I found it in some tutorial) public string EncryptPassword(string password) { //we use codepage 1252 because that is what sql server uses byte[] pwdBytes = Encoding.GetEncoding(1252).GetBytes(password); byte[] hashBytes = System.Security.Cryptography.MD5.Create().ComputeHash(pwdBytes); return Encoding.GetEncoding(1252).GetString(hashBytes); } Thanks, Ile

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• Is MobiForms for Android worth investigating ?

  - by Alan B

  I'm working my way through the NotePad tutorial, and that's all fine - I'm not a Java programmer but it's close enough to C# (or vice versa) to make it easy to pick up. I'm surprised that there aren't any RAD tools for Android apart from Mobiforms. Is there anyone out there with experience of Mobiforms ?

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• Attached properties to avoid custom controls

  - by Maurizio Reginelli

  I've heard about the possibility to use attached properties to avoid writing a custom control in WPF. Could you explain me how or address me to a tutorial? Thank you

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• django-admin.py startproject mysite not working well on windows 7

  - by john

  Hi I'm learning django and I did successfully start a site on Window XP by following the tutorial. However, on Window 7 when I issued: django-admin.py startproject mysite python.exe was started and a window appeared to ask me to choose either python.exe or other program to open a file.... did I do anthing wrong or there are more tricks for window 7? thanks.

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• WPF DataContext syntax - Convert from C# to VB

  - by hawbsl

  Currently working through a Teach Yourself WPF tutorial. Usually I can mentally convert from C# to VB without any problem but this C# syntax is unfamiliar. How is it written in VB? Private void Button_Click(object sender, RoutedEventArgs e) { ((Person)DataContext).FirstName = "blah blah" } My usual fave online converters are choking on this ... perhaps because they don't do WPF?

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• Problem designing google maps app in the application

  - by Rahul Varma

  I have seen the tutorial provided to display google maps here... http://developer.android.com/resources/tutorials/views/hello-mapview.html. But sadly when i try to extend MapActivity instead of Activity the whole program is getting ruined and showing errors starting from onCreate... Whats the solution and how could i get google maps working in my application???

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