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Code Completion for MacRuby / PyObjC / RubyMotion

One of Xcode's most powerful features is the completion of Intellisense , which displays a list of potential candidates by entering the name Foundation / Cocoa / UIKit API. I'm very interested in MacRuby , PyObjC , or later RubyMotion , however, without code completion, these tools seem to be more problems than they are worth it.

Is there any code completion feature (not necessarily Intellisense) for any of the three above technologies for any text editor (but preferably for Vim or Xcode)? Bonus points for an IDE solution that allows you to create and run an application in one command (for example, the Xcode Run button).

As I understand it, Xcode 4 has dropped support for MacRuby / PyObjC, so Intellisense is no longer available. Should I install Xcode 3 along with Xcode 4 to complete the code? How does everyone do this (of course, you guys are using some form of code completion - I can't believe anyone can remember all the classes in Foundation / Cocoa / UIKit)?

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RubyMotion comes with vi ctag support. Run rake ctagsto create them.

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FWIW, there is a code completion package for Sublime Text 2, which can also be installed through the Sublime package manager.

And it seems to work fine for me.

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Yes, you can provide Vim termination code by running $ rake ctagsRubyMotion in the root directory of your application. To take this step further, when creating a new RubyMotion application, use a shell script to automatically generate ctags . This article shows how to create a script like this:

http://rayhightower.com/blog/2013/02/12/automatic-ctags-with-rubymotion-and-vim/

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