On 2011-04-03, at 7:47 PM, John Velman wrote:
I've tinkered with learning scheme off and on for years, but never had enough incentive to stick to it. Now, with Pixie Scheme III, a real programming language implementation, on the iPad, I'm taking another shot at Scheme.
My main computer is an iMac running OS X 10.6.7; My Xcode is 3.2.5; I have the iOS development kit, but haven't yet started any apps for iPad/iPhone. Right now I'm working on a couple of OS X cocoa apps (in addition to coming up to speed on Scheme).
I'd like to be able to do two things with Scheme, hopefully without a lot of difficulty:
- Develop OS X applications in Xcode, using C libraries written in Scheme
for the Model part of MVC, and Cocoa doing the, with Cocoa doing the View-Controller stuff.
Are there any good examples or tutorials available for generating, with Gambit Scheme, C-Library routines that can be copied into an Xcode project and then used with minimum modification to the Xcode project?
You should look at examples/iOS in the Gambit source code. It is an example, with Xcode-project for implementing the "Gambit REPL" app for iPhone/iPad. The "main" function and the GUI stuff are written in Objective-C. The REPL and event handling are done in Scheme.
The basic idea is that you first need to compile the Gambit runtime library (to give lib/libgambc.a) with a normal "make" of Gambit. Then you write your Xcode project in Objective-C, and you add the library lib/libgambc.a to the project. Finally, make sure you initialize the Gambit runtime with a call to ___setup.
- I have an application I'm developing (in Cocoa for OS X) mainly to
explore some math concepts I'm interested in, for my own use. Since it is by nature exploratory, it seems like a good idea to have an extension language. Scheme seems like a good choice.
Are there any good examples or tutorials that would get me started using Gambit to add an embedded extension language to an Xcode project?
The "Gambit REPL" app would be a good example of this!
Marc