I had access to a Gambit Scheme REPL from my running application, either on the simulator or the device itself. This means that, in combination with Emacs, I wa

I had access to a Gambit Scheme REPL from my running application, either on the simulator or the device itself. This means that, in combination with Emacs, I was able to develop my game in real-time. Literally. I was able to write code and immediately send it to my running 3d game. I'm currently working on the justin.tv iphone app, in Objectionable-C using XCode. I've gotten into a pattern of changing a few lines of code, pressing the build-and-run button, switching to Chrome and reading Hacker News for a minute or so, and finally checking the debug log output in XCode. As much as I enjoy reading HN, a REPL on the iphone would be so so awesome.