It wouldn't work because the <i>processes</i> of coding and writing are different. In writing, yes, "keeping the hand moving" is important. If you're stuck, a good way to get unstuck is to just keep writing, and wait for your subconscious to hit upon something that your conscious mind can use as a seed to craft a story around.<p>Programming is not at all like that. In programming, getting "stuck" is a signal to <i>stop</i> writing code. Its a signal to stop and rethink your approach, or at least step back and think about the problem before jumping back into coding. You can't write yourself out of a programming problem, but you certainly can write yourself into one.
Why would you need an online service to do that, if the point is just to write code for you that you're not going to share with anyone? Or did I miss something?<p>(I don't understand the point of 750words.com either, for that matter, except if you're not satisfied with a text file and quick scripts for reminders and word counts: but if you want to do a diary like 750words.com about coding and getting your hands dirty, why wouldn't people just code the thing they want?)
My most common scenario for kick-starting my creative coding is to bust open the REPL and brain dump the more difficult concepts just to see if they're feasible. I use the REPL so I can quickly debug code and see immediate results.<p>There's no way I could just jot down 750 words of code without having executed it <i>at least</i> once. Normally, I'd probably have executed my code every 10 new words of code - so like, 75 times by the time I write 750 words. I just don't see a non-REPL editor helping me in this way.<p>I know there are in-browser REPLs for languages like Ruby and Python, etc. Perhaps if it had one of those in it, or something, then it'd make more sense for me to try it.