Feb. 25th, 2008

dtm: (Default)
Yeah, yeah. Haven't posted in two months, blah blah blah.

And this isn't going to be a life update post either. Sorry. People who are not CS types (and this is much more academic CS than practical CS stuff) should just skip this post.

Now, I present some gloriously ridiculous, useless code, done primarily to show that I could do this in java, and do so in a typesafe manner.
A demonstration of the Y-combinator in java )
Well that was a bit interesting. Get you head around how it works, if you've never worked all the way through the Y combinator before. The relevant wikipedia article might be useful. The translation from scheme to java was fairly straightforward; the trick was getting all the types to work out properly.

But wait, there's more! That code there isn't really reuseable at all. What's really needed is a version that works with arbitrary types:
A generic version )
Oh, and for those of you worried that I'm giving away internal Google secrets by using the interface com.google.common.base.Function, that's already been open-sourced as part of the Google Collections Library.

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