[racket] why does in-indexed / in-range slow down my program?

From: Danny Yoo (dyoo at hashcollision.org)
Date: Sun Jan 20 19:58:05 EST 2013

On Sun, Jan 20, 2013 at 5:23 PM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
>
> I thought Limbo Peng wanted to measure the transliteration of some Go algorithm. Wasn't there a remark somewhere that said "there is a faster algorithm based on union-find"?


Oh!  I'm sorry.  I didn't even look at that part of Peng's email, and
missed the comment on a faster algorithm.  I had no idea what
"quick-find" or "quick-union" were.

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