[Larceny-users] svn checkout failure

2009-05-05 Thread Marijn Schouten (hkBst)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, the svn checkout failed for me today. $ svn checkout https://trac.ccs.neu.edu/svn/larceny/trunk/larceny_src svn: OPTIONS of 'https://trac.ccs.neu.edu/svn/larceny/trunk/larceny_src': could not connect to server (https://trac.ccs.neu.edu) $ svn

[Larceny-users] using macros to handcode random walk in arbitrary dimension

2009-05-05 Thread Marijn Schouten (hkBst)
Hi, I am trying to write a program that will iterate over all random walks of a certain fixed depth on a grid of a certain dimension DIM. There are exactly (expt (* 2 (DIM)) depth)) such random walks and I would like to calculate the mean squared length of them at a certain depth. The answer is

Re: [Larceny-users] [plt-scheme] Re: side effects in R6RS modules

2009-05-05 Thread William D Clinger
Matthias Felleisen wrote: For whatever reasons, the editors moved the only piece of mathematics semantics (which doesn't include modules and macros) to the appendix, for reasons that still escape me. Well, they don't really. If you don't have a tool for arbitrating two distinct interpretations