This is a really great little guide for people that want to try out a Scheme but are paralyzed by the options. This will help those in need find a starting point. I highly recommend GNU Guile, the implementation that the author co-maintains.
Please don't do this on HN. Even if it's true, the health points it knocks out of the discourse are more valuable than the truth that it adds. The thing to do with comments that suck is downvote them. If you have a factual correction to add, that's great, but let it stand on its own. ("Guile uses the LGPL, note the 'L'." is just fine.)
I've never used it myself, but fwiw Gauche also advertises support for native threads. SRFI-18 threads are wrapped around pthreads on Unixy platforms, and Windows threads on Windows. http://practical-scheme.net/gauche/man/gauche-refe_106.html
Ah, I was not clear enough: native SMP threads, as in each thread accessing the same shared memory heap. Gauche allocates a new VM for each thread ... ah, but I see it has data synchronization primitives. I believe it has moved forward since the last time I checked it, years ago.
Thanks for the tip!
Repeated from the other reply on Guile: Hmmm, now I'll have to narrow the statement to "The only native code compiling Scheme that I know of" (which is harder to do).
If you play Philip Glass' Einstein on the Beach while using it, it will not be happy!
(We were roommates when he launched the GNU project, and he did not like that title, it would wake him out of a sound sleep. Which, if you've listened to it, is perfectly understandable, it's very minimalist, an acquired taste he did not share :-).
Hmmm, so it does, and as suiting its niche, at a low level. See above WRT Gauche; from a skim of the manual, Guile's VM may be reentrant or it hides that level of detail.
Thanks for the tip!
Hmmm, now I'll have to narrow the statement to "The only native code compiling Scheme that I know of" (which is harder to do).
A bit of googling turned up this pricing sheet where Chez Scheme is listed on page 88 (it says $65 per unit or $325 for 10, so buy your Chez's in bulk!):
From whom can you go to buy a copy, and is it still under development?
The web site doesn't look like it's been touched since 2011, and Google searches constrained by site:cisco.com turn up nothing. Other searching showed no signs of life.
