nutshells/ contains example nutshell files, and compiled_ruletables/ contains their transpiled Golly-ruletable output;
filenames are shared between the two directories, so e.g. nutshells/bct.ruel transpiles to the file
under examples/bct.rule.
Transpilation is done with the -s and -c options, so the files in the latter directory have comments preceding each group of
@TABLE lines showing what Nutshell line (and specific snippet thereof) it came from as well as preserving the original Nutshell
file's comments where applicable.
Notable examples:
- Brainfuck; for more info, see here. This is a full implementation of Brainfuck as a cellular automaton, and it is in fact the rule that motivated Nutshell's existence in the first place.
- BML, or
"Biham–Middleton–Levine traffic model";
the very first Nutshell file ever written, transpiled initially by hand
(to prove whether the ideas worked on a general level) then later used as a sanity check for various iterations of the
transpiler. Note the
@RUELand@TABELsegment headers in that Gist; Nutshell was named 'rueltabel' in its early stages. - XHistory, a demo of inline-rulestring transitions and also a template that can produce a History ruletable for any rule expressible via Hensel rulestring.
- Brew, notable for that it compresses+generalizes
the original -- it's in this regard a stellar example
Nutshell's strengths. Extensible to any count of states by changing the value of the
states:directive, and demos the use of macros as well (withweave: 1).