What is it?
Brachylog is a declarative logic programming language much like Prolog. Brachylog is designed to be much terser than Prolog, while retaining some readability.
Currently in development.
Brachylog uses SWI-Prolog as Prolog engine.
How do I use this?
Check out Brachylog's Wiki if you want to learn how to write programs in this language.
You may want to watch this short video introduction to Brachylog.
Try it online!
You can try out Brachylog on Try it online!, thanks to @DennisMitchell.
Brachylog language bar
You can find here the Brachylog language bar which gives you access to all symbols used in Brachylog on any webpage (by clicking on the symbols or by inputing shortcuts), thanks to @abrudz.
Brachylog's interpreter is entirely written in Prolog. Therefore, installing SWI-Prolog (version 7 and up) is mandatory to use Brachylog (We do not guarantee that Brachylog's interpreter will be compatible with any other Prolog implementation).
To run Brachylog's interpreter, start SWI-Prolog's interpreter inside the
src directory available in this repository, and consult the file
consult(brachylog).). Alternatively, you can run the interpreter with:
$ swipl src/brachylog.pl
You can then run Brachylog programs using different predicates:
run_from_file(FileName, Input, Output):
FileNameis an atom (i.e. between single quotes
') representing the file containing your Brachylog code. For example:
run_from_atom(Code, Input, Output):
Codeis an atom (i.e. between single quotes
') containing your Brachylog code. For example:
run_from_atom('∧"Hello, World!"w',_,_). Note that you will have to escape certain characters in
run(Input, Output): This will run a Brachylog program that has already been transpiled to Prolog using either of the two previous predicates. More precisely, this will query
brachylog_main/2in the file
The first two predicates will transpile your Brachylog program into Prolog, subsequently generating a file called
compiled_brachylog.pl in the same directory that contains
brachylog.pl. The three run predicates will then consult it and query
Note that the first two run predicates also exist with either no
Output argument, or with no
Output argument, if necessary. For example,
run_from_file('code.brachylog') is equivalent to
run_from_file('code.brachylog', _, _).
Julien Cumin - @JCumin
Markus Triska - @triska