pljulia

Embedded Julia for SWI Prolog

This module allows Prolog code to use an embedded instance of Julia, a language for numerical and technical computing.

INSTALLATION

Make sure you have installed Julia, and that the julia executable is on your PATH.

Then do

?- pack_install(pljulia).

USAGE

?- use_module(library(julia)).
?- ?cumsum(rand(4,4)).
?- X <? 6*7.
?- "hello world"[1:2:end] ?> X.
?- X <? rand(3,4,5), ?X.
?- X <? #(1,"a",2.2,[1,2,3]).
?- maplist(jl_call("println"), [1,3.14,#("a",2.2,float64([3],[4,5,6]))], _).
?- ?pl_call(:user,:succ,4).

See examples/example.pl for more, including plotting.

TODO

Add jl_map/2, like jl_call/N but mapped over lists.

Generate more informative Prolog exceptions from Julia exceptions

Handle more Julia types directly: more base types? Arrays of more types? BitArray?

Handle more node types in Julia syntax trees.

Consider having jl_array_t structures floating around as Prolog BLOB atoms, assuming they can be protected from Julia's garbage collector. Should be more efficient than converting to/from Prolog lists when dealing with numeric arrays.

Handle more Julia syntax:

; to separate positional args from keyword args
{} for parametric types