SWI-Prolog Pack that adds a new Global Variable syntax to Prolog

Installation

Using SWI-Prolog 7.1 or later:

?- pack_install('https://github.com/logicmoo/gvar_syntax.git').

Source code available and pull requests accepted at http://github.com/logicmoo/gvar_syntax

?- use_module(library(gvar_syntax)).
true.

?- $foo.unify() = 1.
true.

?- $foo.unify() = 2.
false.

?- writeln($foo.get()).
1
true.

?- writeln($foo.get()).
1
true.

?- $foo.clear().
true.

?- writeln($foo.get()).
_8350

?- writeln($bar.set(2).get()).
2

?- $foo.set() = xxxxxxxx.
true.

?- $baz.set(point{ x: ($foo.get()) , y:vy, z:vz}).
true.

?- writeln($baz.get().x).
xxxxxxxx
true.

?- writeln($baz.x). % will error as you havent accessed the get()

Another Pack called dictoo adds better OO API on these values

Some TODOs

Document this pack!

Write tests

Untangle the 'pack' install deps (Moving predicates over here from logicmoo_base)

Not obligated to maintain a git fork just to contribute

Dislike having tons of forks that are several commits behind the main git repo?

Be old school - Please ask to be added to logicmoo and Contribute directly !

Still, we wont stop you from doing it the Fork+PullRequest method

BSD 2-Clause License

Copyright (c) 2017, logicmoo and Douglas Miles <logicmoo@gmail.com> All rights reserved.