我面临的“问题”是,如果我使用SWI-Prolog模块系统,定义模块并在其他模块中使用它们,如果一个导入的模块改变了SWI-Prolog,则在加载导入模块时SWI-Prolog不会考虑这一点。例如:
% file topmod.pl
:- module(topmod, [thetop/0]).
:- use_module(bottommod).
thetop :-
thebottom(S),
format('This is the top~nAnd this is ~w~n', [S]).
% file bottommod.pl
:- module(bottommod, [thebottom/1]).
thebottom('the bottom').
如果我现在加载它们:
?- [thetop].
% bottommod compiled into bottommod 0.00 sec, 2 clauses
% topmod compiled into topmod 0.00 sec, 6 clauses
true.
?- thetop.
This is the top
And this is the bottom
true.
如果我现在更改文件:
% file bottommod.pl changes
- thebottom('the bottom').
+ thebottom('the foobar').
?- [thetop].
% topmod compiled into topmod 0.00 sec, 1 clauses
true.
?- thetop.
This is the top
And this is the bottom
true.
?- module(bottommod).
true.
?- listing.
thebottom('the bottom').
true.
如何强制Prolog查询所有已导入的模块以及它们所导入的模块,除了使用consult
之外?