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fix needless check in dif/2 implementation

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This commit is contained in:
Mark Thom
2019-02-14 16:12:24 -04:00
parent 8958a563de
commit 6b879467f3
1 changed files with 3 additions and 5 deletions
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4
src/prolog/lib/dif.pl
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@@ -38,10 +38,8 @@ verify_attributes(Var, Value, Goals) :-
dif(X, Y) :- X \== Y, dif(X, Y) :- X \== Y,
( X \= Y -> true ( X \= Y -> true
; term_variables(X, XVars), term_variables(Y, YVars), ; term_variables(X, XVars), term_variables(Y, YVars),
( XVars == [], YVars == [] -> false dif_set_variables(XVars, X, Y),
; dif_set_variables(XVars, X, Y),
dif_set_variables(YVars, X, Y) dif_set_variables(YVars, X, Y)
)
). ).
gather_dif_goals(Attrs, _) :- gather_dif_goals(Attrs, _) :-