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yap-6.3/packages/chr/Tests/passive_check.chr
2015-10-13 08:17:51 +01:00

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:- module(passive_check,[passive_check/0]).
:- use_module(library(chr)).
:- chr_constraint a/1, b/1.
:- chr_option(debug,off).
:- chr_option(optimize,full).
a(X) # ID, b(X) <=> true pragma passive(ID).
passive_check :-
a(_).