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OS/2 Shareware BBS: 10 Tools
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LIFE-1.02
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T3205.LF
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1996-06-04
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287b
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21 lines
%
% WILD-LIFE TESTING
%
% How predicate is input?
%
% assert and asserta
%
dynamic(t)?
t(a).
test1(X) :- t(X),!.
test2(X) :- t(X).
%
% retract_all(X): the whole definition of the predicate X is discarded.
%
non_strict(retract_all)?
retract_all(X):- retract(X),fail.
retract_all(X).