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Pack logicmoo_base -- prolog/logicmoo/pfc/system_common.pfc.pl
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% ============================================= % File 'system_common.pfc' % Purpose: Agent Reactivity for SWI-Prolog % Maintainer: Douglas Miles % Contact: $Author: dmiles $@users.sourceforge.net ; % Version: 'interface' 1.0.0 % Revision: $Revision: 1.9 $ % Revised At: $Date: 2002/06/27 14:13:20 $ % ============================================= % % PFC is a language extension for prolog.. there is so much that can be done in this language extension to Prolog % % % props(Obj,[height(ObjHt)]) == t(height,Obj,ObjHt) == rdf(Obj,height,ObjHt) == t(height(Obj,ObjHt)). % pain(Obj,[height(ObjHt)]) == prop_set(height,Obj,ObjHt,...) == ain(height(Obj,ObjHt)) % [pdel/pclr](Obj,[height(ObjHt)]) == [del/clr](height,Obj,ObjHt) == [del/clr]svo(Obj,height,ObjHt) == [del/clr](height(Obj,ObjHt)) % keraseall(AnyTerm). % % ANTECEEDANT CONSEQUENT % % P = test nesc true assert(P),retract(~P) , enable(P). % ~ P = test nesc false assert(~P),retract(P), disable(P) % % ~ ~(P) = test possible (via not impossible) retract( ~(P)), enable(P). % \+ ~(P) = test impossiblity is unknown retract( ~(P)) % ~ \+(P) = same as P same as P % \+(P) = test naf(P) retract(P) % % Dec 13, 2035 % Douglas Miles

Re-exported predicates

The following predicates are re-exported from other modules

 member(?Elem, ?List)
True if Elem is a member of List. The SWI-Prolog definition differs from the classical one. Our definition avoids unpacking each list element twice and provides determinism on the last element. E.g. this is deterministic:
    member(X, [One]).
author
- Gertjan van Noord

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 arg(Arg1, Arg2, Arg3)
 integer(Arg1)
 number(Arg1)
 string(Arg1)
 var(Arg1)
 equals(Arg1, Arg2)