logic vocabulary - Factor Documentation (original) (raw)

logic vocabulary
Factor handbook » Vocabulary index

Documentation
Logic

Words

Parsing words

Word	Syntax
%!	%! comment !%
LOGIC-PRED:	LOGIC-PRED: pred
LOGIC-PREDS:	LOGIC-PREDS: preds... ;
LOGIC-VAR:	LOGIC-VAR: var
LOGIC-VARS:	LOGIC-VARS: vars... ;

Symbol words

!!
(<)
(=)
(=<)
(==)
(>)
(>=)
(\=)
(\==)
;;
\+
__
appendo
failo
lengtho
listo
membero
nlo
nonvaro
trueo
varo
writenlo
writeo

Ordinary words

Word	Stack effect
=:=	( quot: ( env -- n m ) -- goal )
=\=	( quot: ( env -- n m ) -- goal )
callback	( head quot: ( callback-env -- ? ) -- )
callbacks	( defs -- )
clear-pred	( pred -- )
fact	( head -- )
fact*	( head -- )
facts	( defs -- )
invoke	( quot: ( env -- ) -- goal )
invoke*	( quot: ( env -- ? ) -- goal )
is	( quot: ( env -- value ) dist -- goal )
notrace	( -- )
nquery	( goal-def/defs n/f -- bindings-array/success? )
query	( goal-def/defs -- bindings-array/success? )
retract	( head-def -- )
retract-all	( head-def -- )
rule	( head body -- )
rule*	( head body -- )
rules	( defs -- )
trace	( -- )
unify	( cb-env x y -- success? )

Files

resource:extra/logic/logic.factor
resource:extra/logic/logic-docs.factor
resource:extra/logic/logic-tests.factor

Children from resource:extra

Vocabulary	Summary
logic.examples