do-instances [Macro]

Purpose

The do-instances macro executes a body of Lisp code once for each instance in each knowledge base of a Loom network.

do-instances variable &body body

The variable argument is a list containing a single iteration variable.

The body argument is the Lisp code to be executed for each binding of the iteration variable.

This function returns nil.

This function iterates over all instances, including concepts and relations.

(do-instances (x) 
    (foo x) 
    (unless (meta-concept-p x) (bar x)))