chickadee » typeclass » with-instance

(with-instance (<INSTANCE-FORM> ...) . BODY)syntax

An expression such that all fields of the given class(es) are visible in the scope of BODY.

INSTANCE-FORM is of the following form:

 INSTANCE-FORM = (CLASS-NAME INSTANCE-EXPR)
                | (CLASS-NAME INSTANCE-EXPR PREFIX-SYMBOL)