6.12.3 Predicates for condition objects

Function: simple-condition? obj

Return #t if obj is a simple condition object; otherwise return #f.

Function: list-of-simple-conditions? obj

Return #t if obj is a proper list of simple condition objects; otherwise return #f.

Function: list-of-conditions? obj

Return #t if obj is a proper list of simple or compound condition objects; otherwise return #f.