A.19 Predicats de tipus predefinits
Predicates return #t (true) if their argument is of the named type
and #f (false) if it isn’t.
| A.19.1 R5RS primary predicates | ||
| A.19.2 R5RS secondary predicates | ||
| A.19.3 Guile predicates | ||
| A.19.4 LilyPond scheme predicates | ||
| A.19.5 LilyPond exported predicates |