objc:description

(objc:description pointer)

The object's description, as a Lisp string. Part of the macOS-only objc package -- the interpreter (java -jar, or the rontolisp native binary), a compiled .class / .jar and a --native executable for macOS on Apple silicon, never a .wasm; on a machine without the runtime it signals an error. See the macOS GUI guide.

CL-USER> (objc:description (objc:invoke "NSNumber" "numberWithInt:" 42))
"42"