traverseproc typedef Null safety

Int32 traverseproc (
  1. Pointer<PyObject>,
  2. Pointer<NativeFunction<visitproc>>,
  3. Pointer<Void>
)

Implementation

typedef traverseproc = ffi.Int32 Function(
  ffi.Pointer<PyObject>,
  ffi.Pointer<ffi.NativeFunction<visitproc>>,
  ffi.Pointer<ffi.Void>,
);