Type Alias R_CFinalizer_t 

pub type R_CFinalizer_t = Option<unsafe extern "C-unwind" fn(s: SEXP)>;

C finalizer callback signature used by external pointers.

Aliased Type

pub enum R_CFinalizer_t {
    None,
    Some(unsafe extern "C-unwind" fn(SEXP)),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(SEXP))

Some value of type T.