Type Alias Rdb_exists

pub type Rdb_exists = Option<unsafe extern "C" fn(name: *const c_char, canCache: *mut Rboolean, arg1: *mut R_ObjectTable) -> Rboolean>;

Aliased Type

pub enum Rdb_exists {
    None,
    Some(unsafe extern "C" fn(*const i8, *mut Rboolean, *mut Struct__R_ObjectTable) -> Rboolean),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const i8, *mut Rboolean, *mut Struct__R_ObjectTable) -> Rboolean)

Some value of type T.