Type Alias Rdb_exists

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

Aliased Type§

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

Variants§

§1.0.0

None

No value.

§1.0.0

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

Some value of type T.