Type Alias RConsFunctionKey 

pub type RConsFunctionKey = Option<unsafe extern "C" fn(core: *mut c_void, fkey: c_int)>;

Aliased Type

pub enum RConsFunctionKey {
    None,
    Some(unsafe extern "C" fn(*mut c_void, i32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, i32))

Some value of type T.