pub type TCOD_bsp_callback_t = Option<unsafe extern "C" fn(node: *mut TCOD_bsp_t, userData: *mut c_void) -> bool_>;
pub enum TCOD_bsp_callback_t { None, Some(unsafe extern "C" fn(*mut TCOD_bsp_t, *mut c_void) -> u8), }
No value.
Some value of type T.
T