pub type MDB_rel_func = Option<unsafe extern "C" fn(item: *mut MDB_val, oldptr: *mut c_void, newptr: *mut c_void, relctx: *mut c_void)>;Aliased Type§
pub enum MDB_rel_func {
None,
Some(unsafe extern "C" fn(*mut MDB_val, *mut c_void, *mut c_void, *mut c_void)),
}