Type Alias MDB_msg_func 

pub type MDB_msg_func = Option<unsafe extern "C" fn(msg: *const c_char, ctx: *mut c_void) -> c_int>;

Aliased Type

pub enum MDB_msg_func {
    None,
    Some(unsafe extern "C" fn(*const i8, *mut c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const i8, *mut c_void) -> i32)

Some value of type T.