Type Alias MDBX_cmp_func 

pub type MDBX_cmp_func = Option<unsafe extern "C" fn(a: *const MDBX_val, b: *const MDBX_val) -> c_int>;

Aliased Type

pub enum MDBX_cmp_func {
    None,
    Some(unsafe extern "C" fn(*const iovec, *const iovec) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const iovec, *const iovec) -> i32)

Some value of type T.