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

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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes

Size for each variant:

• None: 0 bytes
• Some: 8 bytes