Type Alias FnSerialMessageCallback

pub type FnSerialMessageCallback = Option<unsafe extern "C" fn(data: *const c_char)>;

Aliased Type

enum FnSerialMessageCallback {
    None,
    Some(unsafe extern "C" fn(_: *const u8)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *const u8))

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: 4 bytes

Size for each variant:

• None: 0 bytes
• Some: 4 bytes