Type Alias nng_logger 

pub type nng_logger = Option<unsafe extern "C" fn(level: nng_log_level, facility: nng_log_facility, msgid: *const c_char, msg: *const c_char)>;

Aliased Type

pub enum nng_logger {
    None,
    Some(unsafe extern "C" fn(nng_log_level, nng_log_facility, *const i8, *const i8)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(nng_log_level, nng_log_facility, *const i8, *const i8))

Some value of type T.