Type Alias paho_mqtt_sys::Persistence_keys

pub type Persistence_keys = Option<unsafe extern "C" fn(handle: *mut c_void, keys: *mut *mut *mut c_char, nkeys: *mut c_int) -> c_int>;

Aliased Type

enum Persistence_keys {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void, _: *mut *mut *mut i8, _: *mut i32) -> i32),
}

Variants

None

No value.

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

Some value of type T.