Type Alias writeFunc 

pub type writeFunc = Option<unsafe extern "C" fn(userdata: *mut c_void, str_: *const c_char, len: c_int)>;

Aliased Type

pub enum writeFunc {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *const u8, i32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *const u8, i32))

Some value of type T.