fn next_u32(&mut self) -> u32

fn next_u64(&mut self) -> u64

fn fill_bytes(&mut self, bytes: &mut [u8])

fn gen<T: Rand>(&mut self) -> T

fn gen_iter<T: Rand>(&'a mut self) -> Generator<'a, T, Self>

fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T

fn gen_weighted_bool(&mut self, n: uint) -> bool

fn gen_ascii_chars(&'a mut self) -> AsciiGenerator<'a, Self>

fn choose<T>(&mut self, values: &'a [T]) -> Option<&'a T>

fn choose_option<T>(&mut self, values: &'a [T]) -> Option<&'a T>

fn shuffle<T>(&mut self, values: &mut [T])