Enum SamplerRng 

pub enum SamplerRng {
    Thread(ThreadRng),
    Seeded(Rc<RefCell<StdRng>>),
}

Defines the source of randomness used by the samplers in this module.

A ThreadRng can not be seeded explicitly, as it is a handle to a thread-local generator that is seeded and periodically reseeded by the OS. Hence, seeded samplers use a StdRng instead, which uses the same algorithm (ChaCha with 12 rounds) as ThreadRng, but it’s never reseeded.

Cloning a SamplerRng returns a handle to the same generator for both variants, i.e. a clone and its original draw from one shared stream of randomness.

Variants:

• Thread: a handle to the ThreadRng of the current thread
• Seeded: a shared StdRng that was explicitly seeded

Variants

Thread(ThreadRng)

Seeded(Rc<RefCell<StdRng>>)

Trait Implementations

impl Clone for SamplerRng

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SamplerRng

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SamplerRng

fn default() -> Self

Returns a SamplerRng containing the ThreadRng of the current thread.

impl TryCryptoRng for SamplerRng

impl TryRng for SamplerRng

type Error = !

The type returned in the event of a RNG error.

fn try_next_u32(&mut self) -> Result<u32, Self::Error>

Return the next random u32.

fn try_next_u64(&mut self) -> Result<u64, Self::Error>

Return the next random u64.

fn try_fill_bytes(&mut self, dst: &mut [u8]) -> Result<(), Self::Error>

Fill dst entirely with random data.