Struct rand::rngs::adapter::ReadRng

pub struct ReadRng<R> { /* private fields */ }

👎 Deprecated since 0.8.4:

removal due to lack of usage

This is supported on crate feature std only.

An RNG that reads random bytes straight from any type supporting std::io::Read, for example files.

This will work best with an infinite reader, but that is not required.

This can be used with /dev/urandom on Unix but it is recommended to use OsRng instead.

Panics

ReadRng uses std::io::Read::read_exact, which retries on interrupts. All other errors from the underlying reader, including when it does not have enough data, will only be reported through try_fill_bytes. The other RngCore methods will panic in case of an error.

Implementations

impl<R: Read> ReadRng<R>

pub fn new(r: R) -> ReadRng<R>

Create a new ReadRng from a Read.

Trait Implementations

impl<R: Debug> Debug for ReadRng<R>

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

Formats the value using the given formatter.

impl<R: Read> RngCore for ReadRng<R>

fn next_u32(&mut self) -> u32

Return the next random u32.

fn next_u64(&mut self) -> u64

Return the next random u64.

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

Fill dest with random data.

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

Fill dest entirely with random data.