Struct rand::reseeding::ReseedingRng
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pub struct ReseedingRng<R, Rsdr> { pub reseeder: Rsdr, // some fields omitted }
A wrapper around any RNG which reseeds the underlying RNG after it has generated a certain number of random bytes.
Fields
reseeder: Rsdr
Controls the behaviour when reseeding the RNG.
Methods
impl<R, Rsdr> ReseedingRng<R, Rsdr> where
R: Rng,
Rsdr: Reseeder<R>,
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R: Rng,
Rsdr: Reseeder<R>,
pub fn new(
rng: R,
generation_threshold: u64,
reseeder: Rsdr
) -> ReseedingRng<R, Rsdr>
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rng: R,
generation_threshold: u64,
reseeder: Rsdr
) -> ReseedingRng<R, Rsdr>
Create a new ReseedingRng
with the given parameters.
Arguments
rng
: the random number generator to use.generation_threshold
: the number of bytes of entropy at which to reseed the RNG.reseeder
: the reseeding object to use.
pub fn reseed_if_necessary(&mut self)
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Reseed the internal RNG if the number of bytes that have been generated exceed the threshold.
Trait Implementations
impl<R, Rsdr> Rng for ReseedingRng<R, Rsdr> where
R: Rng,
Rsdr: Reseeder<R>,
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R: Rng,
Rsdr: Reseeder<R>,
fn next_u32(&mut self) -> u32
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Return the next random u32. Read more
fn next_u64(&mut self) -> u64
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Return the next random u64. Read more
fn fill_bytes(&mut self, dest: &mut [u8])
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Fill dest
with random data. Read more
fn next_f32(&mut self) -> f32
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Return the next random f32 selected from the half-open interval [0, 1)
. Read more
fn next_f64(&mut self) -> f64
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Return the next random f64 selected from the half-open interval [0, 1)
. Read more
fn gen<T>(&mut self) -> T where
T: Rand,
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T: Rand,
Return a random value of a Rand
type. Read more
ⓘImportant traits for Generator<'a, T, R>fn gen_iter<T>(&'a mut self) -> Generator<'a, T, Self> where
T: Rand,
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T: Rand,
Return an iterator that will yield an infinite number of randomly generated items. Read more
fn gen_range<T>(&mut self, low: T, high: T) -> T where
T: SampleRange + PartialOrd<T>,
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T: SampleRange + PartialOrd<T>,
Generate a random value in the range [low
, high
). Read more
fn gen_weighted_bool(&mut self, n: u32) -> bool
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Return a bool with a 1 in n chance of true Read more
ⓘImportant traits for AsciiGenerator<'a, R>fn gen_ascii_chars(&'a mut self) -> AsciiGenerator<'a, Self>
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Return an iterator of random characters from the set A-Z,a-z,0-9. Read more
fn choose<T>(&mut self, values: &'a [T]) -> Option<&'a T>
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Return a random element from values
. Read more
fn choose_mut<T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>
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Return a mutable pointer to a random element from values
. Read more
fn shuffle<T>(&mut self, values: &mut [T])
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Shuffle a mutable slice in place. Read more
impl<R, Rsdr> Debug for ReseedingRng<R, Rsdr> where
R: Debug,
Rsdr: Debug,
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R: Debug,
Rsdr: Debug,
fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>
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Formats the value using the given formatter. Read more
impl<S, R, Rsdr> SeedableRng<(Rsdr, S)> for ReseedingRng<R, Rsdr> where
R: SeedableRng<S>,
Rsdr: Reseeder<R> + Default,
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R: SeedableRng<S>,
Rsdr: Reseeder<R> + Default,