[−][src]Struct rand::rngs::StdRng
The standard RNG. The PRNG algorithm in StdRng is chosen to be efficient
on the current platform, to be statistically strong and unpredictable
(meaning a cryptographically secure PRNG).
The current algorithm used on all platforms is HC-128.
Reproducibility of output from this generator is however not required, thus
future library versions may use a different internal generator with
different output. Further, this generator may not be portable and can
produce different output depending on the architecture. If you require
reproducible output, use a named RNG, for example ChaChaRng.
Trait Implementations
impl Clone for StdRng[src]
impl Clone for StdRngfn clone(&self) -> StdRng[src]
fn clone(&self) -> StdRngReturns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0[src]
fn clone_from(&mut self, source: &Self)Performs copy-assignment from source. Read more
impl Debug for StdRng[src]
impl Debug for StdRngfn fmt(&self, f: &mut Formatter) -> Result[src]
fn fmt(&self, f: &mut Formatter) -> ResultFormats the value using the given formatter. Read more
impl CryptoRng for StdRng[src]
impl CryptoRng for StdRngimpl RngCore for StdRng[src]
impl RngCore for StdRngfn next_u32(&mut self) -> u32[src]
fn next_u32(&mut self) -> u32Return the next random u32. Read more
fn next_u64(&mut self) -> u64[src]
fn next_u64(&mut self) -> u64Return the next random u64. Read more
fn fill_bytes(&mut self, dest: &mut [u8])[src]
fn fill_bytes(&mut self, dest: &mut [u8])Fill dest with random data. Read more
fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>[src]
fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>Fill dest entirely with random data. Read more
impl SeedableRng for StdRng[src]
impl SeedableRng for StdRngtype Seed = <Hc128Rng as SeedableRng>::Seed
Seed type, which is restricted to types mutably-dereferencable as u8 arrays (we recommend [u8; N] for some N). Read more
fn from_seed(seed: Self::Seed) -> Self[src]
fn from_seed(seed: Self::Seed) -> SelfCreate a new PRNG using the given seed. Read more
fn from_rng<R: RngCore>(rng: R) -> Result<Self, Error>[src]
fn from_rng<R: RngCore>(rng: R) -> Result<Self, Error>Create a new PRNG seeded from another Rng. Read more
fn seed_from_u64(state: u64) -> Self[src]
fn seed_from_u64(state: u64) -> SelfCreate a new PRNG using a u64 seed. Read more
Auto Trait Implementations
Blanket Implementations
impl<R> Rng for R where
R: RngCore + ?Sized, [src]
impl<R> Rng for R where
R: RngCore + ?Sized, fn gen<T>(&mut self) -> T where
Standard: Distribution<T>, [src]
fn gen<T>(&mut self) -> T where
Standard: Distribution<T>, Return a random value supporting the [Standard] distribution. Read more
fn gen_range<T: SampleUniform, B1, B2>(&mut self, low: B1, high: B2) -> T where
B1: SampleBorrow<T> + Sized,
B2: SampleBorrow<T> + Sized, [src]
fn gen_range<T: SampleUniform, B1, B2>(&mut self, low: B1, high: B2) -> T where
B1: SampleBorrow<T> + Sized,
B2: SampleBorrow<T> + Sized, Generate a random value in the range [low, high), i.e. inclusive of low and exclusive of high. Read more
fn sample<T, D: Distribution<T>>(&mut self, distr: D) -> T[src]
fn sample<T, D: Distribution<T>>(&mut self, distr: D) -> TSample a new value, using the given distribution. Read more
ⓘImportant traits for DistIter<'a, D, R, T>fn sample_iter<'a, T, D: Distribution<T>>(
&'a mut self,
distr: &'a D
) -> DistIter<'a, D, Self, T> where
Self: Sized, [src]
fn sample_iter<'a, T, D: Distribution<T>>(
&'a mut self,
distr: &'a D
) -> DistIter<'a, D, Self, T> where
Self: Sized, Create an iterator that generates values using the given distribution. Read more
fn fill<T: AsByteSliceMut + ?Sized>(&mut self, dest: &mut T)[src]
fn fill<T: AsByteSliceMut + ?Sized>(&mut self, dest: &mut T)Fill dest entirely with random bytes (uniform value distribution), where dest is any type supporting [AsByteSliceMut], namely slices and arrays over primitive integer types (i8, i16, u32, etc.). Read more
fn try_fill<T: AsByteSliceMut + ?Sized>(
&mut self,
dest: &mut T
) -> Result<(), Error>[src]
fn try_fill<T: AsByteSliceMut + ?Sized>(
&mut self,
dest: &mut T
) -> Result<(), Error>Fill dest entirely with random bytes (uniform value distribution), where dest is any type supporting [AsByteSliceMut], namely slices and arrays over primitive integer types (i8, i16, u32, etc.). Read more
fn gen_bool(&mut self, p: f64) -> bool[src]
fn gen_bool(&mut self, p: f64) -> boolReturn a bool with a probability p of being true. Read more
fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool[src]
fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> boolReturn a bool with a probability of numerator/denominator of being true. I.e. gen_ratio(2, 3) has chance of 2 in 3, or about 67%, of returning true. If numerator == denominator, then the returned value is guaranteed to be true. If numerator == 0, then the returned value is guaranteed to be false. Read more
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T>[src]
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T>: use SliceRandom::choose instead
Return a random element from values. Read more
fn choose_mut<'a, T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>[src]
fn choose_mut<'a, T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>: use SliceRandom::choose_mut instead
Return a mutable pointer to a random element from values. Read more
fn shuffle<T>(&mut self, values: &mut [T])[src]
fn shuffle<T>(&mut self, values: &mut [T]): use SliceRandom::shuffle instead
Shuffle a mutable slice in place. Read more
impl<R> FromEntropy for R where
R: SeedableRng, [src]
impl<R> FromEntropy for R where
R: SeedableRng, fn from_entropy() -> R[src]
fn from_entropy() -> RCreates a new instance, automatically seeded with fresh entropy. Read more
impl<T, U> Into for T where
U: From<T>, [src]
impl<T, U> Into for T where
U: From<T>, impl<T> ToOwned for T where
T: Clone, [src]
impl<T> ToOwned for T where
T: Clone, type Owned = T
fn to_owned(&self) -> T[src]
fn to_owned(&self) -> TCreates owned data from borrowed data, usually by cloning. Read more
fn clone_into(&self, target: &mut T)[src]
fn clone_into(&self, target: &mut T)🔬 This is a nightly-only experimental API. (toowned_clone_into)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<T> From for T[src]
impl<T> From for Timpl<T, U> TryFrom for T where
T: From<U>, [src]
impl<T, U> TryFrom for T where
T: From<U>, type Error = !
try_from)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>try_from)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized, [src]
impl<T> Borrow for T where
T: ?Sized, impl<T> BorrowMut for T where
T: ?Sized, [src]
impl<T> BorrowMut for T where
T: ?Sized, fn borrow_mut(&mut self) -> &mut T[src]
fn borrow_mut(&mut self) -> &mut TMutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
impl<T, U> TryInto for T where
U: TryFrom<T>, type Error = <U as TryFrom<T>>::Error
try_from)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>try_from)Performs the conversion.
impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Any for T where
T: 'static + ?Sized, fn get_type_id(&self) -> TypeId[src]
fn get_type_id(&self) -> TypeId🔬 This is a nightly-only experimental API. (get_type_id)
this method will likely be replaced by an associated static
Gets the TypeId of self. Read more
impl<T> FromCast for T[src]
impl<T> FromCast for Timpl<T, U> Cast for T where
U: FromCast<T>, [src]
impl<T, U> Cast for T where
U: FromCast<T>, impl<T, U> IntoBits for T where
U: FromBits<T>, [src]
impl<T, U> IntoBits for T where
U: FromBits<T>, impl<T> FromBits for T[src]
impl<T> FromBits for T