Struct rand::rngs::StdRng[−][src]

pub struct StdRng(_);

This is supported on crate feature std_rng only.

Expand description

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 is the ChaCha block cipher with 12 rounds. Please see this relevant rand issue for the discussion. This may change as new evidence of cipher security and performance becomes available.

The algorithm is deterministic but should not be considered reproducible due to dependence on configuration and possible replacement in future library versions. For a secure reproducible generator, we recommend use of the rand_chacha crate directly.

Trait Implementations

impl Clone for StdRng[src]

fn clone(&self) -> StdRng[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0 [src]

Performs copy-assignment from source. Read more

impl Debug for StdRng[src]

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

Formats the value using the given formatter. Read more

impl PartialEq<StdRng> for StdRng[src]

fn eq(&self, other: &StdRng) -> bool[src]

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &StdRng) -> bool[src]

This method tests for !=.

impl RngCore for StdRng[src]

fn next_u32(&mut self) -> u32[src]

Return the next random u32. Read more

fn next_u64(&mut self) -> u64[src]

Return the next random u64. Read more

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

Fill dest with random data. Read more

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

Fill dest entirely with random data. Read more

impl SeedableRng for StdRng[src]

type Seed = <Rng 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]

Create a new PRNG using the given seed. Read more

fn from_rng<R: RngCore>(rng: R) -> Result<Self, Error>[src]

Create a new PRNG seeded from another Rng. Read more

fn seed_from_u64(state: u64) -> Self[src]

Create a new PRNG using a u64 seed. Read more

fn from_entropy() -> Self[src]

Creates a new instance of the RNG seeded via getrandom. Read more

impl CryptoRng for StdRng[src]

impl Eq for StdRng[src]

impl StructuralEq for StdRng[src]

impl StructuralPartialEq for StdRng[src]

Auto Trait Implementations

impl RefUnwindSafe for StdRng

impl Send for StdRng

impl Sync for StdRng

impl Unpin for StdRng

impl UnwindSafe for StdRng

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized,

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pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T, U> Cast<U> for T where
    U: FromCast<T>,

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pub fn cast(self) -> U[src]

Numeric cast from self to T.

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T> FromBits<T> for T[src]

pub fn from_bits(t: T) -> T[src]

Safe lossless bitwise transmute from T to Self.

impl<T> FromCast<T> for T[src]

pub fn from_cast(t: T) -> T[src]

Numeric cast from T to Self.

impl<T, U> Into<U> for T where
    U: From<T>,

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pub fn into(self) -> U[src]

Performs the conversion.

impl<T, U> IntoBits<U> for T where
    U: FromBits<T>,

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pub fn into_bits(self) -> U[src]

Safe lossless bitwise transmute from self to T.

impl<T> ToOwned for T where
    T: Clone,

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type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 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, U> TryFrom<U> for T where
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>,

pub fn vzip(self) -> V