Struct rand::rngs::mock::StepRng[−][src]

pub struct StepRng { /* fields omitted */ }

Expand description

A simple implementation of RngCore for testing purposes.

This generates an arithmetic sequence (i.e. adds a constant each step) over a u64 number, using wrapping arithmetic. If the increment is 0 the generator yields a constant.

use rand::Rng;
use rand::rngs::mock::StepRng;

let mut my_rng = StepRng::new(2, 1);
let sample: [u64; 3] = my_rng.gen();
assert_eq!(sample, [2, 3, 4]);

Implementations

impl StepRng[src]

pub fn new(initial: u64, increment: u64) -> Self[src]

Create a StepRng, yielding an arithmetic sequence starting with initial and incremented by increment each time.

Trait Implementations

impl Clone for StepRng[src]

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

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

Formats the value using the given formatter. Read more

impl<'de> Deserialize<'de> for StepRng[src]

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>,

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Deserialize this value from the given Serde deserializer. Read more

impl PartialEq<StepRng> for StepRng[src]

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

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

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

This method tests for !=.

impl RngCore for StepRng[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 Serialize for StepRng[src]

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer,

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Serialize this value into the given Serde serializer. Read more

impl Eq for StepRng[src]

impl StructuralEq for StepRng[src]

impl StructuralPartialEq for StepRng[src]

Auto Trait Implementations

impl RefUnwindSafe for StepRng

impl Send for StepRng

impl Sync for StepRng

impl Unpin for StepRng

impl UnwindSafe for StepRng

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

impl<T> DeserializeOwned for T where
    T: for<'de> Deserialize<'de>,

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