[−][src]Struct rand::StdRng
The standard RNG. This is designed to be efficient on the current platform.
Methods
impl StdRng
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pub fn new() -> Result<StdRng>
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Create a randomly seeded instance of StdRng
.
This is a very expensive operation as it has to read
randomness from the operating system and use this in an
expensive seeding operation. If one is only generating a small
number of random numbers, or doesn't need the utmost speed for
generating each number, thread_rng
and/or random
may be more
appropriate.
Reading the randomness from the OS may fail, and any error is
propagated via the io::Result
return value.
Trait Implementations
impl Rng for StdRng
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fn next_u32(&mut self) -> u32
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fn next_u64(&mut self) -> u64
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fn next_f32(&mut self) -> f32
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fn next_f64(&mut self) -> f64
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fn fill_bytes(&mut self, dest: &mut [u8])
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fn gen<T: Rand>(&mut self) -> T where
Self: Sized,
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Self: Sized,
ⓘImportant traits for Generator<'a, T, R>fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where
Self: Sized,
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ⓘImportant traits for Generator<'a, T, R>
Self: Sized,
fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where
Self: Sized,
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Self: Sized,
fn gen_weighted_bool(&mut self, n: u32) -> bool where
Self: Sized,
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Self: Sized,
ⓘImportant traits for AsciiGenerator<'a, R>fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where
Self: Sized,
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ⓘImportant traits for AsciiGenerator<'a, R>
Self: Sized,
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where
Self: Sized,
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Self: Sized,
fn choose_mut<'a, T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T> where
Self: Sized,
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Self: Sized,
fn shuffle<T>(&mut self, values: &mut [T]) where
Self: Sized,
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Self: Sized,
impl<'a> SeedableRng<&'a [usize]> for StdRng
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impl Clone for StdRng
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impl Copy for StdRng
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impl Debug for StdRng
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Auto Trait Implementations
impl Send for StdRng
impl Sync for StdRng
impl Unpin for StdRng
impl UnwindSafe for StdRng
impl RefUnwindSafe for StdRng
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,