Rng

Struct Rng 

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pub struct Rng(/* private fields */);
Expand description

A basic xorshift RNG. See Wikipedia for more details.

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impl Rng

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pub fn new(seed: u32) -> Rng

Create an Rng with the given seed.

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pub fn new_from_time() -> Result<Rng, RngError>

Create an Rng seeded from the current system time.

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pub fn new_from_env_var(var_name: &str) -> Result<Rng, RngError>

Create an Rng seeded from an environment variable.

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pub fn u32(&mut self) -> u32

Generate a fresh u32.

extern crate challenge_prompt;
let mut rng = challenge_prompt::Rng::new(100);
assert_eq!(rng.u32(), 27036706);
assert_eq!(rng.u32(), 2466775534);

Auto Trait Implementations§

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impl Freeze for Rng

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impl RefUnwindSafe for Rng

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impl Send for Rng

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impl Sync for Rng

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impl Unpin for Rng

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impl UnwindSafe for Rng

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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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.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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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.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.