Struct rand::rngs::adapter::ReadRng [−][src]
An RNG that reads random bytes straight from any type supporting
std::io::Read
, for example files.
This will work best with an infinite reader, but that is not required.
This can be used with /dev/urandom
on Unix but it is recommended to use
OsRng
instead.
Panics
ReadRng
uses std::io::Read::read_exact
, which retries on interrupts.
All other errors from the underlying reader, including when it does not
have enough data, will only be reported through try_fill_bytes
.
The other RngCore
methods will panic in case of an error.
Example
use rand::Rng; use rand::rngs::adapter::ReadRng; let data = vec![1, 2, 3, 4, 5, 6, 7, 8]; let mut rng = ReadRng::new(&data[..]); println!("{:x}", rng.gen::<u32>());
Implementations
impl<R: Read> ReadRng<R>
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Trait Implementations
Auto Trait Implementations
impl<R> RefUnwindSafe for ReadRng<R> where
R: RefUnwindSafe,
R: RefUnwindSafe,
impl<R> Send for ReadRng<R> where
R: Send,
R: Send,
impl<R> Sync for ReadRng<R> where
R: Sync,
R: Sync,
impl<R> Unpin for ReadRng<R> where
R: Unpin,
R: Unpin,
impl<R> UnwindSafe for ReadRng<R> where
R: UnwindSafe,
R: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
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,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<R> Rng for R where
R: RngCore + ?Sized,
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R: RngCore + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
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V: MultiLane<T>,