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Implement TrustedLen and FusedIterator for DistIter #620

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merged 1 commit into from Oct 3, 2018
Merged

Implement TrustedLen and FusedIterator for DistIter #620

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10 changes: 10 additions & 0 deletions src/distributions/mod.rs
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Expand Up @@ -182,6 +182,8 @@
//! [`Weibull`]: struct.Weibull.html
//! [`WeightedIndex`]: struct.WeightedIndex.html

#[cfg(any(rust_1_26, features="nightly"))]
use core::iter;
use Rng;

pub use self::other::Alphanumeric;
Expand Down Expand Up @@ -314,6 +316,14 @@ impl<'a, D, R, T> Iterator for DistIter<'a, D, R, T>
}
}

#[cfg(rust_1_26)]
impl<'a, D, R, T> iter::FusedIterator for DistIter<'a, D, R, T>
where D: Distribution<T>, R: Rng + 'a {}

#[cfg(features = "nightly")]
impl<'a, D, R, T> iter::TrustedLen for DistIter<'a, D, R, T>
where D: Distribution<T>, R: Rng + 'a {}


/// A generic random value distribution, implemented for many primitive types.
/// Usually generates values with a numerically uniform distribution, and with a
Expand Down