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Add Default for ThreadRng #657

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Merged
merged 2 commits into from
Dec 17, 2018
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Add Default for ThreadRng #657

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Add Default for ThreadRng
burdges Dec 4, 2018
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burdges Dec 5, 2018
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15 changes: 11 additions & 4 deletions src/rngs/thread.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -87,10 +87,11 @@ thread_local!(
}
);

/// Retrieve the lazily-initialized thread-local random number
/// generator, seeded by the system. Intended to be used in method
/// chaining style, e.g. `thread_rng().gen::<i32>()`, or cached locally, e.g.
/// `let mut rng = thread_rng();`.
/// Retrieve the lazily-initialized thread-local random number generator,
/// seeded by the system. Intended to be used in method chaining style,
/// e.g. `thread_rng().gen::<i32>()`, or cached locally, e.g.
/// `let mut rng = thread_rng();`. Invoked by the `Default` trait, making
/// `ThreadRng::default()` equivelent.
///
/// For more information see [`ThreadRng`].
///
Expand All @@ -99,6 +100,12 @@ pub fn thread_rng() -> ThreadRng {
ThreadRng { rng: THREAD_RNG_KEY.with(|t| t.get()) }
}

impl Default for ThreadRng {
fn default() -> ThreadRng {
::prelude::thread_rng()
}
}

impl RngCore for ThreadRng {
#[inline(always)]
fn next_u32(&mut self) -> u32 {
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