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doc: add example for Iterator::cloned() #25758

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May 25, 2015
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doc: add example for Iterator::cloned() #25758

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15 changes: 13 additions & 2 deletions src/libcore/iter.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1009,8 +1009,19 @@ pub trait Iterator {
(ts, us)
}

/// Creates an iterator that clones the elements it yields. Useful for
/// converting an Iterator<&T> to an Iterator<T>.
/// Creates an iterator that clones the elements it yields.
///
/// This is useful for converting an Iterator<&T> to an Iterator<T>,
/// so it's a more convenient form of `map(|&x| x)`.
///
/// # Examples
///
/// ```
/// let a = [0, 1, 2];
/// let v_cloned: Vec<_> = a.iter().cloned().collect();
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What is a? And the code fence isn't closed.

(On Mobile, maybe getting a weird render)

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fixed

/// let v_map: Vec<_> = a.iter().map(|&x| x).collect();
/// assert_eq!(v_cloned, v_map);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn cloned<'a, T: 'a>(self) -> Cloned<Self>
where Self: Sized + Iterator<Item=&'a T>, T: Clone
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