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Copy is best avoided on iterators

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Simon Sapin 2018-11-15 14:22:21 +01:00
parent 544ad37753
commit 22228186c0
1 changed files with 1 additions and 1 deletions
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src/libcore/iter/sources.rs
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@ -444,7 +444,7 @@ pub fn unfold<St, T, F>(initial_state: St, f: F) -> Unfold<St, F>
/// See its documentation for more.
///
/// [`unfold`]: fn.unfold.html
#[derive(Copy, Clone)]
#[derive(Clone)]
#[unstable(feature = "iter_unfold", issue = /* FIXME */ "0")]
pub struct Unfold<St, F> {
state: St,