2019-11-04 00:00:00 +00:00
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// check-pass
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2018-07-28 17:22:42 +00:00
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fn fibs(n: u32) -> impl Iterator<Item=u128> {
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(0 .. n)
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.scan((0, 1), |st, _| {
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*st = (st.1, st.0 + st.1);
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Some(*st)
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})
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.map(&|(f, _)| f)
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}
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fn main() {
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println!("{:?}", fibs(10).collect::<Vec<_>>());
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}
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