15 lines
327 B
Rust
15 lines
327 B
Rust
// build-pass (FIXME(62277): could be check-pass?)
|
|
// ignore-emscripten no i128 support
|
|
|
|
fn fibs(n: u32) -> impl Iterator<Item=u128> {
|
|
(0 .. n)
|
|
.scan((0, 1), |st, _| {
|
|
*st = (st.1, st.0 + st.1);
|
|
Some(*st)
|
|
})
|
|
.map(&|(f, _)| f)
|
|
}
|
|
|
|
fn main() {
|
|
println!("{:?}", fibs(10).collect::<Vec<_>>());
|
|
}
|