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Diffstat (limited to 'src/test/ui/impl-trait/issue-49579.rs')
-rw-r--r-- | src/test/ui/impl-trait/issue-49579.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/issue-49579.rs b/src/test/ui/impl-trait/issue-49579.rs new file mode 100644 index 000000000..98de014e9 --- /dev/null +++ b/src/test/ui/impl-trait/issue-49579.rs @@ -0,0 +1,14 @@ +// check-pass + +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<_>>()); +} |