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https://github.com/rust-lang/rust
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17 lines
353 B
Rust
17 lines
353 B
Rust
//@ run-pass
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#![allow(stable_features)]
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// Test to see that the element type of .cloned() can be inferred
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// properly. Previously this would fail to deduce the type of `sum`.
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#![feature(iter_arith)]
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fn square_sum(v: &[i64]) -> i64 {
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let sum: i64 = v.iter().cloned().sum();
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sum * sum
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}
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fn main() {
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assert_eq!(36, square_sum(&[1,2,3]));
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}
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