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32 lines
580 B
Rust
32 lines
580 B
Rust
// edition:2018
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// check-pass
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async fn foo<const N: usize>(arg: [u8; N]) -> usize { arg.len() }
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async fn bar<const N: usize>() -> [u8; N] {
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[0; N]
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}
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trait Trait<const N: usize> {
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fn fynn(&self) -> usize;
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}
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impl<const N: usize> Trait<N> for [u8; N] {
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fn fynn(&self) -> usize {
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N
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}
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}
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async fn baz<const N: usize>() -> impl Trait<N> {
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[0; N]
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}
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async fn biz<const N: usize>(v: impl Trait<N>) -> usize {
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v.fynn()
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}
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async fn user<const N: usize>() {
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let _ = foo::<N>(bar().await).await;
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let _ = biz(baz::<N>().await).await;
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}
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fn main() { }
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