11 lines
285 B
Rust
11 lines
285 B
Rust
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trait Stream { type Item; }
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impl<'a> Stream for &'a str { type Item = u8; }
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fn f<'s>(s: &'s str) -> (&'s str, <&'s str as Stream>::Item) {
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(s, 42)
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}
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fn main() {
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let fx = f as for<'t> fn(&'t str) -> (&'t str, <&'t str as Stream>::Item);
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assert_eq!(fx("hi"), ("hi", 42));
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}
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