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17 lines
234 B
Rust
17 lines
234 B
Rust
use std::fmt::Display;
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trait Foo {
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fn bar(&self) -> impl Display;
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}
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impl Foo for () {
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fn bar(&self) -> impl Display {
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"Hello, world"
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}
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}
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fn main() {
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let x: &str = ().bar();
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//~^ ERROR mismatched types
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}
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