16 lines
283 B
Rust
16 lines
283 B
Rust
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// edition:2021
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async fn foo() -> Result<(), String> {
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Ok(())
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}
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fn convert_result<T, E>(r: Result<T, E>) -> Option<T> {
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None
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}
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fn main() -> Option<()> {
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//~^ ERROR `main` has invalid return type `Option<()>`
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convert_result(foo())
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//~^ ERROR mismatched types
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}
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