File: option-to-result.rs

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rustc 1.88.0%2Bdfsg1-1
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fn main(){ }

fn test_result() -> Result<(),()> {
    let a:Option<()> = Some(());
    a?;//~ ERROR the `?` operator can only be used
    Ok(())
}

fn test_option() -> Option<i32>{
    let a:Result<i32, i32> = Ok(5);
    a?;//~ ERROR the `?` operator can only be used
    Some(5)
}