File: ruby_style_closure_successful_parse.rs

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rustc 1.88.0%2Bdfsg1-2
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const x: usize =42;
fn main() {
    let p = Some(45).and_then({|x| //~ ERROR expected a `FnOnce({integer})` closure, found `Option<usize>`
        1 + 1;
        Some(x * 2)
    });
}