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clippy 0.0.155 - Docs.rs
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clippy 0.0.155

A bunch of helpful lints to avoid common pitfalls in Rust
Documentation 
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#![feature(plugin)]
#![plugin(clippy)]

#[allow(dead_code)]
enum Baz {
    One,
    Two,
}

struct Test {
    t: Option<usize>,
    b: Baz,
}

fn main() {
    use Baz::*;
    let x = Test { t: Some(0), b: One };

    match x {
        Test { t: Some(_), b: One } => unreachable!(),
        Test {
            t: Some(42),
            b: Two,
        } => unreachable!(),
        Test { t: None, .. } => unreachable!(),
        Test { .. } => unreachable!(),
    }
}