File: chained-comparison.rs

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rust-anyhow 1.0.99-1
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use anyhow::{ensure, Result};

fn main() -> Result<()> {
    // `ensure!` must not partition this into `(false) == (false == true)`
    // because Rust doesn't ordinarily allow this form of expression.
    ensure!(false == false == true);
    Ok(())
}