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use anyhow::{ensure, Result};
use std::ops::{Deref, Not};
struct Bool(bool);
struct DerefBool(bool);
struct NotBool(bool);
impl Deref for DerefBool {
type Target = bool;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl Not for NotBool {
type Output = bool;
fn not(self) -> Self::Output {
!self.0
}
}
fn main() -> Result<()> {
ensure!("...");
let mut s = Bool(true);
match &mut s {
Bool(cond) => ensure!(cond),
}
let db = DerefBool(true);
ensure!(db);
ensure!(&db);
let nb = NotBool(true);
ensure!(nb);
Ok(())
}
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