100-exercises-to-learn-rust/exercises/04_traits/11_copy/src/lib.rs

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2024-05-13 04:21:03 +08:00
// TODO: implement the necessary traits to make the test compile and pass.
// You *can't* modify the test.
pub struct WrappingU32 {
value: u32,
}
impl WrappingU32 {
pub fn new(value: u32) -> Self {
Self { value }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_ops() {
let x = WrappingU32::new(42);
let y = WrappingU32::new(31);
let z = WrappingU32::new(u32::MAX);
assert_eq!(x + y + y + z, WrappingU32::new(103));
}
}