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rustlings/exercises/14_generics/generics2.rs
2024-06-27 02:25:11 +02:00

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Rust

// This powerful wrapper provides the ability to store a positive integer value.
// TODO: Rewrite it using a generic so that it supports wrapping ANY type.
struct Wrapper {
value: u32,
}
// TODO: Adapt the struct's implementation to be generic over the wrapped value.
impl Wrapper {
fn new(value: u32) -> Self {
Wrapper { value }
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn store_u32_in_wrapper() {
assert_eq!(Wrapper::new(42).value, 42);
}
#[test]
fn store_str_in_wrapper() {
assert_eq!(Wrapper::new("Foo").value, "Foo");
}
}