rustlings/exercises/14_generics/generics2.rs
2024-05-22 15:04:12 +02:00

32 lines
576 B
Rust

// This powerful wrapper provides the ability to store a positive integer value.
// Rewrite it using generics so that it supports wrapping ANY type.
struct Wrapper {
value: u32,
}
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");
}
}