mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-12-27 00:00:03 +03:00
32 lines
580 B
Rust
32 lines
580 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 {
|
|
pub 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");
|
|
}
|
|
}
|