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rustlings-exercises-completed/exercises/generics/generics2.rs

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// This powerful wrapper provides the ability to store a positive integer value.
// Rewrite it using generics so that it supports wrapping ANY type.
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// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a hint.
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struct Wrapper<T> {
value: T,
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}
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impl<T> Wrapper<T> {
pub fn new(value: T) -> Self {
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Wrapper { value }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn store_u32_in_wrapper() {
assert_eq!(Wrapper::new(42).value, 42);
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}
#[test]
fn store_str_in_wrapper() {
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assert_eq!(Wrapper::new("Foo").value, "Foo");
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}
}