28 lines
567 B
Rust
28 lines
567 B
Rust
// This powerful wrapper provides the ability to store a positive integer value.
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// Rewrite it using generics so that it supports wrapping ANY type.
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struct Wrapper<T> {
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value: T,
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}
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// <T> must be both for impl and Wrapper
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impl<T> Wrapper<T> {
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pub fn new(value: T) -> Self {
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Wrapper { value }
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn store_u32_in_wrapper() {
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assert_eq!(Wrapper::new(42).value, 42);
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}
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#[test]
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fn store_str_in_wrapper() {
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assert_eq!(Wrapper::new("Foo").value, "Foo");
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}
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}
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