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rustlings/exercises/15_traits/traits4.rs

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trait Licensed {
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fn licensing_info(&self) -> String {
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"Default license".to_string()
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}
}
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struct SomeSoftware;
struct OtherSoftware;
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impl Licensed for SomeSoftware {}
impl Licensed for OtherSoftware {}
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// TODO: Fix the compiler error by only changing the signature of this function.
fn compare_license_types(software1: ???, software2: ???) -> bool {
software1.licensing_info() == software2.licensing_info()
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}
fn main() {
// You can optionally experiment here.
}
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#[cfg(test)]
mod tests {
use super::*;
#[test]
fn compare_license_information() {
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assert!(compare_license_types(SomeSoftware, OtherSoftware));
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}
#[test]
fn compare_license_information_backwards() {
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assert!(compare_license_types(OtherSoftware, SomeSoftware));
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}
}