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Refactor compare_license_types function

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Rock070 2024-01-03 00:28:39 +08:00
parent 4cf7b33094
commit 1f926b4358
1 changed files with 17 additions and 1 deletions
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18
exercises/15_traits/traits4.rs
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@ -23,7 +23,23 @@ impl Licensed for SomeSoftware {}
impl Licensed for OtherSoftware {} impl Licensed for OtherSoftware {}
// YOU MAY ONLY CHANGE THE NEXT LINE // YOU MAY ONLY CHANGE THE NEXT LINE
fn compare_license_types(software: ??, software_two: ??) -> bool {
// 1. straight foreword
// fn compare_license_types(software: impl Licensed, software_two: impl Licensed) -> bool {
// software.licensing_info() == software_two.licensing_info()
// }
// 2. trait bound
// fn compare_license_types<T: Licensed, P: Licensed>(software: T, software_two: P) -> bool {
// software.licensing_info() == software_two.licensing_info()
// }
// 3. trait bound + where clause
fn compare_license_types<T, P>(software: T, software_two: P) -> bool
where T: Licensed,
P: Licensed
{
software.licensing_info() == software_two.licensing_info() software.licensing_info() == software_two.licensing_info()
} }