From f43c6d78770ac90725490344dad98b9d3c076484 Mon Sep 17 00:00:00 2001 From: Sam White Date: Fri, 25 Feb 2022 16:40:38 +0000 Subject: [PATCH] feat: Add traits3.rs exercise --- exercises/traits/traits3.rs | 40 +++++++++++++++++++++++++++++++++++++ info.toml | 12 +++++++++++ 2 files changed, 52 insertions(+) create mode 100644 exercises/traits/traits3.rs diff --git a/exercises/traits/traits3.rs b/exercises/traits/traits3.rs new file mode 100644 index 0000000..917ded7 --- /dev/null +++ b/exercises/traits/traits3.rs @@ -0,0 +1,40 @@ +// traits3.rs +// +// Your task is to implement the Licensed trait for +// both structures and have them return the same +// information without writing the same function twice. +// +// Consider what you can add to the Licensed trait. + +// I AM NOT DONE + +pub trait Licensed { + fn licensing_info(&self) -> String; +} + +struct SomeSoftware { + version_number: i32, +} + +struct OtherSoftware { + version_number: String, +} + +impl Licensed for SomeSoftware {} // Don't edit this line +impl Licensed for OtherSoftware {} // Don't edit this line + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn is_licensing_info_the_same() { + let licensing_info = String::from("Some information"); + let some_software = SomeSoftware { version_number: 1 }; + let other_software = OtherSoftware { + version_number: "v2.0.0".to_string(), + }; + assert_eq!(some_software.licensing_info(), licensing_info); + assert_eq!(other_software.licensing_info(), licensing_info); + } +} diff --git a/info.toml b/info.toml index bc2a91c..971f515 100644 --- a/info.toml +++ b/info.toml @@ -704,6 +704,18 @@ what the result should look like! Vectors provide suitable methods for adding an element at the end. See the documentation at: https://doc.rust-lang.org/std/vec/struct.Vec.html""" +[[exercises]] +name = "traits3" +path = "exercises/traits/traits3.rs" +mode = "test" +hint = """ +Traits can have a default implementation for functions. Structs that implement +the trait can then use the default version of these functions if they choose not +implement the function themselves. + +See the documentation at: https://doc.rust-lang.org/book/ch10-02-traits.html#default-implementations +""" + # QUIZ 3 [[exercises]]