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Finished Generics 3!

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This commit is contained in:
Justin Kelz 2022-05-01 08:51:08 -07:00
parent de77d1b223
commit ab28f35935
1 changed files with 4 additions and 5 deletions
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9
exercises/generics/generics3.rs
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@ -10,15 +10,14 @@
// Execute 'rustlings hint generics3' for hints! // Execute 'rustlings hint generics3' for hints!
// I AM NOT DONE
pub struct ReportCard { pub struct ReportCard<T> { // Tell the struct that ReportCard can have an arbitrary type T
pub grade: f32, pub grade: T, // specify that grade is of ambiguious type
pub student_name: String, pub student_name: String,
pub student_age: u8, pub student_age: u8,
} }
impl ReportCard { impl<T: std::fmt::Display> ReportCard<T> { // Listen to the compiler for impl, and then implement an arbitrary ReportCard type T.
pub fn print(&self) -> String { pub fn print(&self) -> String {
format!("{} ({}) - achieved a grade of {}", format!("{} ({}) - achieved a grade of {}",
&self.student_name, &self.student_age, &self.grade) &self.student_name, &self.student_age, &self.grade)
@ -46,7 +45,7 @@ mod tests {
fn generate_alphabetic_report_card() { fn generate_alphabetic_report_card() {
// TODO: Make sure to change the grade here after you finish the exercise. // TODO: Make sure to change the grade here after you finish the exercise.
let report_card = ReportCard { let report_card = ReportCard {
grade: 2.1, grade: "A+", // I actually forgot to modify Arry's grade!
student_name: "Gary Plotter".to_string(), student_name: "Gary Plotter".to_string(),
student_age: 11, student_age: 11,
}; };