update: translate generics

exercise/exercises/generics/generics1.rs

@@ -1,7 +1,7 @@
-// This shopping list program isn't compiling!
-// Use your knowledge of generics to fix it.
+// 这个购物清单程序无法编译！
+// 用你对泛型的了解来解决这个问题。
 
-// Execute `rustlings hint generics1` for hints!
+// 执行 `rustlings hint generics1` 获取提示！
 
 // I AM NOT DONE
 

exercise/exercises/generics/generics2.rs

@@ -1,7 +1,7 @@
-// This powerful wrapper provides the ability to store a positive integer value.
-// Rewrite it using generics so that it supports wrapping ANY type.
+// 这个强大的 Wrapper 拥有存储一个正整数值的能力。
+// 利用泛型重写它，使它支持包装（wrapping）任何类型的值。
 
-// Execute `rustlings hint generics2` for hints!
+// 执行 `rustlings hint generics2` 获取提示！
 
 // I AM NOT DONE
 

exercise/exercises/generics/generics3.rs

@@ -1,14 +1,11 @@
-// An imaginary magical school has a new report card generation system written in Rust!
-// Currently the system only supports creating report cards where the student's grade
-// is represented numerically (e.g. 1.0 -> 5.5).
-// However, the school also issues alphabetical grades (A+ -> F-) and needs
-// to be able to print both types of report card!
+// 一所想象的魔法学院有一个采用 Rust 编写的新版成绩单生成系统！
+// 目前该系统仅支持创建以数字表示的成绩单（如 1.0 -> 5.5）。
+// 然而，学校也发布用字母表示的成绩（A+ -> F-），所以需要能够打印两种成绩单。
 
-// Make the necessary code changes in the struct ReportCard and the impl block
-// to support alphabetical report cards. Change the Grade in the second test to "A+"
-// to show that your changes allow alphabetical grades.
+// 在 ReportCard 结构定义和 impl 块中进行必要的代码修改，以支持用字母表示的成绩单。
+// 将第二个测试的 grade 改为 "A+"，用来表明代码已允许按字母表示成绩。
 
-// Execute 'rustlings hint generics3' for hints!
+// 执行 'rustlings hint generics3' 获取提示！
 
 // I AM NOT DONE
 
@@ -20,7 +17,7 @@ pub struct ReportCard {
 
 impl ReportCard {
     pub fn print(&self) -> String {
-        format!("{} ({}) - achieved a grade of {}",
+        format!("{} ({}) - achieved a grade of {}",// 译：{} ({}) - 成绩为 {}"
             &self.student_name, &self.student_age, &self.grade)
     }
 }
@@ -44,7 +41,7 @@ mod tests {
 
     #[test]
     fn generate_alphabetic_report_card() {
-        // TODO: Make sure to change the grade here after you finish the exercise.
+        // TODO：完成练习后，在这里更改 grade 的值。
         let report_card = ReportCard {
             grade: 2.1,
             student_name: "Gary Plotter".to_string(),

exercise/info.toml

@@ -516,18 +516,18 @@ name = "generics1"
 path = "exercises/generics/generics1.rs"
 mode = "compile"
 hint = """
-Vectors in rust make use of generics to create dynamically sized arrays of any type.
-You need to tell the compiler what type we are pushing onto this vector."""
+Rust 中的 Vector 通过泛型来创建任意类型的动态数组。
+所以你要告诉编译器，我们要把什么类型的元素推入到这个数组里。"""
 
 [[exercises]]
 name = "generics2"
 path = "exercises/generics/generics2.rs"
 mode = "test"
 hint = """
-Currently we are wrapping only values of type 'u32'.
-Maybe we could update the explicit references to this data type somehow?
+目前我们只包装了 'u32' 类型的值。
+或许我们可以通过某种方式来修改对类型的显式引用？
 
-If you are still stuck https://doc.rust-lang.org/stable/book/ch10-01-syntax.html#in-method-definitions
+如果你还没有头绪：https://doc.rust-lang.org/stable/book/ch10-01-syntax.html#in-method-definitions
 """
 
 [[exercises]]
@@ -535,12 +535,11 @@ name = "generics3"
 path = "exercises/generics/generics3.rs"
 mode = "test"
 hint = """
-To find the best solution to this challenge you're going to need to think back to your
-knowledge of traits, specifically Trait Bound Syntax -  you may also need this: "use std::fmt::Display;"
+为了找到解决这个难题的最佳方法，你需要回想一下有关 trait 的知识，特别是 trait 的绑定语法——可能
+还需要这个："use std::fmt::Display;"
 
-This is definitely harder than the last two exercises! You need to think about not only making the
-ReportCard struct generic, but also the correct property - you will need to change the implementation
-of the struct slightly too...you can do it!
+这绝对比前两个练习更难！你需要使 ReportCard 结构通用，并拥有正确的属性，同时
+你也需要稍微改变一下结构的实现……加油💪！
 """
 
 # OPTIONS