Rust

8.5    Solutions

This section provides the code solutions for the practice exercises in Section 8.4. The code is largely self-explanatory; however, we have included comments and additional explanations wherever necessary to enhance understanding.

1. Generic enum for basic mathematical operations

   enum Operation<T> {    Addition(T, T),    Subtraction(T, T),    Multiplication(T, T),    Division(T, T),}fn main() {    let op_1 = Operation::Addition(5, 10);    let op_2 = Operation::Multiplication(3.5, 2.0);    let op_3 = Operation::Subtraction(3.5, 2.0);    let op_4 = Operation::Division(2, 3);}  

2. Fix the generic create method in the Container struct

   struct Container<T> {    value: T,}impl<T> Container<T> {    fn new(value: T) -> Container<T> {   /* we need to remove duplicate