-// Rust-101, Part 01: Expressions, Inherent methods
-// ================================================
-
-// For Rust to compile this file, make sure to enable the corresponding line
-// in `main.rs` before going on.
-
-
-// ## Expression-based programming
-fn sqr(i: i32) -> i32 { i * i }
-
-// Conditionals are also just expressions. You can compare this to the ternary `? :` operator
-// from languages like C.
-fn abs(i: i32) -> i32 { if i >= 0 { i } else { -i } }
-
-enum NumberOrNothing {
- Number(i32),
- Nothing
-}
-use self::NumberOrNothing::{Number,Nothing};
-fn number_or_default(n: NumberOrNothing, default: i32) -> i32 {
- match n {
- Nothing => default,
- Number(n) => n,
- }
-}
-
-// Let us now refactor `vec_min`.
-fn vec_min(v: Vec<i32>) -> NumberOrNothing {
- fn min_i32(a: i32, b: i32) -> i32 {
- unimplemented!()
- }
-
- let mut min = Nothing;
- for e in v {
- unimplemented!()
- }
- min
-}
-
-// Now that's already much shorter! Make sure you can go over the code above and actually understand
-// every step of what's going on.
-
-// ## Inherent implementations
-impl NumberOrNothing {
- fn print(self) {
- match self {
- Nothing => println!("The number is: <nothing>"),
- Number(n) => println!("The number is: {}", n),
- };
- }
-}
-
-// With our refactored functions and methods, `main` now looks as follows:
-fn read_vec() -> Vec<i32> {
- vec![18,5,7,2,9,27]
-}
-pub fn main() {
- let vec = read_vec();
- let min = vec_min(vec);
- unimplemented!()
-}
-// You will have to replace `part00` by `part01` in the `main` function in
-// `main.rs` to run this code.
-
-// **Exercise 01.1**: Write a funtion `vec_sum` that computes the sum of all values of a `Vec<i32>`.
-
-// **Exercise 01.2**: Write a function `vec_print` that takes a vector and prints all its elements.
-