X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/2d40516a8393db1f27bb822ff95c71a1a9c82537..ab7f9b241429bd675b437d2437799de75d2f409b:/workspace/src/part01.rs

diff --git a/workspace/src/part01.rs b/workspace/src/part01.rs
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--- a/workspace/src/part01.rs
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-// 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. This is comparable 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,
-    }
-}
-
-// It is even the case that blocks are expressions, evaluating to the last expression they contain.
-fn compute_stuff(x: i32) -> i32 {
-    let y = { let z = x*x; z + 14 };
-    y*y
-}
-
-// 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 function `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.
-