chay.dev
Going through rustlings for the first time
1// Type casting in Rust is done via the usage of the `as` operator.
2// Note that the `as` operator is not only used when type casting. It also helps
3// with renaming imports.
4
5fn average(values: &[f64]) -> f64 {
6 let total = values.iter().sum::<f64>();
7 // TODO: Make a conversion before dividing.
8 total / values.len() as f64
9}
10
11fn main() {
12 let values = [3.5, 0.3, 13.0, 11.7];
13 println!("{}", average(&values));
14}
15
16#[cfg(test)]
17mod tests {
18 use super::*;
19
20 #[test]
21 fn returns_proper_type_and_value() {
22 assert_eq!(average(&[3.5, 0.3, 13.0, 11.7]), 7.125);
23 }
24}