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https://github.com/rust-lang/rustlings.git
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2ec9c0957e
- Renamed/ordered the directories for macros, clippy, and conversions, shifting them all one up in numerical order to fit async as number 21 - Added the 21_async directories in exercises and solutions - Added async1.rs in the 21_async directory in exercises and solutions - Added async to the info.toml in rustlings-macros and reordered the rest of the exercises in there as well - Created an exercise for async1 and its solution
25 lines
592 B
Rust
25 lines
592 B
Rust
// Type casting in Rust is done via the usage of the `as` operator.
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// Note that the `as` operator is not only used when type casting. It also helps
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// with renaming imports.
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fn average(values: &[f64]) -> f64 {
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let total = values.iter().sum::<f64>();
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// TODO: Make a conversion before dividing.
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total / values.len()
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}
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fn main() {
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let values = [3.5, 0.3, 13.0, 11.7];
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println!("{}", average(&values));
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn returns_proper_type_and_value() {
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assert_eq!(average(&[3.5, 0.3, 13.0, 11.7]), 7.125);
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}
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}
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