Old Russian measure of length: Difference between revisions

length_float = match args[1].parse::<f32>() {

Ok(length_float) => length_float,

Err(..) => 1 as f32,

};

let unit: &str = &args[2];

if ! units.contains_key(unit) {

let mut keys: Vec<&str> = Vec::new();

for i in units.keys() {

};

eprintln!("The correct units are: {}.", keys.join(", "));

process::exit(1);

};

println!(" {}: {:?}", lunit, length_float * units.get(unit).unwrap() / length);