fn main() {
    let penguin_data = "\
    common name, length (cm)
    Little penguin,33
    Yello-eyed penguin,65
    Fiordland penguin,60
    Invalid,data
    ";
    let records = penguin_data.lines();
    for (i, record) in records.enumerate() {
        if i == 0 || record.trim().len() == 0 {
            continue;
        }
        let fields: Vec<_> = record.split(',').map(|field| field.trim()).collect();
        if cfg!(debug_assertions) {
            eprintln!("debug : {:?} -> {:?}", record, fields)
        }
        let name = fields[0];
        if let Ok(length) = fields[1].parse::<f32>() {
            println!("{}, {} cm", name, length);
        }
    }
}


파이썬만큼 우웩스러움