Parse CSV

fn main() { let csv_data = " name,age name1, 1 name2, 2 name3, not a number name4, 4 name5, 5 name6, 6 "; let records = csv_data.lines(); // 有效数据行号 let mut line_num = 0; for record in records { let is_empty_line = record.trim().len() == 0; if is_empty_line { continue; } // 跳过表头 if line_num == 0 { line_num += 1; continue; } let parsed_data = record .split(',') .map(|field| field.trim()) .collect::<Vec<_>>(); let name = parsed_data[0]; if let Ok(age) = parsed_data[1].parse::<i32>() { println!("{line_num}: name is {name}, age is {}!", age); } else { println!("{line_num}: name is {name}, age is NAN!"); } line_num += 1; } }