| use std::error::Error; |
| use std::io; |
| use std::process; |
| |
| // This introduces a type alias so that we can conveniently reference our |
| // record type. |
| type Record = (String, String, Option<u64>, f64, f64); |
| |
| fn run() -> Result<(), Box<dyn Error>> { |
| let mut rdr = csv::Reader::from_reader(io::stdin()); |
| // Instead of creating an iterator with the `records` method, we create |
| // an iterator with the `deserialize` method. |
| for result in rdr.deserialize() { |
| // We must tell Serde what type we want to deserialize into. |
| let record: Record = result?; |
| println!("{:?}", record); |
| } |
| Ok(()) |
| } |
| |
| fn main() { |
| if let Err(err) = run() { |
| println!("{}", err); |
| process::exit(1); |
| } |
| } |
