https://stackoverflow.com/questions/31192956/whats-the-de-facto-way-of-reading-and-writing-files-in-rust-1-x https://rust-lang-nursery.github.io/rust-cookbook/encoding/csv.html#serialize-records-to-csv
https://stackoverflow.com/questions/31192956/whats-the-de-facto-way-of-reading-and-writing-files-in-rust-1-x
https://rust-lang-nursery.github.io/rust-cookbook/encoding/csv.html#serialize-records-to-csv