gistfile1.rs

use std;
import result::{result, ok, chain};

fn read_file(filename: str) -> result<@str, @str> {
  ret ok(@("<contents of " + filename + ">"));
}

fn parse_buf(buf: @str) -> @str {
  ret @("<parsed: " + *buf + ">");
}

fn main(_args: ~[str]) {
  let res = do chain(read_file("foo")) |buf| {
    ok(parse_buf(buf))
  };

  log(info, res);
}