use crypto::sha1;
use encoding::hex;
use fmt;
use hash;
use os;
use strings;

export fn main() void = {
   const sha = sha1::sha1();
   hash::write(&sha, strings::toutf8("Rosetta Code"));

   let sum: [sha1::SIZE]u8 = [0...];
   hash::sum(&sha, sum);
   hex::encode(os::stdout, sum)!;
   fmt::println()!;
};