Comment by rom-antics

If you want compact, use an array of tuples:

  const foos = [("foo", 1, "bar"), ("foo", 1, "bar"), ...];
  for (str1, num, str2) in &foos {
      // ...
  }

For a proper struct you have to name the fields, because otherwise refactoring the fields could cause struct instances to silently get out of sync with the definition.