Records and Destructuring - Dart Programming

A record (a, b) groups values without declaring a class. var (x, y) = record destructures them into bindings.

Program

Play the program to return min and max as a record and destructure them.

records_destructure.dart

(int, int) minMax(List<int> xs) {
  var lo = xs.reduce((a, b) => a < b ? a : b);
  var hi = xs.reduce((a, b) => a > b ? a : b);
  return (lo, hi);
}

void main() {
  var (lo, hi) = minMax([7, 2, 9, 4]);
  print('$lo $hi');
}

record type `(int, int)` is a record with two positional fields.

destructuring `var (lo, hi) = ...` pulls each field into a name.

multiple return Records let a function return more than one value without a class.