sum property

@useResult E sum

The sum of all elements in this iterable. Returns double.nan if present.

[1, 2, 3].sum; // 6

Implementation

@useResult E get sum {
  num sum = 0;
  for (final element in this) {
    sum += element;
  }

  // Dart is fucking stupid for not allowing implicit conversions between integers and doubles.
  return (E == int ? sum.toInt() : sum.toDouble()) as E;
}