sumByDouble method

double sumByDouble(
  1. double selector(
    1. E element
    )
)

Returns the sum of selector applied to each element as a double.

Example:

[1.5, 2.5].sumByDouble((n) => n); // 4.0

Implementation

double sumByDouble(double Function(E element) selector) {
  double total = 0;
  for (final E element in this) {
    total += selector(element);
  }
  return total;
}