mapIndex method

Iterable<T?> mapIndex(
  1. T? toElement(
    1. int idx,
    2. T? x
    )
)

The current elements of this iterable modified by toElement.

Implementation

Iterable<T?> mapIndex(T? Function(int idx, T? x) toElement) {
  var index = 0;
  return map((x) => toElement(index++, x));
}