mapIndexed<R> method

Iterable<R> mapIndexed<R>(
  1. R fun(
    1. int index,
    2. T item
    )
)

Gives possibility to use index in map function

Implementation

Iterable<R> mapIndexed<R>(R Function(int index, T item) fun) {
  var i = 0;
  return map((e) => fun(i++, e));
}