forEach method Null safety

void forEach(
  1. void action(
    1. T
    )
)

Invokes action on each element of this iterable in iteration order.

Example:

final numbers = <int>[1, 2, 6, 7];
numbers.forEach(print);
// 1
// 2
// 6
// 7

Implementation

void forEach(void Function(T) action) {
  _value.forEach(action);
}