customForEach method

void customForEach(
  1. void f(
    1. E? element,
    2. int index
    )
)

Implementation

void customForEach(void f(E? element, int index)) {
  for (var i = 0; i < (this?.length ?? 0); i++) {
    E? e = this?[i];
    f(e, i);
  }
}