addAllIf method Null safety

void addAllIf(
  1. dynamic condition,
  2. Iterable<E> items
)

Adds Iterable<E> to List<E> only if condition is true.

Implementation

void addAllIf(dynamic condition, Iterable<E> items) {
  if (condition is Condition) condition = condition();
  if (condition is bool && condition) addAll(items);
}