addAndFilter<T> function

List<T> addAndFilter<T>(
  1. List<T> list,
  2. dynamic item,
  3. bool test(
    1. T item
    )
)

Implementation

List<T> addAndFilter<T>(List<T> list, item, bool Function(T item) test) => [
      item,
      for (var item in list)
        if (test(item)) item
    ];