remove<T> function

List<T> remove<T>(List<T> array, [ bool predicate(T)? ])

Removes all elements from the array for which the predicate returns true and returns a new list containing the removed elements.

The predicate function is invoked with three arguments: (value, index, array).

If no predicate is provided, it defaults to null, removing all elements that are equivalent to true.

Example:

var array = [1, 2, 3, 4];
var evens = remove(array, (n) => n % 2 == 0);

print(array); // => [1, 3]
print(evens); // => [2, 4]

Implementation

List<T> remove<T>(List<T> array, [bool Function(T)? predicate]) {
  List<T> removed = [];
  int i = 0;
  while (i < array.length) {
    if (predicate == null || predicate(array[i])) {
      removed.add(array.removeAt(i));
    } else {
      i++;
    }
  }
  return removed;
}