add method

@override void add(E value)

Adds value to the end of this list, extending the length by one.

The list must be growable.

final numbers = <int>[1, 2, 3];
numbers.add(4);
print(numbers); // [1, 2, 3, 4]

Implementation

@override
void add(E value) {
  if (!growable) {
    throw UnsupportedError('Cannot add values to a fixed-length list.');
  }
  elements.add(value);
}