operator []= method Null safety

void operator []= (
  1. int index,
  2. TextTrackCue value
)
override

Sets the value at the given index in the list to value or throws a RangeError if index is out of bounds.

Implementation

void operator []=(int index, TextTrackCue value) {
  throw new UnsupportedError("Cannot assign element of immutable List.");
}