rawIndex property Null safety

int rawIndex

The starting position of the current rune in the string.

Returns -1 if there is no current rune (current is -1).


int get rawIndex => (_position != _nextPosition) ? _position : -1;
void rawIndex= (int rawIndex)

Resets the iterator to the rune at the specified index of the string.

Setting a negative rawIndex, or one greater than or equal to string.length, is an error. So is setting it in the middle of a surrogate pair.

Setting the position to the end of then string means that there is no current rune.


void set rawIndex(int rawIndex) {
  RangeError.checkValidIndex(rawIndex, string, "rawIndex");