length property

@override int length

The number of objects in this list.

The valid indices for a list are 0 through length - 1.

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

Implementation

@override
int get length => _drl.length;

@override void length=(int newLength)

DateRemindList can not assign new length

It will throws UnsupportedError if did it

Implementation

@override
set length(int newLength) =>
    throw UnsupportedError("You can't assign new length in this list");