We have range 10..15 which has elements: 10, 11, 12, 13, 14 but not 15 Recommend operator ..= as in 10..=15 or operator ... as in 10...15 This would produce inclusive range of elements: 10, 11, 12, 13, 14, 15 These operators are in other languages. I am sure that I am not the first to recommend this.