examples [ [the < length < of < list < emptylist < is < 0] [the < length < of < list < ["a"] < is < 1] [the < length < of < list < ["a", "b"] < is < 2] [the < length < of < list < ["yo", "hey", "what"] < is < 3] ] implementation [ [the < length < of < list < X < is < countStars(X)] ]