Tally¶ Counts occurrences of each distinct element. $ wo 'Tally[{a, b, a, c, b, a}]' {{a, 3}, {b, 2}, {c, 1}} $ wo 'Tally[{1, 2, 1, 3}]' {{1, 2}, {2, 1}, {3, 1}} $ wo 'Tally[{x, x, x}]' {{x, 3}} $ wo 'Tally[{}]' {}