KVList = [{a, 1}, {a, 5}, {b, 3}, {c, 4}, {c, 4}],
Dict = DictModule:of_kv_list(KVList),
17 = DictModule:fold(Dict, fun (_K, V, Acc) -> V + Acc end, 0).
KVList = [{a, 1}, {a, 5}, {b, 3}, {c, 4}, {c, 4}],
Dict = DictModule:of_kv_list(KVList),
17 = DictModule:fold(Dict, fun (_K, V, Acc) -> V + Acc end, 0).