l = [i | i <- 1..4]
assert l == [1, 2, 3, 4]
lc = [i * 2 | i <- 1..4]
assert lc == [2, 4, 6, 8]
lc2 = [i + 1 | i <- 1..5 | i <= 3]
assert lc2 == [2, 3, 4]
lc3 = [i <- 1..10 | i <= 5]
assert lc3 == [1, 2, 3, 4, 5]
lc4 = [i * 5 | i <- 1..15 | i <= 5]
assert lc4 == [5, 10, 15, 20, 25]

s = {i | i <- [1, 2, 1, 2]}
assert s == {1, 2}
sc = {i * 2 | i <- 1..4}
assert sc == {2, 4, 6, 8}
sc2 = {i + 1 | i <- 1..5 | i <= 3}
assert sc2 == {2, 3, 4}
sc3 = {i <- 1..10 | i <= 5}
assert sc3 == {1, 2, 3, 4, 5}
sc4 = {i % 5 | i <- 1..100 | i % 5 != 0}
assert sc4 == {1, 2, 3, 4}