istAntiSym (Gr [[True,True,True],[True,True,True],[True,True,True]]) == False
istAntiSym (Re [[0,0,1],[1,1,1],[0,0,1]]) == True
istAntiSym (Re [[0,0,1],[1,1,1],[1,0,1]]) == False

quickSort [2,5,4,6,1,5,3] == [1,2,3,4,5,5,6]
quickSort [2,5,4] == [2,4,5]

fib 2 == 1
fib 6 == 8

quickSortE [2,5,4,6,1,5,3] == Nothing
quickSortE [2,5,4] == Just [2,4,5]

fibE 6 == Just 8
fibE (-5) == Nothing