Access to Tuples

For tuples of two elements, it can be accessed with fst and snd:

fst :: (a, b) -> a
snd :: (a, b) -> b

fst (3, "sense")    3
snd(3, "sense")     "sense"

For general tuples, no accessor functions are defined

• They can be easily created using patterns:

first (x, y, z) = x
second (x, y, z) = y
third (x, y, z) = z

first (x, _, _) = x
second (_, y, _) = y
third (_, _, z) = z