learning-haskell/11-algebraic-datatypes/11.14-the-quad.md

Exercises: The Quad

Exercise 1

Either is a sum type, so eQuad has 4 + 4 = 8 inhabitants.

Exercise 2

(,) is a product type, so prodQuad has 4 * 4 = 16 inhabitants.

Exercise 3

(->) is an exponential type, so funcQuad has 4 ^ 4 = 256 inhabitants.

Exercise 4

(,,) is a product type, so prodTBool has 2 * 2 * 2 = 8 inhabitants.

Exercise 5

(->) is an exponential type, so gTwo has (2 ^ 2) ^ 2 = 16 inhabitants.

Exercise 6

(->) is an exponential type, so fTwo has (4 ^ 4) ^ 2 = 65536 inhabitants.