Type Classes

Question 1

What is the Eq class

Answer 1

Equality class provides (==) and (/=) methods.
All basic data types except functions and IO are instances of this class.

Question 2

What is the Ord class

Answer 2

Equality class provides (<=) and () and (>=) methods.
All basic data types except functions and IO are instances of this class.

Question 3

What is the Show class

Answer 3

Show class provides the method
show :: a -> String

Can be applied by putting 'show tree' for instance. (as long as the tree class derives show)
All basic data types except functions and IO are instances of this class.

Question 4

What is the Read class

Answer 4

Read class provides the method
Read :: String -> a

Can be applied by putting 'show(read string :: Tree Int)' for instance. (as long as the class that the string is derives show and read).
All basic data types except functions and IO are instances of this class.