Tute Exercises, Week 2

Basic Haskell

This week we don't have tutorial exercises, but the following items should be revised to avoid problems with the lab exercises.

Simple Functions over Numbers and Strings

• How does the representation of values of type Int and Float differ?
• Basic arithmetic functions (+, -, *, /, div, and mod; discuss the difference between / and div).
• Basic operations on list of numerals ([x..y], [x, y..x], sum, and product)
• Basic string manipulation (++, head, tail, and length)

Function Definitions

The following definitions from the lecture should be understood:

module MyPrgm 
where

inc   :: Int -> Int
inc x  = x + 1

average     :: Float -> Float -> Float
average a b  = (a + b) / 2.0
      

• a variable,
• a function, or
• a module?