Week 4

Question 1

What is a Conditional Expression?

Answer 1

Evaluates to one expression or the other, depending on the value of a boolean expression

Question 2

What is a Case Expression?

Answer 2

Evaluates the expression to a given case

case c of

“u” -> (x,y+1)
“d” -> (x,y-1)
“l” -> (x-1,y)

…

Question 3

What is the generate-and-select design pattern?

Answer 3

Can be used to describe good solution to the problem, obtained by filtering values from a generator using a selector

Question 4

What is the Selector?

Answer 4

The Selector can be used to filter out those values that might provide solutions to the problem

Question 5

What is Polymorphism?

Answer 5

Polymorphism is a key concept in computer science and programming that allows entities to take on multiple forms

It can refer to various programming paradigms, including object-oriented programming (OOP) and functional programming

Question 6

What is the 2 problems of Code Copying?

Answer 6

Error prone - errors must be fixed in every copy

Inefficient - space must be allocated for every copy