Singleton

Question 1

Intent/Purpose

Answer 1

Ensure class has one and only one instance with a global point of access

Question 2

Controlled access to sole instance

Answer 2

Consequence

Question 3

Reduced name space

Answer 3

Consequence

Question 4

More flexible than class operations

Answer 4

Consequence

Question 5

Ensuring a unique instance

Answer 5

Implementation

Question 6

Sub classing the Singleton class

Answer 6

Implementation