Exercise2.1.md

Exercise 2.1 - Basics

If you do not finish during the lecture period, please finish it as homework.

Pointers (swap.go)

• Write a function to swap two integer variables in the caller function
• Write a function to swap two integer pointers in the caller function (2 ways)
• Write test example code ExampleSwap inside a swap_test file

Questions

What is the difference between a pointer and a Java object reference? What happens if you assign nil to a pointer variable and dereference the pointer?

After this Exercise

• You know difference between Pointers and Values
• You know how to write basic unit tests