How to synchronize goroutines with waitgroups

The video tutorial explains the use of wait groups in Go for managing asynchronous programming with goroutines. It covers how to use the sync package to create wait groups, add and manage goroutines, and ensure all tasks complete before proceeding. The tutorial emphasizes the importance of passing wait groups by reference and using defer for the done method. It concludes with best practices and a summary of the asynchronous execution process.

What happens if you do not pass a pointer to the wait group in a goroutine?

Describe the significance of using 'defer' with the 'done' method in a goroutine.