What are the differences between WaitGroups and Channels in Go?

What are the differences between WaitGroups and Channels in Go?

WaitGroups and Channels are both concurrency primitives in Go, but they serve different purposes. WaitGroups are used to wait for a collection of goroutines to finish executing, while Channels are used for communication between goroutines.

Can you explain how to use WaitGroups?

Sure! You create a WaitGroup, then add the number of goroutines you want to wait for using Add(). Each goroutine calls Done() when it finishes, and you call Wait() to block until all goroutines have completed.

And how do Channels work?

Channels allow goroutines to communicate by sending and receiving values. You can create a channel using make(chan Type), and use the <- operator to send and receive data.

When should I use one over the other?

Use WaitGroups when you need to wait for multiple goroutines to finish, and use Channels when you need to pass data between goroutines.