Go Select Statement: Mastering Concurrent Channel Operations

Introduction

This challenge aims to test your knowledge of Go's select statement, which allows you to wait on multiple channel operations.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL go(("`Go`")) -.-> go/ConcurrencyGroup(["`Concurrency`"]) go/ConcurrencyGroup -.-> go/select("`Select`") subgraph Lab Skills go/select -.-> lab-15423{{"`Go Select Statement`"}} end

Select

In this challenge, you are given two channels, c1 and c2, which will receive a value after some amount of time. Your task is to use select to await both of these values simultaneously, printing each one as it arrives.

Requirements

You should use the select statement to wait on both channels.
You should print the value received from each channel as it arrives.

Example

## We receive the values `"one"` and then `"two"` as
## expected.
$ time go run select.go
received one
received two

## Note that the total execution time is only ~2 seconds
## since both the 1 and 2 second `Sleeps` execute
## concurrently.
real 0m2.245s

Summary

This challenge tests your ability to use the select statement in Go to wait on multiple channel operations. By completing this challenge, you will gain a better understanding of how to use select to coordinate concurrent goroutines.

Go Select Statement