How to safely close multiple channels using a select statement and sync in Golang?

To safely close multiple channels using a select statement and sync in Golang, you can follow these steps:

Import the required packages.

import (
    "sync"
)

Declare the channels and a wait group.

ch1 := make(chan bool)
ch2 := make(chan bool)
wg := sync.WaitGroup{}

Create a function to safely close the channels.

func safeClose(ch chan bool) {
    defer wg.Done() // Notify wait group that the function is done
    select {
    case _, ok := <- ch:
        if ok {
            close(ch) // Close the channel if it still open
        }
    default:
        // Channel is already closed
    }
}

Initialize the wait group.

wg.Add(2) // Number of channels to close

Start goroutines to close the channels.

go safeClose(ch1)
go safeClose(ch2)

Wait for the goroutines to finish.

wg.Wait() // Wait until all the goroutines are done

By following these steps, you can safely close multiple channels using a select statement and sync in Golang.