I am basically looking for Nim's alternative to Go's `WaitGroup`
package main
import (
"fmt"
"sync"
"time"
)
func main() {
messages := make(chan int)
var wg sync.WaitGroup
// you can also add these one at
// a time if you need to
wg.Add(3)
go func() {
defer wg.Done()
time.Sleep(time.Second * 3)
messages <- 1
}()
go func() {
defer wg.Done()
time.Sleep(time.Second * 2)
messages <- 2
}()
go func() {
defer wg.Done()
time.Sleep(time.Second * 1)
messages <- 3
}()
go func() {
for i := range messages {
fmt.Println(i)
}
}()
wg.Wait()
}
Run
Here, I create a `WaitGroup` called `wg` and add 3 to it, knowing that I will
be calling 3 coroutines. At the end of each coroutines I'd send a signal to
`wg` to mark an end of a coroutine. Lastly I would call `Wait` on the WG and
it'll make the program wait for all those coroutines to finish.
