What is the Advantage of sync.WaitGroup over Channels?

Question

I\'m working on a concurrent Go library, and I stumbled upon two distinct patterns of synchronization between goroutines whose results are similar:

Waitgroup

Answer 1

Also suggest to use waitgroup but still you want to do it with channel then below i mention a simple use of channel

package main

import (
    "fmt"
    "time"
)

func main() {
    c := make(chan string)
    words := []string{"foo", "bar", "baz"}

    go printWordrs(words, c)

    for j := range c {
        fmt.Println(j)
    }
}


func printWordrs(words []string, c chan string) {
    defer close(c)
    for _, word := range words {
        time.Sleep(1 * time.Second)
        c <- word
    }   
}