Global waitgroup for goroutines

---

examples/global-wait-group/global_wait_group.go

package main

import (
    "fmt"
    "sync"
)

func count(n int, name string) {
    for i := 1; i <= n; i++ {
        fmt.Printf("%v %v\n", name, i)
    }
    wg.Done()

}

var wg sync.WaitGroup

func main() {
    fmt.Println("Start")

    wg.Add(1)

    go count(1000, "Apple")
    go count(5, "Banana")

    wg.Wait()
    fmt.Println("End")
}

Start
Banana 1
Banana 2
Banana 3
Banana 4
Banana 5
End