// Starting a number of thread in Go and wating for them to complete.
// This example is intentionally identicaly to h3.rs which intends to
// so the same thing in rust.

// gtowell
//Dec 2023

package main

import (
	"fmt"
	"sync"
	"time"
)

func main() {
	var wg sync.WaitGroup 
	threads:= 10  // number of threads to start
	
	for rz:=0; rz<threads; rz++ {
		wg.Add(1)
		go func(times int, tid int) {
			// say the thread is done when the function completes
			// roughly same as java wrapping function in try..finally
			defer wg.Done()  
			for th:=0; th<times; th++ {
				fmt.Printf("hi number %v from thread %v\n", th, tid)
				time.Sleep(1 * time.Millisecond)
			}
		}(2, rz)
	}

	for i:=0; i<5; i++ {
		fmt.Printf("Hi number %v from the main Thread\n", i)
		time.Sleep(1 * time.Millisecond)
	}
	wg.Wait()
}