goroutine.go

package main

import (
	"fmt"
	"time"
)

func main() {
	errs := make(chan error, 3)
	go upload(errs)
	go upload(errs)
	go upload(errs)
	
	for	i:=0; i<3;i++ {
		err := <- errs
		if err != nil {
			fmt.Println(err)
		}
	}

	close(errs)
}

func upload(cerr chan<- error) {
	fmt.Println("entrou")
	time.Sleep(10)
	cerr <- fmt.Errorf("erro")
}