Why for loop in a G take no effect on i++？

Getting Help
#1 
package main

import (
	"fmt"
	"time"
)

func main() {
	var x int
	go func() {
		for {
			x++
		}
	}()
	time.Sleep(time.Second)
	fmt.Println("x =", x) // x = 0, why?
}

thanks :slight_smile:

#2

Because your goroutine never had the opportunity to run. main exits before the scheduler schedules it. You need some sort of synchronization like a channel or sync.WaitGroup

#3

Shouldn’t time.Sleep() give other go routines the opportunity to run?

#4

I found some explanation here

If it is just for counting you can use atomic counters

#5

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.