one sample of non blocking coroutine safe boolean access

main.go

package main

import (
	"fmt"
	"time"
)

func newT() T {
	t := make(T)

	go func() {
		var b bool
		for {
			select {
			case b = <-t:
			case t <- b:
			}
		}
	}()

	return t
}

type T chan bool

func (t T) Get() bool {
	return <-t
}
func (t T) Set(v bool) {
	t <- v
}

func main() {
	t := newT()
	t.Set(false)
	fmt.Println(t.Get())
	t.Set(true)
	fmt.Println(t.Get())
	time.Sleep(100 * time.Millisecond)
}