VCqDGiuN.go

package main

import (
	"fmt"
	"sortedlist/coarselist"
	"sync"
)

func main() {
	l := coarselist.New()
	var wg sync.WaitGroup
	for i := 0; i < 200; i++ {
		wg.Add(1)
		go func(it int) {
			item := []byte(string(it))
			l.Add(item)
			wg.Done()
		}(i)
	}
	wg.Wait()

	fmt.Println(l.Size()) // 1st run: 200, 2nd run: 200, 3rd run: 200...
}