Go review --slice coroutine unsafe

package main

import (
    "fmt"
    "sync"
)

//演示slice协程不安全

var numbers = make([]int,0)

func main() {
    var wg sync.WaitGroup

    for i:=0;i<1000 ;i++  {
        go func() {
            wg.Add(1)
            numbers=append(numbers,i)
            wg.Done()
        }()
    }

    wg.Wait()
    fmt.Println(len(numbers))
}

Output:

961