go - 如何在golang中实现随机 sleep

Question

我正在尝试实现随机时间 sleep (在 Golang 中)

r := rand.Intn(10)
time.Sleep(100 * time.Millisecond)  //working 
time.Sleep(r * time.Microsecond)    // Not working (mismatched types int and time.Duration)

Answer 1

将参数类型匹配到time.Sleep:

r := rand.Intn(10)
time.Sleep(time.Duration(r) * time.Microsecond)

这是因为 time.Duration 有 int64 作为其基础类型:

type Duration int64

文档:https://golang.org/pkg/time/#Duration