goroutine

协程(goroutine) 是轻量级的执行线程

代码示例

package main

import (
  "fmt"
  "time"
)

func f(from string) {
  for i := 0; i < 3; i++ {
    fmt.Println(from, ":", i)
  }
}

func main() {
  f("direct")

  // 创建一个 goroutine
  go f("goroutine")

  // 创建一个匿名 goroutine
  go func(msg string) {
    fmt.Println(msg)
  }("going")

  time.Sleep(time.Second)
  fmt.Println("done")

// direct : 0
// direct : 1
// direct : 2
// going
// goroutine : 0
// goroutine : 1
// goroutine : 2
// done
}