package main

import (

	//"fmt"

	"time"

)

func test () {

	var m map[string]int

	m["abcd"] = 1234

}

func main () {

	for i := 0; i < 100; i++ {

		go test()

	}

	time.Sleep(10 * time.Second)

}

//recover来捕获异常

package main

import (

	"fmt"

	"time"

)

func test () {

	//使用recover来捕获异常

	defer func () {

		if err := recover(); err != nil {

			fmt.Println("panic", err)

		}

	}()

	var m map[string]int

	m["abcd"] = 1234

}

func main () {

	for i := 0; i < 100; i++ {

		go test()

	}

	time.Sleep(10 * time.Second)

}