goroutine报panic: assignment to entry in nil map

Question

我在另一个goroutine中会不断地将结果数据丢入resultQueue中，然后我另外起一个goroutine把这个resultQueue中的结果转换为一个map输出，请问一下为什么这个代码在调用的时候会报panic: assignment to entry in nil map

resultQueue := make(chan string)

var result map[string]string

go func(resultQueue chan string, result map[string]string) {

    for urlInfo := range resultQueue {

        ret := strings.Split(urlInfo, " ")

        result[ret[0]] = ret[1]

    }

}(resultQueue, result)

Answer 1

1.map得初始化才能使用；2.建议使用：for urlInfo,err := range resultQueue {//...}

Answer 2

result := make(map[string]string)