Make goroutine synchronized?

[u2386]

go-exercices/12-exercise-web-crawler.go

Line 53 in f28113e

<-childrenQuit

New gopher.
Is this block-channel makes goroutine synchronized?

Is this a better way?

children_quits := make(chan bool, len(urls))
for _, url := range urls {
	go RCrawl(url, depth-1, fetcher, children_quits)
}
for i := 0; i < len(urls); i++ {
	<-children_quits
}

[lsdsjy]

I think you are right. The original code is not concurrent. The for loop will not step until current RCrawl finishes, so there is only one goroutine running at any moment.