func (c *Crawled) IsCrawled(url string) bool {
	c.mux.Lock()
	defer c.mux.Unlock()
	return c.urls[url] > 0
}
// IsCrawled checks if a URL is crawled
IsCrawled checks if a URL is crawled
// IsCrawled checks if a URL is crawled
func (c *Crawled) IsCrawled(url string) bool {
	c.mux.Lock()
	defer c.mux.Unlock()
	return c.urls[url] > 0
}
func ( c * Crawled ) IsCrawled ( url string ) bool { c . mux . Lock ( ) defer c . mux . Unlock ( ) return c . urls [ url ] > 0 }
IsCrawled checks if a URL is crawled
IsCrawled checks if a URL is crawled