Domain name regex

Question

Trying to extract the domain name out of URL. For example:

x <-\"https://stackoverflow.com/questions/ask\"

to: stackoverflow.com

Answer 1

Why not use parseURI from XML? It breaks a URL into its different elements.

x <- "http://stackoverflow.com/questions/ask"
library(XML)
parseURI(x)$server
# [1] "stackoverflow.com"