Example for url iteration

url.cr

# First step, get an array of URLs
my_url = ["http://foo.com?bar=1&har=2&lar=3"]
# 2nd step, for each url parameter, create a new url with additional data in each parameter (single "A")
my_new_url = ["http://foo.com?bar=1A&har=2&lar=3", "http://foo.com?bar=1&har=2A&lar=3", "http://foo.com?bar=1&har=2&lar=3A"]
# last step, repeat step one and two to achive adiitional changes (Additional "A")
my_new_new_url = ["http://foo.com?bar=1AA&har=2&lar=3", "http://foo.com?bar=1&har=2AA&lar=3", "http://foo.com?bar=1&har=2&lar=3AA"]