Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - https://web.archive.org/web/20160709014829/https://developer.apple.com/cn/
print("Hello, WWDC!").
learnAbout(OSX, iOS, watchOS, tvOS).
let sessions = 100.
let appleEngineers = 1000.
let labs = handsOn.
let scholarships = available.
let date = "June 13–17".
let location = sanFrancisco.
let WWDC16= gameChanging.
learnMore()