CombineExamples
WIP
π· 𧱠𧰠π οΈ
Getting started with Combine
A collection of simple examples using Apple Combine reactive framework
Built with β€οΈ by
Pawel Krawiec
Examples
LOGIN SCREEN
Simple user login validation
let credentials = Publishers
.CombineLatest($username, $password) { ($0, $1) }
.share()
credentials
.map { uname, pass in
uname.count >= 4 && pass.count >= 4
}
.prepend(false) // initial state
.assign(to: \.isEnabled, on: loginButton)
.cancelled(by: cancellableBag)
// More in the example...
TIMER
Simplified stopwatch
Timer.publish(every: 0.1, on: .main, in: .default)
.autoconnect()
.scan(0, { (acc, _ ) in return acc + 1 })
.map { $0.timeInterval }
.replaceError(with: "")
.eraseToAnyPublisher()
.assign(to: \.currentTime, on: self)
.cancelled(by: cancellableBag)
// More in the example...
SEARCH
Browsing GitHub repositories
$query
.throttle(for: 0.5,
scheduler: .main,
latest: true)
.removeDuplicates()
.map { query in
return API().search(with: query)
.retry(3)
.eraseToAnyPublisher()
}
// More in the example...
AVAILABILITY
Check if your repository name is already taken
$text
.throttle(for: 0.5, scheduler: .main, latest: true)
.map { text in
API().search(with: text)
.map { isAvailable in
isAvailable ? "Name available" : "Name already taken"
}
.prepend("Checking...")
}
.switchToLatest()
// More in the example...Stay tuned. More examples coming.
Licence
MIT.
The Apple logo and the Combine framework are property of Apple Inc.