Hi,
I wanted to start using Combine and I wrote a class to load an API token and assign it to self once loaded.
Here is the class:
class API {
private var token: String?
func loadToken() {
tokenPublisher()
.replaceEmpty(with: nil)
.replaceError(with: nil)
.eraseToAnyPublisher() // Not needed really
.receive(on: DispatchQueue.main)
.assign(to: \.token, on: self)
.cancel()
}
private func tokenPublisher() -> AnyPublisher<String?, Never> {
return Just<String?>("someToken").eraseToAnyPublisher()
}
}
let api = API()
api.loadToken()
When I use this code in my app, I get an EXC_BREAKPOINT error at .assign(to: \.token, on: self).
When I use it in Xcode Playground, I get an EXC_BAD_INSTRUCTION error there.
When I use it in Playgrounds App on Mac, I get an There was an error running your playground... at the same location.
My code seems to compile fine, so I was wondering if this is Combine or my code. Removing the .eraseToAnyPublisher() does not make a difference. Uncommenting assign does.
Thanks in advance.