Cannot find 'CombineLatest' in scope

user_465446 0
Viewed 644

I'm following along with the WWDC 2019 'Combine in Practice' video and I get the following error

Cannot find 'CombineLatest' in scope

I did it in a playground made in Xcode 12

import SwiftUI
import Combine

class Stuff {
    @Published var password: String = ""
    @Published var passwordAgain: String = ""

    var validatedPassword: AnyPublisher<String?, Never> {
        // wtf? "Cannot find 'CombineLatest' in scope"
        return CombineLatest($password, $passwordAgain) { password, passwordAgain in
            guard password == passwordAgain, password.count > 8 else { return nil }
            return password
        }
        .map { $0 == "password1" ? nil : $0 }
        .eraseToAnyPublisher()
    }
}

Has the API changed since 2019? Because it seems that

CombineLatest($password, $passwordAgain) -> $password.combineLatest($passwordAgain)

Is this true? Can anyone find any formal documentation on if it's true and why?

combine swift
1 Answers

It's nested under enum Publishers, so you'd access it like this:

Publishers.CombineLatest($password, $passwordAgain)

Alternatively, you can use it as an operator, which is arguably a more common way:

$password.combineLatest($passwordAgain)
user_9681550
Related