CancellableTestPlayground #Swift #Combine

CancellableTestPlayground.swift

// Playground to showcase AnyCancellable instances are not automatically released upon completion if they're stored with the `store` function
import Combine

class LongLivedObject {
    private(set) var bag = Set<AnyCancellable>()
    
    func callCombineOperation() {
        [1,2,3].publisher.sink {
            print("completed: \($0)")
        } receiveValue: {
            print("value: \($0)")
        }
        .store(in: &bag)
    }
}

let o = LongLivedObject()

o.callCombineOperation()
o.bag.count

o.callCombineOperation()
o.bag.count

o.callCombineOperation()
o.bag.count