CompositeDisposable-insert-dispose-example.swift

let disposable1 = Disposables.create { print("disposed-1 ☠️") }
let disposable2 = Disposables.create { print("disposed-2 ☠️") }
let disposable3 = Disposables.create { print("disposed-3 ☠️") }

let disposable = CompositeDisposable(disposable1, disposable2)

print("dispose")
disposable.dispose()

print("insert disposable3")
disposable.insert(disposable3) // It'll be disposed immediately, because we called `dispose` in the parent disposable above.

// log:
// dispose
// disposed-1 ☠️
// disposed-2 ☠️
// insert disposable3
// disposed-3 ☠️