How to use objectWillChange in Combine

Issue #513

A publisher that emits before the object has changed

Use workaround DispatchQueue to wait another run loop to access newValue

.onReceive(store.objectWillChange, perform: {
    DispatchQueue.main.async {
        self.reload()
    }
})

func reload() {
    self.isFavorite = store.isFavorite(country: country)
}

Read more

• https://forums.swift.org/t/combine-observableobject-in-uikit/28433
• https://twitter.com/luka_bernardi/status/1155944329363349504