It is very natural to store your app’s state as a single struct, but it simply can blow up as soon as you add more and more fields to your state struct. We can use state composition to solve this issue. Let’s take a look at the example.
struct AppState {
var calendar: CalendarState
var trends: TrendsState
var settings: SettingState
}
We divide our state into three dedicated pieces and compose them into AppState.
Redux provides a single source of truth, which eliminates tons of bugs produced by multiple states across the app. Best practices. Normalization and composition keep our app state simple and maintainable.
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