Getting Started With ReactiveCocoa
ReactiveCocoa is a tool that programmers can use to make writing apps easier by removing state. However, even in a “completely reactive” app, you have to deal with non-ReactiveCocoa code. Things like table view delegate methods, for example. When you want to bridge the gulf between non-reactive and reactive worlds, use RACSubjects.
While subscriptions are useful and necessary for performing side-effects, be careful not to overuse them. They are like mutable variables – state – which ReactiveCocoa tries to avoid. Don’t use RACSubjects to manipulate application state where binding properties to mapped signals can work instead.
