A taste of MVVM + RxSwift
summary
Argues that MVVM plus RxSwift observables shrinks huge view controllers by moving async work into a testable ViewModel split into Input/Output ViewModel interfaces. Shows concrete code: login flow that fetches Facebook friends plus another social source, uses Rx operators to combine the two network requests and subscribe to the merged result, and extracts layout into a reusable ProfileView bound from a generic view controller. Demonstrates the approach working and improving clarity and unit testability.
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