Compare MVVM with unidirectional flow (TCA, Redux)
WHAT IT TESTS: architectural trade-off judgment. OUTLINE: MVVM is lightweight with bidirectional binding and per-screen view models; unidirectional flow centralizes a single state mutated only by reducers via actions, gaining predictability and testability at…
WHAT IT TESTS: whether you can reason about state predictability versus complexity at scale. ANSWER OUTLINE: MVVM pairs each view with a view model exposing bindable state, simple but with diffuse, mutable state and bidirectional bindings that can obscure who changed what; unidirectional architectures like TCA or Redux funnel all changes through actions and pure reducers into a single source of truth, making state transitions explicit, debuggable, and highly testable, but adding boilerplate and a learning curve.
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- #ios
- #architecture
- #mvvm
- #tca
- #redux
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