Mid From PDF SOLID Design Patterns & SOLID

How does DI relate to Inversion of Control (IoC)?

Short answer: Inversion of Control (IoC) is a broader principle where control over object creation and dependency resolution is transferred from the class itself to an external framework or container. Dependency Injection is a specific implementation of IoC, where the dependencies are injected into a class rather than the class creating them internally. So, DI is one way to achieve IoC. Single Responsibility Principle (SRP)

Real-world example (ShopNest)

Patterns in ShopNest should solve a real pain (swappable payments, test seams)—not be added for decoration.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
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