DI has none run-time overhead (See Performance)
Notice that ORDER in which above dependencies are created is IMPORTANT as well as thatĪNY change in ANY of the objects constructor will REQUIRE a change in this code! Manual DI - Wiring Mess (Avoid it by using. No Dependency injection | Dependency Injection DI enables loosely coupled designs, which are easier to maintain and test. It is like the Strategy Pattern, except the strategy is set once, at construction. "Don't call us, we'll call you", Hollywood principleĭependency Injection (DI) involves passing (injecting) one or more dependencies (or services) to a dependent object (or client) which become part of the client’s state.
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