A technique in which an object's dependencies are supplied to it from outside rather than being constructed by the object itself, making code easier to test and to reconfigure since a dependency can be swapped without changing the dependent class.
Facts
Core PrincipleAn object or function receives the other objects or functions it requires rather than creating them internally. 1 Connections
In Field
Invented
Martin Fowler coined and formalized the term dependency injection in his widely cited 2004 article distinguishing it from the broader inversion-of-control principle.
Sources
1. Dependency injection - Wikipedia
Lead paragraphQuote, Lead paragraph
Dependency injection is a programming technique in which an object or function receives other objects or functions that it requires, as opposed to creating them internally.
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