Dependency injection (DI) is a technique for achieving loose coupling between objects and their collaborators, or dependencies. Rather than directly instantiating collaborators, or using static references, the objects a class needs in order to perform its actions are provided to the class in some fashion.
Overview (1). Nicky Cruz was leader of a brutal Puerto Rican New York gang called 'The Mau Maus' which ran wild in the mid to late 1950s, before he met the preacher 'David Wilkerson'.verview (1). Nicky Cruz was leader of a brutal Puerto Rican New York gang called 'The Mau Maus' which ran wild in the mid to late 1950s, before he met the preacher 'David Wilkerson'.
The Justice Department did just that. And in 1977, Nicky Barnes -- a former addict with a junior high school education who made a fortune flooding black neighborhoods with heroin and swaggered around as an invincible outlaw -- was sentenced to life in prison without parole.