From certain point of view, it has. When I started learning programming in mid 2000, closest thing I would use is anonymous implementations of runable in Java?

From certain point of view, it has. When I started learning programming in mid 2000, closest thing I would use is anonymous implementations of runable in Java? These days, I don't think there is a main-stream language in use, that wouldn't have functions as values, anonymous function declarations, closure scoped variables and at least the standard battery of higher order function utilities, like map, fold/reduce, filter, e.t.c. Closest comes Go language, with its "just use for-loop attitude".