> For a given task, the imperative solution may leap immediately to mind or be found in a handy textbook, while a comparable functional solution may require con

> For a given task, the imperative solution may leap immediately to mind or be found in a handy textbook, while a comparable functional solution may require considerable effort to find FP means additional levels of indirection which makes it less efficient than imperative approaches. If FP really were more productive than imperative languages it would have been adopted by the industry long ago.