시그마 삽질==six 시그마

Wikipedia에서 말하는 함수형 프로그래밍 정의 In computer science, functional programming is a programming paradigm—a style of building the structure and elements of computer programs—that treats computation as the evaluation of mathematical functions and avoids changing-state and mutable data. In functional code, the output value of a function depends only on its arguments, so calling a function with the same v..