시그마 삽질==six 시그마

일급객체(Wikipedia) In programming language design, a first-class citizen (also type, object, entity, or value) in a given programming language is an entity which supports all the operations generally available to other entities. These operations typically include being passed as an argument, returned from a function, modified, and assigned to a variable 일급함수(Wikipedia) In computer science, a progra..