{ "authors": [ "DoggettCK" ], "contributors": [ "angelikatyborska", "Cohen-Carlisle", "devonestes", "neenjaw", "sotojuan" ], "files": { "solution": [ "lib/perfect_numbers.ex" ], "test": [ "test/perfect_numbers_test.exs" ], "example": [ ".meta/example.ex" ] }, "blurb": "Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for positive integers.", "source": "Taken from Chapter 2 of Functional Thinking by Neal Ford.", "source_url": "https://www.oreilly.com/library/view/functional-thinking/9781449365509/" }