{ "blurb": "Convert a binary number, represented as a string (e.g. '101010'), to its decimal equivalent using first principles", "authors": [ "canweriotnow" ], "files": { "solution": [ "binary.el" ], "test": [ "binary-test.el" ], "example": [ ".meta/example.el" ] }, "source": "All of Computer Science", "source_url": "http://www.wolframalpha.com/input/?i=binary&a=*C.binary-_*MathWorld-" }