Sams Teach Yourself Ruby in 21 Days

Day 5. The Characteristics of Objects

“Certainly not,” said Socrates, “visible things like these are such as they appear to us, and I am afraid that there would be an absurdity in assuming any idea of them, although I sometimes get disturbed, and begin to think that there is nothing without an idea; but then again, when I have taken up this position, I run away, because I am afraid that I may fall into a bottomless pit of nonsense, and perish… ”

—Plato, Parmenides (ca. 370 B.C.E.)

Now that we've accumulated enough necessary skills, we can get back to objects and classes, clarify the difference between them, and learn how to make individual objects unique and interesting without having to write singleton methods. Along the way we'll learn more ...