Lustig: ich konnte mich an diese Erklärung seit vielen Jahren erinnern, ohne zu wissen wo ich das gelesen hatte:
Quote:
Consider the sausage machine. You put a lump of meat in at one end, turn a handle, and out comes a sausage at the other end. A lump of pork gives a pork sausage, a lump of fish gives a fish sausage, and a load of beef a beef sausage.
Functions are practically indistinguishable from sausage machines but there is a difference: they work on numbers and strings instead of meat. You supply one value (called the argument), mince it up by doing some calculations on it, and eventually get another value, the result.
