back with more issues

[random832 at fastmail.us]

On Mon, Aug 12, 2013, at 10:56, Rotwang wrote:
> No! A function should have *four* well-defined pieces: what are its 
> parameters, what does it do, what are its side-effects, what does it 
> return, and an almost fanatical devotion to the Pope [etc.]

To be fair, I can't think of what "what does it do" includes other than
the side-effects and the return.