Andrew Dunstan <andrew@dunslane.net> wrote:
> Returning to the original point, I've come to the conclusion that
> "pure" isn't the right way to go. The trouble with "leakproof" is
> that it doesn't point to what it is that's not leaking, which is
> information rather than memory, as many might imagine (and I did)
> without further hints. I'm not sure any single English word would
> be as descriptive as I'd like.
Discreet?
http://www.merriam-webster.com/dictionary/discreet
I guess the risk is that people would confuse it with "discrete".
-Kevin