On Sep 13, 2016, at 12:35, Denis Kudriashov <dionisiydk@gmail.com> wrote:

2016-09-13 20:56 GMT+02:00 stepharo <stepharo@free.fr>:

I was thinking about the code in Pharo.

Probably most known and beautiful case is arithmetic operations. Look at #adaptToInteger:andSend: and friends.