On 01-12-15 11:46, Sven Van Caekenberghe wrote:
The basic question for me is, what should#() sum return. Right now, it is an error, I would very much like that for this common case the result would be 0. There is a lot of power (easy of use) in a unary selector, we should not destroy that with semantics that force a test before using it.
I like the error, it aligns with most of our collection protocol. It shows the need for #sum:ifEmpty: though Stephan
