> On 01 Dec 2015, at 12:45, Stephan Eggermont <[email protected]> wrote: > > 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.
I hate the error, a lot ;-) > It shows the need for #sum:ifEmpty: though Yes, as long as #() sum == 0 I want the simplest case to be simple, having a non-0 default is a special case IMHO > Stephan > > >
