Hi, > On Dec 1, 2015, at 5:13 PM, Max Leske <maxle...@gmail.com> wrote: > > @Doru > You’re missing the point: #anyOne *fails* for empty collections.
I am not missing the point at all. I am saying that if you want sum: to be generic, it cannot assume a specific Zero object. And sum: should be generic because of its name. >> On 01 Dec 2015, at 15:31, Esteban A. Maringolo <emaring...@gmail.com> wrote: >> >> I don't want to be heretic (or too orthodox), but why not to delegate >> this behavior to other class (an iterator maybe?). >> >> It's too tempting adding these convenience methods to Collection >> and/or subclasses, but anything that requires an explicit protocol of >> its elements is wrong, IMO. >> >> something like aCollection arithmetic sum: [...] or.... aCollection >> arithmetic avg. > > > Interesting thought! +100 Doru >> >> My two cents for this. >> >> Regards! >> >> >> Esteban A. Maringolo >> > > -- www.tudorgirba.com "Every thing has its own flow."
