On Wednesday, 30 April 2014 at 01:49:01 UTC, Nick Sabalausky wrote: > On 4/29/2014 9:38 PM, Narrator wrote: >> >> fn map<'r, B>(self, f: |A|: 'r -> B) -> Map<'r, A, B, Self> >> > > That looks like line noise. Not if one is used to ML languages. Beauty is in the eyes of the beholder. :)