Re: Option!T

[JR]

On Tuesday, 10 December 2013 at 17:28:26 UTC, Andrei Alexandrescu 
wrote:
We have only(x) (http://dlang.org/phobos/std_range.html#.only) 
to be a collection of exactly one value, but not a type for "a 
value of type T or nothing at all".

Is this not what Nullable!T is?