Functional Sort

["Nordlöw" via Digitalmars-d-learn]

On Saturday, 15 November 2014 at 14:34:07 UTC, Nordlöw wrote:
> What's wrong with my isArray-overload of sorted?

I solved it by replacing

     R s = r.dup;

with

     auto s = r.dup;

As a follow up I know wonder if it is ok for isArray-overload of 
sorted() to have return type ubyte[] if input is a string?

I wonder because x.array.sort has type

     dchar[]

when x is a string.