shuffle a character array

[pineapple via Digitalmars-d-learn]

On Wednesday, 20 July 2016 at 13:33:34 UTC, Mike Parker wrote:
> There is no auto-decoding going on here, as char[] and wchar[] 
> are rejected outright since they are not considered random 
> access ranges.

They are considered random access ranges by my ranges library, 
because they are treated as arrays of characters and not as 
unicode strings.