shuffle a character array

[pineapple via Digitalmars-d-learn]

On Wednesday, 20 July 2016 at 08:02:07 UTC, Mike Parker wrote:
> You can then go to the documentation for 
> std.range.primitives.isRandomAccessRange [2], where you'll find 
> the following:
>
> "Although char[] and wchar[] (as well as their qualified 
> versions including string and wstring) are arrays, 
> isRandomAccessRange yields false for them because they use 
> variable-length encodings (UTF-8 and UTF-16 respectively). 
> These types are bidirectional ranges only."

There's also the shuffle module in mach.range which doesn't do 
any auto-decoding: 
https://github.com/pineapplemachine/mach.d/blob/master/mach/range/random/shuffle.d