sorting a string

[ag0aep6g via Digitalmars-d-learn]

On 07/15/2017 04:33 AM, Namal wrote:
> Why does it have to be char[]?
> 
>   auto bytes = line.representation.dup;
>   bytes.sort;
>   string result = bytes.assumeUTF;
> 
> works too.

That's a compiler bug. The code should not compile, because now you can 
mutate `result`'s elements through `bytes`. But `result`'s elements are 
supposed to be immutable.

I've filed an issue: https://issues.dlang.org/show_bug.cgi?id=17654