Why std.algorithm.sort can't be applied to char[]?

[hane via Digitalmars-d-learn]

On Monday, 12 May 2014 at 14:56:46 UTC, John Colvin wrote:
> char[] is a rather special type of array: the language has 
> unicode support and iterates over it by code-point (i.e. not 
> guaranteed to be a single char per iteration).
>
> If you want to sort chars and are assuming ASCII, you can just 
> use std.string.representation to work with them as integer 
> types:

On Monday, 12 May 2014 at 16:30:12 UTC, Jonathan M Davis via 
Digitalmars-d-learn wrote:
> All strings in D are treated as ranges of dchar, not their 
> element type. This
> has to with the fact that a char or wchar are only part of a 
> character. If you
> want to sort arrays of characters, you need to use dchar[].

I understand the reason. Thanks!