is(ElementType!(char[2]) == dchar - why?

[Paul Backus]

On Tuesday, 11 December 2018 at 17:51:56 UTC, Denis Feklushkin 
wrote:
> import std.stdio;
> import std.range.primitives;
>
> void main()
> {
>     writeln(
>         typeid(ElementType!(char[2]))
>     );
>
>     static assert(is(ElementType!(char[2]) == dchar)); // why?
> }
>
> ?
>
> https://run.dlang.io/is/Q74yHm

This is a "feature" called auto decoding. It's explained here: 
https://tour.dlang.org/tour/en/gems/unicode

You can get around it by using .byChar or .byCodeUnit.