how to get the \uxxxx unicode code from a char

[Sean Kelly via Digitalmars-d-learn]

On Tuesday, 14 October 2014 at 20:08:03 UTC, Brad Anderson wrote:
> On Tuesday, 14 October 2014 at 20:05:07 UTC, Brad Anderson 
> wrote:
>> https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579
>
> Oops. Linked the the parser section. I actually don't see any 
> unicode escape encoder in here. Perhaps he meant the upcoming 
> JSON module.

Wow... the current std.json doesn't do string encoding?  I knew
it was bad, but...

In any case, yes, I mentioned JSON because strings are supposed
to be encoded exactly the way you're asking.  It was easier to
point at that than try to outline the process explicitly.