Can you do this in D?

[bearophile]

Wes:

> So basically there's no easy way to make a prettyprint like:
> foreach(field;__traits(allFields, myClass)) { str ~= field; }

I am saying that probably there is a way, using mixins.


> Assuming this is the same as #pragma (msg, "").

It's not the same. It's usable just like a writeln, but in CTFE 
too. pragma(msg) has a different behavour, and happens in a 
different compilation stage.


> I'm not sure what you mean. Do you mean I can go edit the open 
> source compiler and add in my own language feature? Or does the 
> ability to add a $/@ operator already exist?

I mean that D compiler writers don't need to introduce new syntax 
to add that feature. But I don't see lot of people asking for it.

Bye,
bearophile