Re: D seems interesting, but...

[bearophile]

Andrei Alexandrescu:

Well there's a tension here: good language design generally 
aims at providing few general features applicable to many use 
cases. Encoding particular use cases in the language is 
warranted by either disproportionate frequency in use or 
disproportionate difficulty in implementing them within the 
language. I don't think this particular feature scores very 
highly in either category.

It's a feature that I use about in every Python module/package 
I've written, and it's about as equally used in code you see in 
Python repositories. So it's a common need in Python. I'm asking 
for it for more than three years or so.

And regarding the implementation my "hack" means having a single 
compile-time constant (plus a switch to be used when you want 
partial compilation?). Better designs are possible, but it's a 
matter of how much you want to work for it.

Bye,
bearophile