DIP 50 - AST macros

[Walter Bright]

On 11/13/2013 5:14 PM, deadalnix wrote:
> My very first project in D involved quite a lot of them. So I very aware of what
> they are.
>
> The whole idea is to be able to extends that to statement and declarations.

My question about that is just what problem is this trying to solve, and why 
that problem cannot be reformulated in terms of expression templates?

I.e. we shouldn't be adding things to D just because they are cool. They need to 
solve a problem that is fairly commonplace and too painful to solve with 
existing mechanisms. The larger the proposed language enhancement is, the more 
commonplace and and painful the problems must be that it purports to solve.


> Making what expression templates can do is simply a side effect so to speak.