Re: D alternative for C/C++ -Dfoo=42

[Tobias Pankrath]

module myproggy;
import std.stdio;
enum foo = 5;
enum bar = "walter";
int main() {
  writeln(bar);
  return foo;
}

... and you call compiler like:
  dmd myproggy.d -Dfoo=42 -Dbar=hello

smart, new D compiler would replace enums (iff they exist in 
the source code) with the given arguments, so when you run 
myproggy, you get "walter" as output, and the exit code is 42.

I don't like it. I would prefer a CTFE-able counter part to 
boost::program_options that generates thouse enums from a config 
file.