So from what I've found searching the newsgroup and my own experimentation, the best way to accomplish compile time printing is to do something like this:

string ctMain()
{
   //evaluate and return the final result string
}

enum result = ctMain();
pragma(msg, result);

I'm not a fan of having to build a single string and print it all at once. I know it's not that bad but it just means I have to pass around an Appender!string to all my logic functions that print results instead of having a central function they can call. I know a ctwriteln never really caught on, and pragma(msg, ...) has some limitations in that it can't use "local" variables even in CTFE. Are there any alternatives I'm overlooking?

Blake Anderton:

> I know a ctwriteln never really caught on,

There is an open pull request about it. And I think we'll have it in D. A problem is, that "ctwriteln" too adds a newline... :-(

Bye,
bearophile