Hello, World!

[Max Samukha]

On Wednesday, 30 March 2022 at 15:49:08 UTC, H. S. Teoh wrote:

>
> And pragma(msg) is technically not your program outputting the 
> message,
> but the compiler. You need to put it in main() for a proper
> implementation of Hello World. ;-)
>
>
> T

template add(int x)
{
     pragma(msg, x);
     int add(int y)
     {
         import std.stdio: writeln;
         writeln(y);
         return x + y;
     }
}

void main()
{
     auto z = add!1(2);
}

Is this a program that starts at compile time and continues at 
run time, or a meta-program that generates another program? )