From: Yitzhak Sapir <ysapir@[...]..> 
>  The talk of inline functions gave me an idea. How about doing something
>  like this as a workaround:
[...]
>  This way it can remain one header with no extra defines based on whether
>  you want/don't want precompiled headers. Or is something wrong with
>  this code?

That's cool. ;-) But the separate header is something that had to be done -
people often express concerns about the placeholders having underscored
names.