[Issue 1210] New: Special Token for Compiler and Version

[Frits van Bommel]

> Similar as the special tokens __FILE__, __LINE__,.. I would like to have a
> token telling me what compiler has been used and what version the compiler had.

Theoretically, you could use the constants defined in std.compiler.
In practice, they're typically out-of-date. (case in point: they're 
currently at version 1.002 for DMD 1.014 :( )
Also, it seems the version distributed with GDC wasn't modified to 
reflect that fact, it claims to be "Digital Mars D 1.002" (like DMD 
1.002 to 1.014, apparently)...

> This could than be included in the log of the application and may help tracking
> or finding problems.
> Maybe __COMPILER__? Resulting in e.g. "DMD 1.014"

If std.compiler was properly updated, you could use something like
---
import std.compiler;
import std.stdio;

void main() {
     writefln("%s %d.%03d",
         std.compiler.name,
         std.compiler.version_major,
         std.compiler.version_minor);
}
---
to get a string representation.