Question about version ( ) keyword

[Adam D. Ruppe via Digitalmars-d]

On Monday, 21 March 2016 at 14:51:48 UTC, Vincent R wrote:
> However I understand that this limitation allow a clear 
> separation between different platforms...

That's exactly why it is done this way, so the platforms are 
clearly separated from each other and always grouped together for 
themselves.

When writing these, we try to copy/paste it from the specific 
platform's documentation as a whole block so it is there and 
correct without accidentally assuming a Linux function is the 
same as a FreeBSD function (for example) just because a few of 
them were and got grouped in an OR block, but the rest weren't 
and got overlooked. Doing it separately makes sure we look each 
thing up for the specific platform to get it right.

(Version does not support an or thing itself to force this, but 
still if you really wanted to, you can static if or set shared 
version identifiers, so it is possible, just the language and 
library guidelines don't want you doing it that way.)