Why version() ?

[Don]

Derek Parnell wrote:
> On Tue, 10 Feb 2009 13:08:03 +0100, Don wrote:
> 
>> A&&B is not so terrible, since you can do it by nesting, as above.
>> The big problem is A || B. It creates a mess.
> 
> version(A) version = AorB;
> version(B) version = AorB;
> version(AorB) {
>   . . .
> }
> 
Yes. And that sucks, because you've got the version statement in two 
places. And you've had to create an essentially meaningless temporary. 
[1] Then when you have a more complex expression, especially where A and 
B appear more than once, it gets disgusting.


[1] I know Walter's idea is that you create meaningful identifiers, but 
in practice this kind of versioning can be a workaround. EG B is 
"everything except WindowsME".