Good examples of version() algebra in real code

[Steven Schveighoffer]

On 5/21/23 3:09 PM, Guillaume Piolat wrote:
> On Sunday, 21 May 2023 at 18:43:32 UTC, Dennis wrote:
>>
>> - have real problems with existing `version()` statements (besides 'it 
>> looks ugly')
>>
> 
> 
> No big problem, but sometimes you need to do:
> 
>      version(X86)
>          version = AnyX86;
>      version(X86_64)
>          version = AnyX86;
> 
> or
> 
>      version (OSX)
>          version = Darwin;
>      else version (iOS)
>          version = Darwin;
>      else version (TVOS)
>          version = Darwin;
>      else version (WatchOS)
>          version = Darwin;
> 
> or
> 
>      version (D_InlineAsm_X86)
>          version = UseX86Assembly;
>      version (D_InlineAsm_X86_64)
>          version = UseX86Assembly;
> 
> and those are the only case I remember being a tiny bit annoyed at 
> `version`. I wouldn't use the above library solution to save one import.
> 

One of the largest problems with this scheme is it needs to be repeated 
in every module that uses e.g. `version(Darwin)`.

-Steve