Can't print enum values

[Andrey]

On Thursday, 30 August 2018 at 12:04:26 UTC, vit wrote:
> On Thursday, 30 August 2018 at 11:34:36 UTC, Andrey wrote:
>> On Thursday, 30 August 2018 at 11:09:40 UTC, vit wrote:
>>> [...]
>>
>> I want to create a reusable template for this purpose.
>> Why I can't use "staticMap" so that compiler it self would do 
>> this:
>>>[...]
>> Just wrap some some symbol "args" with some expression at 
>> compile time.
>>
>> It is the same as in C++:
>>>[...]
>
> D doesn't have expanding like C++
>
> Unfortunately D has only simple automatic expading.

So how can one implement a reusable template "apply some function 
to each argument in template parameter pack" in D?