A "general" tag

[Xan]

On Saturday, 14 April 2012 at 19:40:06 UTC, Aleksandar Ružičić 
wrote:
> On Saturday, 14 April 2012 at 19:17:52 UTC, Xan wrote:
>> Hi,
>>
>> I try to translate a script I wrote in Fantom 
>> [www.fantom.org]. In my script, I have a type "Tag" defined as 
>> a triple of:
>> - String (the name of the tag),
>> - Type (the type of the tag: could be Str, Date, Int, etc.)
>> - Obj (the value of the tag; Fantom has Objects of Top-Class 
>> hierachy).
>>
>> (normally the tag has Type = Obj.Type, but you can manually 
>> set).
>>
>> For example,
>> you could have:
>> (name, Str#, "John")
>>
>> or
>>
>> (date, Date#, 2011-09-02)
>>
>>
>> (# is the Fantom way for specifying type: Str# is the sys::Str 
>> type)
>>
>>
>> Is there any way for emulating this? My main trouble is how to 
>> define Type and Object in D.
>>
>> Thanks in advance,
>> Xan.
>>
>> PS: Please, be patient, I'm a newbee.
>
>
> For "Type" look at enum (http://dlang.org/enum.html) and for 
> "Object" look at std.variant 
> (http://dlang.org/phobos/std_variant.html).
>
> And since Variant can tell you what type it contains you might 
> no longer need that "Type" parameter.

I think it's not what I expect. Can I have a generic object type? 
Something like an assigment like:

Any a


?

With templates?

Please, guide me. I'm a newbee