Expression tuples

Steven Schveighoffer schveiguy at yahoo.com
Wed Mar 16 14:43:20 PDT 2011


On Wed, 16 Mar 2011 17:31:06 -0400, Simen kjaeraas  
<simen.kjaras at gmail.com> wrote:

> On Wed, 16 Mar 2011 21:51:37 +0100, Steven Schveighoffer  
> <schveiguy at yahoo.com> wrote:
>
>> On Wed, 16 Mar 2011 16:28:48 -0400, Simen kjaeraas  
>> <simen.kjaras at gmail.com> wrote:
>>
>>> On Wed, 16 Mar 2011 21:07:08 +0100, simendsjo  
>>> <simen.endsjo at pandavre.com> wrote:
>>>
>>>> http://www.digitalmars.com/d/2.0/tuple.html
>
>> If you read that page he is referring to, it seems like you should be  
>> able to create an expression tuple.
>>
>> I don't know if that works with std.typecons.tuple.
>>
>> In fact, I don't think I've ever seen some of the stuff that's in that  
>> page, especially the mixed type+expression tuple.  Is it valid?
>
> Oh, absolutely. Given that you use the Tuple template declared at the top
> of the page. However, I would recommend the page be rewritten so as not
> to cause confusion between that and std.typecons.Tuple.
>

As I was confused there and thought we were talking about  
std.typecons.Tuple, I wholeheartedly agree :)

Now I am concerned, this looks like an oxymoron:

TypeTuple!(1, 2, 3)

Should we think about changing the name of std.typetuple.TypeTuple since  
it can clearly contain expressions as well as types?  I would actually  
argue that TypeTuple should be called Tuple, and Tuple be called  
ValueTuple or something, but I understand we probably cannot do that at  
this point...

-Steve


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