Iterate over symbols in tupleof without instance

[monarch_dodra]

On Tuesday, 15 April 2014 at 08:18:31 UTC, Benjamin Thaut wrote:
> I would like to iterate over T.tupleof at compiletime without 
> having a instance of the given type.

*What* exactly are you trying to do? You could iterate over the 
tupleof *types* instead if you want? Would that work for you?

foreach(i, SubT; FieldTypeTuple!T)
{
     ...
}

You get your static loop, your indexes, and types. And if you 
need to operate on the subtypes, you can always use `SubT a = 
SubT.init;`

Also, as a general rule, it is "recommended" to not use tupleof 
directly, but rather:

T myData;
foreach(i, SubT; FieldTypeTuple!T)
{
     alias subData = myData.tupleof[i];
}

This is because FieldTypeTuple will strip the "context pointer 
field", which you generally don't care about.