TMP: how to write template code which converts any struct into a tuple?

Question

Is it possible to use template meta-programming to convert any struct or class into a tuple?

For instance:

struct Foo
{
  char         c;
  int               


        

Answer 1

I don't think that there's a way to do this in C++.

I don't know a way to enumerate the fields/types in a struct - if you could do that, I would think that constructing such a tuple would be fairly straightforward.

I believe that Boost.Fusion has a macro that helps with this called FUSION_ADAPT_STRUCT, but that's all manual.

The technical term for this is "reflection", and you can find lots of information about it by searching for "C++ reflection".

Here's one such article: How can I add reflection to a C++ application?