It is not clear what exactly you are trying to accomplish.
d = (b: 10, c: "cd")
This already creates a tuple and is not a sequence. How does the sequence you
talk about look? Since the tuple needs one `int` and one `string`, you would
not only need to map the sequence items to tuple fields, but also store `b` as
string (or `c` as int if feasible...), because a sequence cannot contain
different types.
What you want to do is probably possible with a simple generic proc and
[fields](http://forum.nim-lang.org///nim-lang.org/docs/system.html#fields.i,T)
or
[fieldPairs](http://forum.nim-lang.org///nim-lang.org/docs/system.html#fieldPairs.i,T).
However:
* The transformation would still be static and not dynamic, because you have
to give the tuple's type at compile time.
* Talking about _dynamically creating a tuple_ hints to a misunderstanding of
the purpose of the tuple within Nim's typing system. Transformation between a
tuple and a sequence would typically only make sense for data serialization and
should be avoided otherwise.
