[Seqan-dev] Metafunction to discover type of pair members

[John Reid <j.reid@mail.cryst.bbk.ac.uk>]

An occurrence of a representative in an index is held as a pair as far 
as I can work out. I can't find anything in the docs that lets me 
discover the types of the members of the pair. I think they are both 
long unsigned ints but it would be nice to know at compile-time. Is 
there such a metafunction?

Thanks,
John.