Re: [Boost-users] [fusion] .at<N>() template member in containers?

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 06 October 2010, alfC wrote:

Hi,

Excuse my simple minded questions. Sometimes by asking this question (often with negative answer) I understand more on the design of the Boost libraries.

Besides possible redundancy, why is that the fusion containers, for example fusion::vector, doesn't have a template member function to extract elements?

fusion::vector stuff(1.2, 3, "hola"); stuff.at<2>(); //returns "hola", just like at_c<2>(stuff);

Wouldn't that require template specializations of the "at()" member template for its differing return types? IIRC, C++ doesn't let you specialize template members of template classes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkys2mAACgkQ5vihyNWuA4Wd+wCff6IeuTbsJj0GVqPrqaGanKEG 9ogAoM/nwd7GCdR4IzYR2i5lBLhfyx1z =ojtF -----END PGP SIGNATURE-----