[fusion][docs] is_sequence *isnt* true for std::vector ?
Hi all. I've been looking thru the documentation at boost.org to try to understand Boost.Spirit. That documentation refers to Boost.Fusion, and at http://www.boost.org/doc/libs/1_45_0/libs/fusion/doc/html/fusion/support/is_... there's something I think needs clarification (at the very least), or is mistaken. The first line of the last paragraph of that page contains the following line:BOOST_MPL_ASSERT_NOT(( traits::is_sequence< std::vector<int> > )); I don't understand. How can a std::vector *not* be considered a sequence? Martin
AMDG On 2/12/2011 6:05 AM, Martin Elzen wrote:
I've been looking thru the documentation at boost.org to try to understand Boost.Spirit. That documentation refers to Boost.Fusion, and at http://www.boost.org/doc/libs/1_45_0/libs/fusion/doc/html/fusion/support/is_... there's something I think needs clarification (at the very least), or is mistaken. The first line of the last paragraph of that page contains the following line:BOOST_MPL_ASSERT_NOT(( traits::is_sequence< std::vector<int> > )); I don't understand. How can a std::vector *not* be considered a sequence?
std::vector is not a /Fusion/ sequence. A Fusion sequence is a generalization of a tuple. It's size must be fixed at compile time, which is not true for std::vector. In Christ, Steven Watanabe
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Martin Elzen -
Steven Watanabe