[boost] [mpl] Possible documentation bug

From: Brad Austin (artax_at_[hidden])
Date: 2005-01-26 20:51:02

The MPL Reference Manual page for at_c:

    http://www.boost.org/libs/mpl/doc/refmanual/at-c.html

Contains the following sample code:

    typedef range_c<long,10,50> range;
    BOOST_MPL_ASSERT_RELATION( (at_c< range,0 >::value), ==, 10 );
    BOOST_MPL_ASSERT_RELATION( (at_c< range,10 >::value), ==, 20 );
    BOOST_MPL_ASSERT_RELATION( (at_c< range,40 >::value), ==, 50 );

Does at_c<unspecified>::value exist?  I get a compilation error:

    error: `value' is not a member of type `boost::mpl::at_c<range, 0>   '