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Front Page / Changelog & History / Changes in Boost 1.32.0 Release / Tag Dispatching Protocol

Tag Dispatching Protocol

The mechanism used to select algorithm implementations based on sequence family has been changed to use metafunction classes:

Before Now
name_traits<Tag>::algorithm<...>::type name_impl<Tag>::apply<...>::type

If your code implemented a custom sequence, it needs to be adjusted according to the above table; for example:

Before Now
template<> struct begin_traits<my_tag>
{
    template< typename S > struct algorithm
    {
        typedef ... type;
    };
};
template<> struct begin_impl<my_tag>
{
    template< typename S > struct apply
    {
        typedef ... type;
    };
};