Steven Ross wrote:
Is there a good way to issue a compile-time warning telling people that integer_sort or float_sort isn't being used, because they passed in an incompatible data type? I see static assertions, but what I need is an equivalent static warning, after which I use std::sort.
You can have a look here: http://www.boost.org/doc/libs/1_39_0/libs/serialization/doc/static_warning.h... [snip]
Also, I'm using a simple if to decided this: if(sizeof(Div_type) <= sizeof(size_t)) because enable_if appears to only work with classes.
enable_if does work for functions as well, that's for sure. E.g. template < typename Div_type > typename boost::enable_if_c< sizeof(Div_type) <= sizeof(size_t), void >::type foo( /*args*/ ) { // use optimized algorithm } template < typename Div_type > typename boost::disable_if_c< sizeof(Div_type) <= sizeof(size_t), void >::type foo( /*args*/ ) { // fallback to std::sort BOOST_STATIC_WARNING( sizeof(Div_type) <= sizeof(size_t) ); // BOOST_STATIC_WARNING( false ); won't work because the expression must depend on a template parameter } Or you might consider using tag dispatching to avoid having the condition duplicated in enable_if_c and disable_if_c. [snip] HTH, Regards, Gevorg