Cory Nelson writes:

I have a function like:

template<typename CharT> void foo() { std::basic_string<CharT> str;

...

if(str=="bar")

... }

I'd like to check at compile time if CharT is a char or wchar_t to specialize the string used to compare- MPL seems like the thing I would use for this but documentation on doing this seems scarce.

Probably because MPL is a slightly overpowerful tool for the job.

Could someone give me an example?

template <class CharT> charT const* bar() { return "bar"; } template <> wchar_t const* bar() { return L"bar"; } ... if (str==bar<CharT>()) ... HTH, -- Dave Abrahams Boost Consulting www.boost-consulting.com