Frédéric Bron wrote:
Don't use dependent default parameters for non-type template parameters. For example:
template <class T, int I = ::boost::is_integral<T>::value> // Error can't deduce value of I in some cases. struct foobar;
Rationale: this kind of usage fails for Borland C++. Note that this is only an issue where the default value is dependent upon a previous template parameter, for example the following is fine:
Is there any known workaround for this? In my case, int is replaced by bool but I think it is the same issue.
Hi, you could try to add an indirection. template <class T, bool B> struct foobar_aux; template <class T> struct foobar : foobar_aux<T, ::boost::is_integral<T>::value> {}; HTH, Vicente -- View this message in context: http://boost.2283326.n4.nabble.com/type-traits-extension-has-operator-xxx-co... Sent from the Boost - Dev mailing list archive at Nabble.com.