Hello,
I find the following argument-dependent accessor extremely useful.  I wonder
why the Standard did not provide it.  Rationale: using
std::ifstream::traits_type explicitly in user code is error prone: the
compiler cannot detect the error when the argument changes from a reference
to an fstream to a reference to a std::wifstream during redesign and the
std::fstream::traits_type used to interpret the input is left unchanged.
Chris
template<class P_T> static inline typename P_T::traits_type

use_traits(P_T const &) { return P_T::traits_type(); }


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