C++ addition overload ambiguity

Question

I am coming up against a vexing conundrum in my code base. I can\'t quite tell why my code generates this error, but (for example) std::string does not.

cla         


        

Answer 1

Template and non-template functions follow different rules. The template functions are selected on the actual parameter types, without any conversions being applied. In the case of the non-template (i.e. your code) an implicit conversion can be applied. Thus the templated stuff in basic_string is not ambiguous, but yours is.