c++variablesmembertypename

C++ typename of member variable

Is it possible to get typename of a member variable? For example:

struct C { int value ; };

typedef typeof(C::value) type; // something like that?
Solution

  • Not in C++03. C++0x introduces decltype:

    typedef decltype(C::value) type;

    Some compilers have a typeof extension, though:

    typedef typeof(C::value) type; // gcc

    If you're okay with Boost, they have a library for it:

    typedef BOOST_TYPEOF(C::value) type;