#include <iostream>
 
// c++14 has it http://e...content-available-to-author-only...e.com/w/cpp/utility/integer_sequence
namespace detail {
    template <int... Is> struct seq { };
    template <int N, int... Is> struct gen_seq : gen_seq<N - 1, N - 1, Is...> {  };
    template <int... Is> struct gen_seq<0, Is...> : seq<Is...> { };
}
 
constexpr size_t operator"" _len ( const char*, size_t len ){ return len; }
 
template < char... val > struct slit {};
 
#define EXPAND_STRING( type_name, str ) \
template <int... Is> slit< str[Is]...> make_##type_name( detail::seq<Is...> ); \
using type_name = decltype( make_##type_name( detail::gen_seq<str##_len>{} ) );
 
using Manual = slit< 'b', 'a', 'z'>; 
EXPAND_STRING( MyFoo, "foo bar baz");
EXPAND_STRING( MyBar, "bla bli blo blu");
 
inline std::ostream& operator<<( std::ostream& os, slit<> ) { return os; }
template < char first, char... chars >
std::ostream& operator<<( std::ostream& os, slit<first,chars...> ) {
    return os << first << " " << slit<chars...>{};
}
 
int main() {
    std::cout << Manual{} << "\n";
    std::cout << MyFoo{} << "\n";
    std::cout << MyBar{} << "\n";
}

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