std::tuple
cppreference std::tuple
template< class... Types >
class tuple;
Implementation
gcc/libstdc++-v3
https://code.woboq.org/gcc/libstdc++-v3/include/std/tuple.html
实现原理
在 eli.thegreenplace Variadic templates in C++ 中,对tuple的实现原理进行了剖析。
Named tuple
http://vitiy.info/named-tuple-for-cplusplus/