Feature request: Implement equivalent for std::type_identity<T> in <etl/type_traits.h>

[tigran2008]

std::type_identity was added in C++20 as a way to escape type deduction in templated arguments. https://en.cppreference.com/w/cpp/types/type_identity

Manually implementing it like this seems to work, and although it's just a few lines, it'd be nice if it was built-in.

template <typename T>
struct type_identity { typedef T type; };

#if ETL_USING_CPP11
  template <typename T>
  using type_identity_t = typename type_identity<T>::type;
#endif

[jwellbelove]

Do you want to do a Pull Request?

[tigran2008]

Would I add it to etl/generators/type_traits_generator.h?

[jwellbelove]

Yes, and then run the generator script generate_type_traits.bat

[tigran2008]

Alright, cool! I'm installing cogapp right now that's why it's taking some time. 😅

[tigran2008]

There we go: #905