rfl::visit error: cannot bind non-const lvalue reference of type ‘int&’ to an rvalue of type ‘int‘

[Urfoex]

/include/containers/Column.hpp:244:22: error: cannot bind non-const lvalue reference of type ‘int&’ to an rvalue of type ‘int’
  244 |     return rfl::visit(get, data_ptr_);
      |            ~~~~~~~~~~^~~~~~~~~~~~~~~~

https://github.com/getml/getml-community/blob/main/src/engine/include/containers/Column.hpp#L243

With std::visit it was possible to return lvalue references, e.g.:

  T &operator[](const T2 _i) {
    const auto get = [_i](auto &&_ptr) -> T & { return (*_ptr)[_i]; };
    return std::visit(get, data_ptr_);
  }

rfl::visit seems to not support that, as it is returning an rvalue via move:
e.g. https://github.com/getml/reflect-cpp/blob/main/include/rfl/Variant.hpp#L161

[liuzicheng1987]

Resolved.