Method pass_valu

tests/test_class_sh_basic.cpp:22–22

    bool valid() const { return static_cast<bool>(held); }

    void pass_valu(std::unique_ptr<atyp> obj) { held = std::move(obj); }
    void pass_rref(std::unique_ptr<atyp> &&obj) { held = std::move(obj); }
    std::unique_ptr<atyp> rtrn_valu() { return std::move(held); }
    std::unique_ptr<atyp> &rtrn_lref() { return held; }