Method operator()

tests/test_class_sh_basic.cpp:54–54

    }

    void operator()(atyp *p) const { std::default_delete<atyp>()(p); }
    void operator()(const atyp *p) const { std::default_delete<const atyp>()(p); }
};
static_assert(std::is_default_constructible<custom_deleter>::value, "");