Function test_bind_back

dlib/test/invoke.cpp:472–485

    }

    void test_bind_back()
    {
        // Pure function
        static_assert(dlib::bind_back(test_bind_func, 50)(3) == -47, "this should be constexpr");
        DLIB_TEST(dlib::bind_back(test_bind_func, 50)(3) == -47);

        // Member function
        static_assert(dlib::bind_back(&test_bind_func_class::minus, 50)(test_bind_func_class{3}) == -47, "this should be constexpr");
        DLIB_TEST(dlib::bind_back(&test_bind_func_class::minus, 50)(test_bind_func_class{3}) == -47);
        DLIB_TEST(dlib::bind_back(&test_bind_func_class::minus, 50)(std::make_shared<test_bind_func_class>(3)) == -47);

        // Lambda
        DLIB_TEST(dlib::bind_back([](int a, int b) {return a - b;}, 50)(3) == -47);
    }

    // ----------------------------------------------------------------------------------------