NDArrayBackedExtensionIndex
===========================

.. cpp:class:: numpy::NDArrayBackedExtensionIndex

   numpy C++ class.

Example
-------

.. code-block:: cpp

   #include <numpy/np_ndarray.h>
   using namespace numpy;

   // Use NDArrayBackedExtensionIndex
   NDArrayBackedExtensionIndex obj;
   // ... operations ...

Constructors
------------

.. list-table::
   :widths: 55 25 20
   :header-rows: 1

   * - Signature
     - Location
     - Example
   * - ``explicit NDArrayBackedExtensionIndex(const ArrayType& array, const std::optional<std::string>& name = std::nullopt, bool copy = false)``
     - df_ndarray_backed_extension_index.h:139
     - 
   * - ``explicit NDArrayBackedExtensionIndex(ArrayType&& array, const std::optional<std::string>& name = std::nullopt)``
     - df_ndarray_backed_extension_index.h:149
     - 
   * - ``NDArrayBackedExtensionIndex(const NDArrayBackedExtensionIndex& other)``
     - df_ndarray_backed_extension_index.h:158
     - 
   * - ``NDArrayBackedExtensionIndex(NDArrayBackedExtensionIndex&& other) noexcept``
     - df_ndarray_backed_extension_index.h:166
     - 

Indexing / Selection
--------------------

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``std::string get_value_str(size_t index) const override``
     - std::string
     - df_ndarray_backed_extension_index.h:667
     - 

I/O
---

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``std::string to_string() const override``
     - std::string
     - df_ndarray_backed_extension_index.h:611
     - :ref:`View <example-ndarraybackedextensionindex-to_string-0>`

Type Handling
-------------

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``NDArrayBackedExtensionIndex copy() const``
     - NDArrayBackedExtensionIndex
     - df_ndarray_backed_extension_index.h:712
     - :ref:`View <example-ndarraybackedextensionindex-copy-1>`

Type Checking
-------------

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``bool is_all_dates() const``
     - bool
     - df_ndarray_backed_extension_index.h:486
     - 

Other Methods
-------------

.. list-table::
   :widths: 40 20 15 25
   :header-rows: 1

   * - Signature
     - Return Type
     - Location
     - Example
   * - ``DatetimeArray arr(data, mask)``
     - DatetimeArray
     - df_ndarray_backed_extension_index.h:276
     - :ref:`View <example-ndarraybackedextensionindex-arr-2>`
   * - ``TimedeltaArray arr(data, mask)``
     - TimedeltaArray
     - df_ndarray_backed_extension_index.h:293
     - :ref:`View <example-ndarraybackedextensionindex-arr-3>`
   * - ``DatetimeArray arr(data, mask)``
     - DatetimeArray
     - df_ndarray_backed_extension_index.h:346
     - :ref:`View <example-ndarraybackedextensionindex-arr-4>`
   * - ``TimedeltaArray arr(data, mask)``
     - TimedeltaArray
     - df_ndarray_backed_extension_index.h:362
     - :ref:`View <example-ndarraybackedextensionindex-arr-5>`
   * - ``PeriodArray arr(data, mask, "D")``
     - PeriodArray
     - df_ndarray_backed_extension_index.h:376
     - :ref:`View <example-ndarraybackedextensionindex-arr-6>`
   * - ``PeriodArray arr(data, mask, freq)``
     - PeriodArray
     - df_ndarray_backed_extension_index.h:402
     - :ref:`View <example-ndarraybackedextensionindex-arr-7>`
   * - ``size_t cache_memory_usage() const override``
     - size_t
     - df_ndarray_backed_extension_index.h:897
     - 
   * - ``\* Clears both the base class caches (from ExtensionIndex) and``
     - \* Clears both the base class
     - df_ndarray_backed_extension_index.h:875
     - 
   * - ``void clear_cache() const override``
     - void
     - df_ndarray_backed_extension_index.h:878
     - 
   * - ``std::unique_ptr<IndexBase> clone() const override``
     - std::unique_ptr<IndexBase>
     - df_ndarray_backed_extension_index.h:604
     - :ref:`View <example-ndarraybackedextensionindex-clone-8>`
   * - ``numpy::NDArray<numpy::datetime64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::datetime64>
     - df_ndarray_backed_extension_index.h:263
     - :ref:`View <example-ndarraybackedextensionindex-data-9>`
   * - ``numpy::NDArray<numpy::timedelta64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::timedelta64>
     - df_ndarray_backed_extension_index.h:281
     - :ref:`View <example-ndarraybackedextensionindex-data-10>`
   * - ``numpy::NDArray<numpy::int64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::int64>
     - df_ndarray_backed_extension_index.h:298
     - :ref:`View <example-ndarraybackedextensionindex-data-11>`
   * - ``numpy::NDArray<numpy::datetime64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::datetime64>
     - df_ndarray_backed_extension_index.h:334
     - :ref:`View <example-ndarraybackedextensionindex-data-12>`
   * - ``numpy::NDArray<numpy::timedelta64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::timedelta64>
     - df_ndarray_backed_extension_index.h:350
     - :ref:`View <example-ndarraybackedextensionindex-data-13>`
   * - ``numpy::NDArray<numpy::int64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::int64>
     - df_ndarray_backed_extension_index.h:366
     - :ref:`View <example-ndarraybackedextensionindex-data-14>`
   * - ``numpy::NDArray<numpy::int64> data(std::vector<size_t>``
     - numpy::NDArray<numpy::int64>
     - df_ndarray_backed_extension_index.h:393
     - :ref:`View <example-ndarraybackedextensionindex-data-15>`
   * - ``static std::string format_datetime(const numpy::datetime64& val)``
     - static std::string
     - df_ndarray_backed_extension_index.h:733
     - 
   * - ``std::string format_period(numpy::int64 ordinal) const``
     - std::string
     - df_ndarray_backed_extension_index.h:832
     - 
   * - ``static std::string format_timedelta(const numpy::timedelta64& val)``
     - static std::string
     - df_ndarray_backed_extension_index.h:793
     - 
   * - ``std::string freq_string() const``
     - std::string
     - df_ndarray_backed_extension_index.h:563
     - 
   * - ``bool has_cached_values() const override``
     - bool
     - df_ndarray_backed_extension_index.h:888
     - 
   * - ``std::string inferred_type() const override``
     - std::string
     - df_ndarray_backed_extension_index.h:590
     - 
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:264
     - :ref:`View <example-ndarraybackedextensionindex-mask-16>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:282
     - :ref:`View <example-ndarraybackedextensionindex-mask-17>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:299
     - :ref:`View <example-ndarraybackedextensionindex-mask-18>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:335
     - :ref:`View <example-ndarraybackedextensionindex-mask-19>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:351
     - :ref:`View <example-ndarraybackedextensionindex-mask-20>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:367
     - :ref:`View <example-ndarraybackedextensionindex-mask-21>`
   * - ``numpy::NDArray<numpy::bool\_> mask(std::vector<size_t>``
     - numpy::NDArray<numpy::bool\_>
     - df_ndarray_backed_extension_index.h:394
     - :ref:`View <example-ndarraybackedextensionindex-mask-22>`
   * - ``PeriodArray arr(data, mask, period_freq_to_string(current_arr.freq()))``
     - PeriodArray arr(data, mask,
     - df_ndarray_backed_extension_index.h:309
     - 
   * - ``NDArrayBackedExtensionIndex rename(const std::optional<std::string>& new_name) const``
     - NDArrayBackedExtensionIndex
     - df_ndarray_backed_extension_index.h:719
     - 
   * - ``std::string repr() const override``
     - std::string
     - df_ndarray_backed_extension_index.h:660
     - 
   * - ``std::string resolution() const``
     - std::string
     - df_ndarray_backed_extension_index.h:424
     - :ref:`View <example-ndarraybackedextensionindex-resolution-23>`
   * - ``NDArrayBackedExtensionIndex result(\*this)``
     - NDArrayBackedExtensionIndex
     - df_ndarray_backed_extension_index.h:720
     - :ref:`View <example-ndarraybackedextensionindex-result-24>`
   * - ``std::string unit() const``
     - std::string
     - df_ndarray_backed_extension_index.h:525
     - 
   * - ``static std::string unit_to_string(numpy::DateTimeUnit unit)``
     - static std::string
     - df_ndarray_backed_extension_index.h:540
     - 
   * - ``\* int64 values (nanoseconds since epoch, timedelta values, or period ordinals).``
     - \* int64
     - df_ndarray_backed_extension_index.h:214
     - :ref:`View <example-ndarraybackedextensionindex-values-25>`

Internal Methods
----------------

*6 internal methods (prefixed with underscore)*


Code Examples
-------------

The following examples are extracted from the test suite.

.. _example-ndarraybackedextensionindex-to_string-0:

.. dropdown:: to_string (np_test_1_all.cpp:454)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 444
      :emphasize-lines: 11

          // Modify through different views
          view1.setElementAt({0, 0}, 100);
          view2.setElementAt({2, 1}, 200);  // This is (1, 2) in original
          view3.setElementAt({0, 0}, 300);  // This is (1, 1) in original
      
          // std::cout << "After modifications through multiple views:" << std::endl;
          //original.printArray();
      
          // Verify all changes are reflected
          if (!(original.getElementAt({0, 0}) == 100)) {
              std::string description = std::string("testAdvancedViewLifecycle():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(original.getElementAt({0, 0}) == 100)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(original.getElementAt({1, 2}) == 200)) {
              std::string description = std::string("testAdvancedViewLifecycle():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(original.getElementAt({1, 2}) == 200)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(original.getElementAt({1, 1}) == 300)) {
              std::string description = std::string("testAdvancedViewLifecycle():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(original.getElementAt({1, 1}) == 300)";

.. _example-ndarraybackedextensionindex-copy-1:

.. dropdown:: copy (np_test_1_all.cpp:9812)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 9802
      :emphasize-lines: 11

          //original.printArray();
      
          // The modification should be at position (1,1) in original
          if (!(original.getElementAt({1, 1}) == 9999)) {
              std::string description = std::string("testSliceCopyVsViewMemoryOwnership():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(original.getElementAt({1, 1}) == 9999)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          // std::cout << "[OK] Slice view shares memory with original";
      
          // Test slice copy (should be independent)
          auto slice_copy = original.sliceArray({{2, 4}, {2, 4}});
          // std::cout << "Slice copy [2:4, 2:4]:";
          //slice_copy.printArray();
      
          slice_copy.setElementAt({0, 0}, 7777);
      
          // std::cout << "After modifying slice copy at (0,0):" << std::endl;
          // std::cout << "Original array:" << std::endl;
          //original.printArray();
          // std::cout << "Slice copy:" << std::endl;

.. _example-ndarraybackedextensionindex-arr-2:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-arr-3:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-arr-4:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-arr-5:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-arr-6:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-arr-7:

.. dropdown:: arr (np_test_1_all.cpp:1388)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 1378
      :emphasize-lines: 11

              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(*str_obj.get_as<std::string>() == "hello")) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(*str_obj.get_as<std::string>() == \"hello\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test NDArray construction
          NDArray<double> arr({2, 2}, 3.14);
          object_ arr_obj(arr);
          if (!(!arr_obj.is_null())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!arr_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(arr_obj.is_array())) {
              std::string description = std::string("testObjectConstruction():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(arr_obj.is_array())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-clone-8:

.. dropdown:: clone (np_test_1_all.cpp:24942)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 24932
      :emphasize-lines: 11

            }
      
            // Test reproducibility
            numpy::random::PCG64DXSM rng2(11111);
            if (rng2.next_uint64() != val) {
              std::cout << "  [FAIL] : in np_test_bitgen_pcg64dxsm() : not reproducible";
              throw std::runtime_error("np_test_bitgen_pcg64dxsm failed");
            }
      
            // Test clone
            auto cloned = rng.clone();
            if (cloned->name() != "PCG64DXSM") {
              std::cout << "  [FAIL] : in np_test_bitgen_pcg64dxsm() : clone name incorrect";
              throw std::runtime_error("np_test_bitgen_pcg64dxsm failed");
            }
      
            std::cout << " -> tests passed" << std::endl;
          }
      
          // ============================================================================
          // PHILOX TESTS

.. _example-ndarraybackedextensionindex-data-9:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-10:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-11:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-12:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-13:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-14:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-data-15:

.. dropdown:: data (np_test_1_all.cpp:2084)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 2074
      :emphasize-lines: 11

          }
          if (!(derived_ptr->extra == 2)) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(derived_ptr->extra == 2)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
      
          // Test 6: Large object handling
          struct LargeObject {
              std::vector<double> data;
              LargeObject() : data(10000, 3.14159) {}  // Large object
          };
      
          LargeObject large;
          object_ large_obj(large);  // Should handle large objects
          if (!(!large_obj.is_null())) {
              std::string description = std::string("testObjectHolderEdgeCases():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(!large_obj.is_null())";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(large_obj.is_type<LargeObject>())) {

.. _example-ndarraybackedextensionindex-mask-16:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-17:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-18:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-19:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-20:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-21:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-mask-22:

.. dropdown:: mask (np_test_1_all.cpp:27691)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 27681
      :emphasize-lines: 11

          void test_mask_rows_cols() {
            std::cout << "========= ma::mask_rows() and ma::mask_cols(): mask operations ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0} });
            auto mask = numpy::array({ {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);
      
            auto result_rows = numpy::ma::mask_rows(ma);
            auto result_cols = numpy::ma::mask_cols(ma);
      
            // std::cout << "  ma::mask_rows(): row 0 fully masked: " << (result_rows.mask().getElementAt({ 0, 0 }) ? "true" : "false") << std::endl;
            // std::cout << "  ma::mask_cols(): column 1 fully masked: " << (result_cols.mask().getElementAt({ 1, 1 }) ? "true" : "false");
            std::cout << " -> tests passed";
          }
      
          void test_compress_rowcols() {
            std::cout << "========= ma::compress_rowcols(): remove masked rows/columns ===";
      
            auto data = numpy::array({ {1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}, {7.0, 8.0, 9.0} });
            auto mask = numpy::array({ {false, false, false}, {false, true, false}, {false, false, false} });
            auto ma = numpy::ma::masked_array(data, mask);

.. _example-ndarraybackedextensionindex-resolution-23:

.. dropdown:: resolution (np_test_5_all.cpp:21200)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 21190
      :emphasize-lines: 11

                  std::cout << "[FAIL] np_test_timedelta_constructors: Timedelta(30, 's') expected 30 seconds, got "
                            << td_sec.total_seconds() << std::endl;
                  errors++;
              }
      
              numpy::Timedelta td_ms(500, "ms");  // 500 milliseconds
              std::cout << "  Timedelta(500, 'ms') = " << td_ms.value() << " nanoseconds" << std::endl;
              int64_t expected_ms = 500 * numpy::Timedelta::NANOS_PER_MILLISECOND;
              if (td_ms.value() != expected_ms) {
                  std::cout << "[FAIL] np_test_timedelta_constructors: Timedelta(500, 'ms') expected "
                            << expected_ms << " ns, got " << td_ms.value() << std::endl;
                  errors++;
              }
      
              numpy::Timedelta td_us(1000, "us");  // 1000 microseconds
              std::cout << "  Timedelta(1000, 'us') = " << td_us.value() << " nanoseconds" << std::endl;
              int64_t expected_us = 1000 * numpy::Timedelta::NANOS_PER_MICROSECOND;
              if (td_us.value() != expected_us) {
                  std::cout << "[FAIL] np_test_timedelta_constructors: Timedelta(1000, 'us') expected "
                            << expected_us << " ns, got " << td_us.value() << std::endl;
                  errors++;

.. _example-ndarraybackedextensionindex-result-24:

.. dropdown:: result (np_test_1_all.cpp:6090)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 6080
      :emphasize-lines: 11

              throw std::runtime_error(description);
          }
          // std::cout << "Timer restart test passed. Second: " << second_elapsed << " ms" << std::endl;
      
          std::cout << " -> tests passed" << std::endl;
      }
      
      void test_benchmark_result_storageBenchmarkSorting() {
          std::cout << "========= test_benchmark_result_storage =======================";
      
          BenchmarkResult result("TestAlgorithm", 1000, 15.5, true, 4096);
      
          if (!(result.algorithm_name == "TestAlgorithm")) {
              std::string description = std::string("test_benchmark_result_storageBenchmarkSorting():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(result.algorithm_name == \"TestAlgorithm\")";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);
          }
          if (!(result.array_size == 1000)) {
              std::string description = std::string("test_benchmark_result_storageBenchmarkSorting():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(result.array_size == 1000)";
              std::cout << std::string("[FAIL] ") + description << std::endl;
              throw std::runtime_error(description);

.. _example-ndarraybackedextensionindex-values-25:

.. dropdown:: values (np_test_1_all.cpp:15133)
   :class-title: example-dropdown

   .. code-block:: cpp
      :linenos:
      :lineno-start: 15123
      :emphasize-lines: 11

              std::cout << " -> tests passed" << std::endl;
            }
            else {
              std::cout << "[FAIL] Where function failed" << std::endl;
              errors++;
            }
      
            // Test 8: Clip function
            std::cout << "========= test_clip_function =======================" ;
      
            numpy::NDArray<double> values({ 5 });
            values.setElementAt({ 0 }, -2.0);
            values.setElementAt({ 1 }, -1.0);
            values.setElementAt({ 2 }, 0.5);
            values.setElementAt({ 3 }, 2.0);
            values.setElementAt({ 4 }, 5.0);
            double min_val = -1.0;
            double max_val = 3.0;
      
            auto clip_result = numpy::clip(values, min_val, max_val);