NA_t

class pandas::NA_t

Utility class for pandas operations.

Example

#include <pandas/pandas.h>
using namespace pandas;

// Use NA_t
NA_t obj;
// ... operations ...

Conversion

Signature	Return Type	Location	Example
explicit constexpr operator bool() const noexcept	explicit constexpr operator	pd_na.h:49	View

Other Methods

Signature	Return Type	Location	Example
std::string repr() const	constexpr bool operator>=(const T&) const noexcept { return false; } std::string	pd_na.h:46	View

Code Examples

The following examples are extracted from the test suite.

bool (pd_test_3_all.cpp:1568)

    }

    std::cout << " -> tests passed" << std::endl;
}

// ============================================================================
// Category 9: NA Functions
// ============================================================================

void pd_test_3_all_na_functions() {
    std::cout << "========= NA_t.bool() and is_na<T> ===================";

    // Test NA_t bool conversion
    pandas::NA_t na_val;
    bool na_as_bool = static_cast<bool>(na_val);
    if (na_as_bool != false) {
        std::cout << "  [FAIL] : in pd_test_3_all_na_functions() : NA should convert to false" << std::endl;
        throw std::runtime_error("pd_test_3_all_na_functions failed: NA bool conversion");
    }

    // Test NA_t equality with itself

repr (pd_test_1_all.cpp:10906)

    std::cout << " -> tests passed" << std::endl;
}

void pd_test_extension_index_repr() {
    std::cout << "========= repr =========================";

    pandas::CategoricalArray arr({"a", "b", "c"});
    // Use ExtensionIndex<CategoricalArray> directly to test base class repr
    pandas::ExtensionIndex<pandas::CategoricalArray> idx(arr, "test");

    std::string repr_str = idx.repr();

    bool passed = (!repr_str.empty() && repr_str.find("ExtensionIndex") != std::string::npos);
    if (!passed) {
        std::cout << "  [FAIL] : in pd_test_extension_index_repr() : repr check failed" << std::endl;
        throw std::runtime_error("pd_test_extension_index_repr failed");
    }

    std::cout << " -> tests passed" << std::endl;
}