ItemsRange

class pandas::ItemsRange

Iterator class for traversing pandas data structures.

Example

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

// Use ItemsRange
ItemsRange obj;
// ... operations ...

Iteration

Signature	Return Type	Location	Example
ItemsIterator begin() const	ItemsIterator	pd_dataframe.h:2107	View
ItemsIterator end() const	ItemsIterator	pd_dataframe.h:2111	View

Other Methods

Signature	Return Type	Location	Example
explicit ItemsRange(const DataFrame\* df) : df_(df)	explicit ItemsRange(const DataFrame* df) :	pd_dataframe.h:2105

Code Examples

The following examples are extracted from the test suite.

begin (pd_test_1_all.cpp:457)

        };
        pandas::CategoricalArray arr(values);

        const std::vector<std::string>& cats = arr.categories();
        if (cats.size() != 3) {
            std::cout << "  [FAIL] : in pd_test_categorical_array_categories_property() : categories size != 3" << std::endl;
            throw std::runtime_error("pd_test_categorical_array_categories_property failed: categories size != 3");
        }

        // Categories should be unique
        std::set<std::string> unique_cats(cats.begin(), cats.end());
        if (unique_cats.size() != cats.size()) {
            std::cout << "  [FAIL] : in pd_test_categorical_array_categories_property() : categories not unique" << std::endl;
            throw std::runtime_error("pd_test_categorical_array_categories_property failed: categories not unique");
        }

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

    void pd_test_categorical_array_codes_property() {
        std::cout << "========= CategoricalArray: codes property ======================= ";

end (pd_test_1_all.cpp:457)

        };
        pandas::CategoricalArray arr(values);

        const std::vector<std::string>& cats = arr.categories();
        if (cats.size() != 3) {
            std::cout << "  [FAIL] : in pd_test_categorical_array_categories_property() : categories size != 3" << std::endl;
            throw std::runtime_error("pd_test_categorical_array_categories_property failed: categories size != 3");
        }

        // Categories should be unique
        std::set<std::string> unique_cats(cats.begin(), cats.end());
        if (unique_cats.size() != cats.size()) {
            std::cout << "  [FAIL] : in pd_test_categorical_array_categories_property() : categories not unique" << std::endl;
            throw std::runtime_error("pd_test_categorical_array_categories_property failed: categories not unique");
        }

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

    void pd_test_categorical_array_codes_property() {
        std::cout << "========= CategoricalArray: codes property ======================= ";