FBBuilder

class pandas::FBBuilder

Utility class for pandas operations.

Example

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

// Use FBBuilder
FBBuilder obj;
// ... operations ...

Missing Data

Signature	Return Type	Location	Example
void pad(size_t alignment)	void	pd_dataframe.h:39937	View
pad(4)		pd_dataframe.h:39942	View
pad(4)		pd_dataframe.h:39951	View

Other Methods

Signature	Return Type	Location	Example
int32_t current_offset() const	int32_t	pd_dataframe.h:39973
void write_i16(int16_t val)	void	pd_dataframe.h:39955
void write_i32(int32_t val)	void	pd_dataframe.h:39960
void write_i64(int64_t val)	void	pd_dataframe.h:39967
int32_t write_string(const std::string& s)	int32_t	pd_dataframe.h:39941

Code Examples

The following examples are extracted from the test suite.

pad (pd_test_3_all.cpp:1771)

    if (result_single.nrows() != 3 || result_single.ncols() != 1) {
        std::cout << "  [FAIL] : in pd_test_3_all_dataframe_unstack() : single col shape mismatch" << std::endl;
        throw std::runtime_error("pd_test_3_all_dataframe_unstack failed: single col shape");
    }

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

void pd_test_3_all_fbbuilder_pad() {
    std::cout << "========= FBBuilder.pad() (internal) =================";

    // Note: FBBuilder.pad() is an internal method for FlatBuffer serialization
    // It's not the pandas DataFrame.pad() method (which is ffill alias)
    // This test verifies the to_feather() serialization works, which uses FBBuilder.pad()

    std::map<std::string, std::vector<double>> data = {
        {"A", {1.0, 2.0, 3.0}},
        {"B", {4.0, 5.0, 6.0}}
    };
    pandas::DataFrame df(data);

pad (pd_test_3_all.cpp:1771)

    if (result_single.nrows() != 3 || result_single.ncols() != 1) {
        std::cout << "  [FAIL] : in pd_test_3_all_dataframe_unstack() : single col shape mismatch" << std::endl;
        throw std::runtime_error("pd_test_3_all_dataframe_unstack failed: single col shape");
    }

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

void pd_test_3_all_fbbuilder_pad() {
    std::cout << "========= FBBuilder.pad() (internal) =================";

    // Note: FBBuilder.pad() is an internal method for FlatBuffer serialization
    // It's not the pandas DataFrame.pad() method (which is ffill alias)
    // This test verifies the to_feather() serialization works, which uses FBBuilder.pad()

    std::map<std::string, std::vector<double>> data = {
        {"A", {1.0, 2.0, 3.0}},
        {"B", {4.0, 5.0, 6.0}}
    };
    pandas::DataFrame df(data);

pad (pd_test_3_all.cpp:1771)

    if (result_single.nrows() != 3 || result_single.ncols() != 1) {
        std::cout << "  [FAIL] : in pd_test_3_all_dataframe_unstack() : single col shape mismatch" << std::endl;
        throw std::runtime_error("pd_test_3_all_dataframe_unstack failed: single col shape");
    }

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

void pd_test_3_all_fbbuilder_pad() {
    std::cout << "========= FBBuilder.pad() (internal) =================";

    // Note: FBBuilder.pad() is an internal method for FlatBuffer serialization
    // It's not the pandas DataFrame.pad() method (which is ffill alias)
    // This test verifies the to_feather() serialization works, which uses FBBuilder.pad()

    std::map<std::string, std::vector<double>> data = {
        {"A", {1.0, 2.0, 3.0}},
        {"B", {4.0, 5.0, 6.0}}
    };
    pandas::DataFrame df(data);