ChunkReader

class numpy::ChunkReader

numpy C++ class.

Example

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

// Use ChunkReader
ChunkReader obj;
// ... operations ...

Other Methods

Signature	Return Type	Location	Example
ChunkReader(const std::string& filename) : file(filename, std::ios::binary), has_value(false)	ChunkReader(const std::string& filename) : file(filename, std::ios::binary),	np_sorting_algorithms.h:1780	View
void read_next()	void	np_sorting_algorithms.h:1784

Code Examples

The following examples are extracted from the test suite.

has_value (np_test_5_all.cpp:11406)

      // Test nditer_reduce (sum)
      double sum = numpy::nditer_reduce(arr, [](double acc, double val) {
        return acc + val;
        }, 0.0);

      if (std::abs(sum - 21.0) > 1e-10) {  // 1+2+3+4+5+6 = 21
        std::cout << "  [FAIL] : in np_test_functional_iteration() : nditer_reduce sum wrong";
        throw std::runtime_error("np_test_functional_iteration failed");
      }

      // Test nditer_find
      auto result = numpy::nditer_find(arr, [](double val) { return val > 3.5; });
      if (!result.has_value() || result.value().second != 4.0) {
        std::cout << "  [FAIL] : in np_test_functional_iteration() : nditer_find failed";
        throw std::runtime_error("np_test_functional_iteration failed");
      }

      // Test nditer_count
      size_t count = numpy::nditer_count(arr, [](double val) { return val > 2.0; });
      if (count != 4) {  // 3, 4, 5, 6