JSON for Modern C++ 3.0

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~basic_json
| template<template< typename U, typename V, typename...Args > class ObjectType = std::map, template< typename U, typename...Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = int64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator>
void nlohmann::basic_json::swap | ( | array_t & | other | ) |
| inline
  Exchanges the contents of a JSON array with those of other. Does not invoke any move, copy, or swap operations on individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated. Parameters
  [in,out] | other | array to exchange the contents with
  Exceptions
  std::domain_error | when JSON value is not an array
  Complexity Constant. Example The example below shows how JSON values can be swapped. 1 #include <json.hpp> 2 3 using namespace nlohmann; 4 5 int main() 6 { 7 // create a JSON value 8 json value = {{"array", {1, 2, 3, 4}}}; 9 10 // create an array_t 11 json::array_t array = {"Snap", "Crackle", "Pop"}; 12 13 // swap the array stored in the JSON value 14 value["array"].swap(array); 15 16 // output the values 17 std::cout << "value = " << value << '\n'; 18 std::cout << "array = " << array << '\n'; 19 } nlohmann::basic_json::array_t ArrayType< basic_json, AllocatorType< basic_json >> array_t a type for an array Definition: json.hpp:303 nlohmann::basic_json a class to store JSON values Definition: json.hpp:130 nlohmann namespace for Niels Lohmann Definition: json.hpp:55 nlohmann::basic_json::swap void swap(reference other) noexcept(std::is_nothrow_move_constructible< value_t >::value andstd::is_nothrow_move_assignable< value_t >::value andstd::is_nothrow_move_constructible< json_value >::value andstd::is_nothrow_move_assignable< json_value >::value) exchanges the values Definition: json.hpp:3743 Output (play with this example online):
      value = {"array":["Snap","Crackle","Pop"]}
      array = [1,2,3,4]
  The example code above can be translated with
      g++ -std=c++11 -Isrc doc/examples/swap__array_t.cpp -o swap__array_t