JSON for Modern C++ 3.9.1

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~basic_json
| ## ◆ swap() [1/6] 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 = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>
void nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::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
  type_error.310 | when JSON value is not an array; example: `"cannot use swap() with string"`
  Complexity Constant. Example The example below shows how arrays can be swapped with `swap()`. 1 #include <iostream> 2 #include <nlohmann/json.hpp> 3 4 using json = nlohmann::json; 5 6 int main() 7 { 8 // create a JSON value 9 json value = {{"array", {1, 2, 3, 4}}}; 10 11 // create an array_t 12 json::array_t array = {"Snap", "Crackle", "Pop"}; 13 14 // swap the array stored in the JSON value 15 value["array"].swap(array); 16 17 // output the values 18 std::cout << "value = " << value << '\n'; 19 std::cout << "array = " << array << '\n'; 20 } nlohmann::basic_json::value ValueType value(const typename object_t::key_type &key, const ValueType &default_value) const access specified object element with default value Definition: json.hpp:20946 nlohmann::basic_json::array_t ArrayType< basic_json, AllocatorType< basic_json > > array_t a type for an array Definition: json.hpp:17573 nlohmann::json basic_json<> json default JSON class Definition: json.hpp:3385 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 -Isingle_include doc/examples/swap__array_t.cpp -o swap__array_t
Since version 1.0.0 Definition at line 23094 of file json.hpp.