allocator_type
array
array_t
at
at
at
at
back
back
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
begin
begin
boolean_t
cbegin
cend
clear
const_pointer
const_reference
count
crbegin
crend
difference_type
dump
empty
end
end
erase
erase
erase
erase
find
find
front
front
get
get
get_allocator
get_ptr
is_array
is_boolean
is_discarded
is_null
is_number
is_number_float
is_number_integer
is_object
is_primitive
is_string
is_structured
list_init_t
max_size
number_float_t
number_integer_t
object
object_t
operator value_t
operator ValueType
operator!=
operator+=
operator+=
operator+=
operator<
operator<
operator<<
operator<<
operator<=
operator=
operator==
operator>
operator>=
operator>>
operator>>
operator[]
operator[]
operator[]
operator[]
operator[]
operator[]
parse
parse
parse_event_t
parser_callback_t
pointer
push_back
push_back
push_back
rbegin
rbegin
reference
rend
rend
size
size_type
string_t
swap
swap
swap
swap
type
value_t
value_type
~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 | ( | reference | other | ) |

inlinenoexcept

Exchanges the contents of the JSON value 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 | JSON value to exchange the contents with

Complexity
  Constant.

Example
  The example below shows how JSON arrays can be swapped.
  #include <json.hpp>
  using namespace nlohmann;
  int main()
  {
  // create two JSON values
  json j1 = {1, 2, 3, 4, 5};
  json j2 = {{"pi", 3.141592653589793}, {"e", 2.718281828459045}};
  // swap the values
  j1.swap(j2);
  // output the values
  std::cout << "j1 = " << j1 << '\n';
  std::cout << "j2 = " << j2 << '\n';
  }
  nlohmann::basic_json
  a class to store JSON values
  Definition: json.hpp:121
  nlohmann
  namespace for Niels Lohmann
  Definition: json.hpp:56
  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:3230
  Output:

      j1 = {"e":2.71828182845905,"pi":3.14159265358979}
      j2 = [1,2,3,4,5]

  The example code above can be translated with

      g++ -std=c++11 -Isrc doc/examples/swap__reference.cpp -o swap__reference

  .