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
const_reverse_iterator
count
crbegin
crend
difference_type
dump
empty
end
end
erase
erase
erase
erase
find
find
front
front
get
get
get
get_allocator
get_ptr
get_ptr
insert
insert
insert
insert
insert
is_array
is_boolean
is_discarded
is_null
is_number
is_number_float
is_number_integer
is_object
is_primitive
is_string
is_structured
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[]
operator[]
operator[]
operator[]
operator[]
parse
parse
parse_event_t
parser_callback_t
pointer
push_back
push_back
push_back
rbegin
rbegin
reference
rend
rend
reverse_iterator
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>

reference& nlohmann::basic_json::operator= | ( | basic_json | other | ) |

inlinenoexcept

Copy assignment operator. Copies a JSON value via the "copy and swap" strategy: It is expressed in terms of the copy constructor, destructor, and the swap() member function.

Parameters

  [in] | other | value to copy from

Complexity
  Linear.

Requirements
  This function satisfies the Container requirements:
  - The complexity is linear.

Example
  The code below shows and example for the copy assignment. It creates a copy of value `a` which is then swapped with `b`. Finally, the copy of `a` (which is the null value after the swap) is destroyed.
  #include <json.hpp>
  using namespace nlohmann;
  int main()
  {
  // create JSON values
  json a = 23;
  json b = 42;
  // copy-assign a to b
  b = a;
  // serialize the JSON arrays
  std::cout << a << '\n';
  std::cout << b << '\n';
  }
  nlohmann::basic_json
  a class to store JSON values
  Definition: json.hpp:182
  nlohmann
  namespace for Niels Lohmann
  Definition: json.hpp:78
  Output (play with this example online):

      23
      23

  The example code above can be translated with

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