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>
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. 1 #include <json.hpp> 2 3 using namespace nlohmann; 4 5 int main() 6 { 7 // create JSON values 8 json a = 23; 9 json b = 42; 10 11 // copy-assign a to b 12 b = a; 13 14 // serialize the JSON arrays 15 std::cout << a << '\n'; 16 std::cout << b << '\n'; 17 } nlohmann::basic_json a class to store JSON values Definition: json.hpp:130 nlohmann namespace for Niels Lohmann Definition: json.hpp:55 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