JSON for Modern C++ 3.7.3

accept
accept
accept
allocator_type
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at
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basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
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end
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~basic_json
| ## ◆ swap() [4/6]
void nlohmann::basic_json::swap | ( | reference | other | ) |
| inline noexcept
  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 values 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 two JSON values 9 json j1 = {1, 2, 3, 4, 5}; 10 json j2 = {{"pi", 3.141592653589793}, {"e", 2.718281828459045}}; 11 12 // swap the values 13 j1.swap(j2); 14 15 // output the values 16 std::cout << "j1 = " << j1 << '\n'; 17 std::cout << "j2 = " << j2 << '\n'; 18 } Output (play with this example online):
      j1 = {"e":2.718281828459045,"pi":3.141592653589793}
      j2 = [1,2,3,4,5]
  The example code above can be translated with
      g++ -std=c++11 -Isingle_include doc/examples/swap__reference.cpp -o swap__reference
Since version 1.0.0 Definition at line 21654 of file json.hpp.

nlohmann::json
basic_json<> json
default JSON class
Definition: json.hpp:2774