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>

nlohmann::basic_json::basic_json ( basic_json &&  other )

inlinenoexcept

Move constructor. Constructs a JSON value with the contents of the given value other using move semantics. It "steals" the resources from other and leaves it as JSON null value.

Parameters

other

value to move to this object

Postcondition

other is a JSON null value

Complexity

Constant.

Example

The code below shows the move constructor explicitly called via std::move.

#include <json.hpp>

using namespace nlohmann;

int main()
{
    // create a JSON value
    json a = 23;

    // move contents of a to b
    json b(std::move(a));

    // serialize the JSON arrays
    std::cout << a << '\n';
    std::cout << b << '\n';
}

Output:

null
23

The example code above can be translated with

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

.