JSON for Modern C++ 2.1.1
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◆ basic_json() [9/9]

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 = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer>
nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::basic_json ( basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer > &&  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
[in,out]othervalue to move to this object
Postcondition
other is a JSON null value
Complexity\n Constant.
Example\n The code below shows the move constructor explicitly called
via std::move.
1#include <json.hpp>
2
3using json = nlohmann::json;
4
5int main()
6{
7 // create a JSON value
8 json a = 23;
9
10 // move contents of a to b
11 json b(std::move(a));
12
13 // serialize the JSON arrays
14 std::cout << a << '\n';
15 std::cout << b << '\n';
16}
static basic_json array(std::initializer_list< basic_json > init=std::initializer_list< basic_json >())
explicitly create an array from an initializer list
Definition json.hpp:2165
a class to store JSON values
Definition json.hpp:1040
basic_json<> json
default JSON class
Definition json.hpp:12369

Output (play with this example online):
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 
Since
version 1.0.0

Definition at line 2505 of file json.hpp.