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◆ swap() [4/6]
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, class BinaryType = std::vector<std::uint8_t>>
void nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::swap |
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reference |
other | ) |
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inlinenoexcept |
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
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[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() .
2#include <nlohmann/json.hpp>
9 json j1 = {1, 2, 3, 4, 5};
10 json j2 = {{ "pi", 3.141592653589793}, { "e", 2.718281828459045}};
16 std::cout << "j1 = " << j1 << '\n';
17 std::cout << "j2 = " << j2 << '\n';
basic_json<> json default JSON class
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 23619 of file json.hpp.
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