swap() [1/6]

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 ( array_t &  other )

inline

exchanges the values

Exchanges the contents of a JSON array 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

array to exchange the contents with

Exceptions

type_error.310

when JSON value is not an array; example: "cannot use swap() with string"

@complexity Constant.

@liveexample{The example below shows how arrays can be swapped with swap().,swap__array_t}

Since

version 1.0.0

Definition at line 23864 of file json.hpp.

    {
        // swap only works for arrays
        if (JSON_HEDLEY_LIKELY(is_array()))
        {
            std::swap(*(m_value.array), other);
        }
 
        else
        {
            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
        }
    }