|
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>
Exchanges the contents of a JSON object 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 | object to exchange the contents with |
- Exceptions
-
std::domain_error | when JSON value is not an object; example: "cannot use swap() with string" |
- Complexity
- Constant.
- Example
- The example below shows how objects can be swapped with
swap() . 8 json value = { { "translation", {{ "one", "eins"}, { "two", "zwei"}}} }; 14 value[ "translation"].swap( object); 17 std::cout << "value = " << value << '\n'; 18 std::cout << "object = " << object << '\n'; basic_json<> json default JSON class
ObjectType< StringType, basic_json, std::less< StringType >, AllocatorType< std::pair< const StringType, basic_json >>> object_t a type for an object
Output (play with this example online): value = {"translation":{"cow":"Kuh","dog":"Hund"}}
object = {"one":"eins","two":"zwei"}
The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/swap__object_t.cpp -o swap__object_t
- Since
- version 1.0.0
Definition at line 5165 of file json.hpp.
|