JSON for Modern C++  3.0.1

◆ update() [1/2]

template<template< typename, typename, typename... > class ObjectType = std::map, template< typename, typename... > 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 > class AllocatorType = std::allocator, template< typename, typename=void > class JSONSerializer = adl_serializer>
void nlohmann::basic_json::update ( const_reference  j)
inline

Inserts all values from JSON object j and overwrites existing keys.

Parameters
[in]jJSON object to read values from
Exceptions
type_error.312if called on JSON values other than objects; example: "cannot use update() with string"
Complexity O(N*log(size() + N)), where N is the number of elements to
insert.
Example The example shows how update() is used. update.cpp Output (play with this example update.link): update.output The example code above can be translated withg++ -std=c++11 -Isrc doc/examples/update.cpp -o update
See also
https://docs.python.org/3.6/library/stdtypes.html#dict.update
Since
version 3.0.0

Definition at line 12256 of file json.hpp.