JSON for Modern C++  2.0.0
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>
iterator nlohmann::basic_json::insert ( const_iterator  pos,
const_iterator  first,
const_iterator  last 
)
inline

Inserts elements from range [first, last) before iterator pos.

Parameters
[in]positerator before which the content will be inserted; may be the end() iterator
[in]firstbegin of the range of elements to insert
[in]lastend of the range of elements to insert
Exceptions
std::domain_errorif called on JSON values other than arrays; example: "cannot use insert() with string"
std::domain_errorif pos is not an iterator of *this; example: "iterator does not fit current value"
std::domain_errorif first and last do not belong to the same JSON value; example: "iterators do not fit"
std::domain_errorif first or last are iterators into container for which insert is called; example: "passed iterators may not belong to container"
Returns
iterator pointing to the first element inserted, or pos if first==last
Complexity
Linear in std::distance(first, last) plus linear in the distance between pos and end of the container.
Example
The example shows how insert() is used.
1 #include <json.hpp>
2 
3 using json = nlohmann::json;
4 
5 int main()
6 {
7  // create a JSON array
8  json v = {1, 2, 3, 4};
9 
10  // create a JSON array to copy values from
11  json v2 = {"one", "two", "three", "four"};
12 
13  // insert range from v2 before the end of array v
14  auto new_pos = v.insert(v.end(), v2.begin(), v2.end());
15 
16  // output new array and result of insert call
17  std::cout << *new_pos << '\n';
18  std::cout << v << '\n';
19 }
basic_json<> json
default JSON class
Definition: json.hpp:9587
Output (play with this example online):
"one"
[1,2,3,4,"one","two","three","four"]
The example code above can be translated with
g++ -std=c++11 -Isrc doc/examples/insert__range.cpp -o insert__range 
Since
version 1.0.0

Definition at line 5003 of file json.hpp.