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 = int64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator>

const_reverse_iterator nlohmann::basic_json::crbegin ( ) const

inlinenoexcept

Returns a const iterator to the reverse-beginning; that is, the last element.

Illustration from cppreference.com

Complexity

Constant.

Requirements

This function satisfies the ReversibleContainer requirements:

• The complexity is constant.
• Has the semantics of const_cast<const basic_json&>(*this).rbegin().

Example

The following code shows an example for crbegin.

#include <json.hpp>

using namespace nlohmann;

int main()
{
    // create an array value
    json array = {1, 2, 3, 4, 5};

    // get an iterator to the reverse-beginning
    json::const_reverse_iterator it = array.crbegin();

    // serialize the element that the iterator points to
    std::cout << *it << '\n';
}

Output:

5

The example code above can be translated with

g++ -std=c++11 -Isrc doc/examples/crbegin.cpp -o crbegin 

.