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basic_json::crbegin

const_reverse_iterator crbegin() const noexcept;

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

Illustration from cppreference.com

Return value

reverse iterator to the first element

Exception safety

No-throw guarantee: this member function never throws exceptions.

Complexity

Constant.

Example

Example

The following code shows an example for crbegin().

#include <iostream>
#include <nlohmann/json.hpp>

using json = nlohmann::json;

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

Version history

  • Added in version 1.0.0.