json/api/basic_json/cend/index.md

nlohmann::basic_json::cend

const_iterator cend() const noexcept;

Returns an iterator to one past the last element.

cend() points to the position after the last element, like end(), and begin() to the first element; the dashed cell is the past-the-last position, which must not be dereferenced.

Return value

iterator one past the last element

Exception safety

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

Complexity

Constant.

Examples

Example

The following code shows an example for cend().

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

using nlohmann::json;

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

    // get an iterator to one past the last element
    json::const_iterator it = array.cend();

    // decrement the iterator to point to the last element
    --it;

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

Output:

5

See also

• end - returns an iterator to one past the last element
• cbegin - returns a const iterator to the first element
• crend - returns a const reverse iterator to one before the first element
• Iterators - the article on iterators
• basic_json_view::cend - the same iteration on a zero-copy view

Version history

• Added in version 1.0.0.