api/basic_json_view/cend.md

# <small>nlohmann::basic_json_view::</small>cend

```cpp
iterator cend() const noexcept;
```

Returns an iterator to one past the last element, in [document order](begin.md). Equivalent to [`end()`](end.md): a
view is always read-only, so `#!cpp const_iterator` and `#!cpp iterator` are the same type, and `cend()` exists only
so that generic code that expects a `cbegin()`/`cend()` pair works with a view too.

## Return value

Iterator one past the last element; identical to what [`end()`](end.md) returns.

## Exception safety

No-throw guarantee: this function never throws exceptions.

## Complexity

Constant.

## Examples

??? example

    The example below checks that every record of a batch is an object with `std::all_of`, using
    [`cbegin()`](cbegin.md)/`cend()` as the range -- the same way it would for any standard container -- before
    materializing any record of the batch.

    ```cpp
    #include <algorithm>
    #include <iostream>
    #include <nlohmann/json_view.hpp>
    
    using nlohmann::json_document;
    using nlohmann::json_view;
    
    int main()
    {
        // check that every element of a (possibly large) batch is an object,
        // before materializing any of them -- cbegin()/cend() (identical to
        // begin()/end() here) work as the range for std::all_of like they would
        // for any standard container
        json_document batch = json_document::parse(R"([{"id": 1}, {"id": 2}, {"id": 3}])");
        const auto records = batch.root();
    
        const bool all_objects = std::all_of(records.cbegin(), records.cend(),
                                             [](const json_view & v)
        {
            return v.is_object();
        });
    
        std::cout << std::boolalpha << all_objects << '\n';
    }
    
    ```

    Output:

    ```json
    true
    
    ```

## See also

- [end](end.md) - returns an iterator to one past the last element
- [cbegin](cbegin.md) - returns a const iterator to the first element
- [`BasicJsonType::cend`](../basic_json/cend.md) - the corresponding function of `basic_json`

## Version history

- Added in version 3.13.0.