json/api/basic_json/cbegin.md

nlohmann::basic_json::cbegin

const_iterator cbegin() const noexcept;

Returns an iterator to the first element.

Return value

iterator to the first element

Exception safety

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

Complexity

Constant.

Examples

??? example

The following code shows an example for `cbegin()`.

```cpp
--8<-- "examples/cbegin.cpp"
```

Output:

```json
--8<-- "examples/cbegin.output"
```

See also

• begin returns an iterator to the first element
• cend returns a const iterator to one past the last element
• crbegin returns a const reverse iterator to the last element
• Iterators - the article on iterators

Version history

• Added in version 1.0.0.