1# <small>nlohmann::basic_json::</small>begin 2 3```cpp 4iterator begin() noexcept; 5const_iterator begin() const noexcept; 6``` 7 8Returns an iterator to the first element. 9 10 11 12## Return value 13 14iterator to the first element 15 16## Exception safety 17 18No-throw guarantee: this member function never throws exceptions. 19 20## Complexity 21 22Constant. 23 24## Examples 25 26??? example 27 28 The following code shows an example for `begin()`. 29 30 ```cpp 31 --8<-- "examples/begin.cpp" 32 ``` 33 34 Output: 35 36 ```json 37 --8<-- "examples/begin.output" 38 ``` 39 40## Version history 41 42- Added in version 1.0.0. 43
