void clear() noexcept;
Clears the content of a JSON value and resets it to the default value as if basic_json(value_t) would have been called with the current value type from type():
| Value type | initial value |
|---|---|
| null | null |
| boolean | false |
| string | "" |
| number | 0 |
| binary | An empty byte vector |
| object | {} |
| array | [] |
Has the same effect as calling
*this = basic_json(type());
No-throw guarantee: this function never throws exceptions.
Linear in the size of the JSON value.
All iterators, pointers and references related to this container are invalidated.
??? example
The example below shows the effect of `clear()` to different JSON types. ```cpp --8<-- "examples/clear.cpp" ``` Output: ```json --8<-- "examples/clear.output" ```