1.1 KiB
1.1 KiB
basic_json::clear
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());
Exception safety
No-throw guarantee: this function never throws exceptions.
Complexity
Linear in the size of the JSON value.
Notes
All iterators, pointers and references related to this container are invalidated.
Example
??? example
The example below shows the effect of `clear()` to different
JSON types.
```cpp
--8<-- "examples/clear.cpp"
```
Output:
```json
--8<-- "examples/clear.output"
```
Version history
- Added in version 1.0.0.
- Added support for binary types in version 3.8.0.