mirror of
https://github.com/nlohmann/json.git
synced 2024-12-17 23:57:52 +08:00
40 lines
638 B
Markdown
40 lines
638 B
Markdown
|
# basic_json::is_binary
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
constexpr bool is_binary() const noexcept;
|
||
|
|
```
|
||
|
|
|
||
|
|
This function returns `#!cpp true` if and only if the JSON value is binary array.
|
||
|
|
|
||
|
|
## Return value
|
||
|
|
|
||
|
|
`#!cpp true` if type is binary, `#!cpp false` otherwise.
|
||
|
|
|
||
|
|
## Exception safety
|
||
|
|
|
||
|
|
No-throw guarantee: this member function never throws exceptions.
|
||
|
|
|
||
|
|
## Complexity
|
||
|
|
|
||
|
|
Constant.
|
||
|
|
|
||
|
|
## Example
|
||
|
|
|
||
|
|
??? example
|
||
|
|
|
||
|
|
The following code exemplifies `is_binary()` for all JSON types.
|
||
|
|
|
||
|
|
```cpp
|
||
|
|
--8<-- "examples/is_binary.cpp"
|
||
|
|
```
|
||
|
|
|
||
|
|
Output:
|
||
|
|
|
||
|
|
```json
|
||
|
|
--8<-- "examples/is_binary.output"
|
||
|
|
```
|
||
|
|
|
||
|
|
## Version history
|
||
|
|
|
||
|
|
- Added in version 3.8.0.
|