constexpr bool is_binary() const noexcept;

This function returns #!cpp true if and only if the JSON value is binary array.

#!cpp true if type is binary, #!cpp false otherwise.

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

Constant.

??? example

The following code exemplifies `is_binary()` for all JSON types.

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

Output:

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

• Added in version 3.8.0.