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1.0 KiB
1.0 KiB
nlohmann::basic_json::is_number_unsigned
constexpr bool is_number_unsigned() const noexcept;
This function returns #!cpp true if and only if the JSON value is an unsigned integer number. This excludes
floating-point and signed integer values.
Return value
#!cpp true if type is an unsigned integer number, #!cpp false otherwise.
Exception safety
No-throw guarantee: this member function never throws exceptions.
Complexity
Constant.
Examples
??? example
The following code exemplifies `is_number_unsigned()` for all JSON types.
```cpp
--8<-- "examples/is_number_unsigned.cpp"
```
Output:
```json
--8<-- "examples/is_number_unsigned.output"
```
See also
- is_number() check if value is a number
- is_number_integer() check if value is an integer or unsigned integer number
- is_number_float() check if value is a floating-point number
Version history
- Added in version 2.0.0.