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662 B
662 B
nlohmann::basic_json::is_string
constexpr bool is_string() const noexcept;
This function returns #!cpp true if and only if the JSON value is a string.
Return value
#!cpp true if type is a string, #!cpp false otherwise.
Exception safety
No-throw guarantee: this member function never throws exceptions.
Complexity
Constant.
Examples
??? example
The following code exemplifies `is_string()` for all JSON types.
```cpp
--8<-- "examples/is_string.cpp"
```
Output:
```json
--8<-- "examples/is_string.output"
```
Version history
- Added in version 1.0.0.