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nlohmann::basic_json::type_error

class type_error : public exception;

This exception is thrown in case of a type error; that is, a library function is executed on a JSON value whose type does not match the expected semantics.

Exceptions have ids 3xx (see list of type errors).

std::exception <|-- basic_json::exception
basic_json::exception <|-- basic_json::parse_error
basic_json::exception <|-- basic_json::invalid_iterator
basic_json::exception <|-- basic_json::type_error
basic_json::exception <|-- basic_json::out_of_range
basic_json::exception <|-- basic_json::other_error

interface std::exception {}

class basic_json::exception {
    + const int id
    + const char* what() const
}

class basic_json::parse_error {
    + const std::size_t byte
}

class basic_json::type_error #FFFF00 {}

Member functions

  • what - returns explanatory string

Member variables

  • id - the id of the exception

Examples

??? example

The following code shows how a `type_error` exception can be caught.

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

Output:

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

See also

Version history

  • Since version 3.0.0.