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# nlohmann::basic_json::boolean_t

    using boolean_t = BooleanType;

The type used to store JSON booleans.

RFC 8259 implicitly describes a boolean as a type which differentiates the two literals `true` and `false`.

To store objects in C++, a type is defined by the template parameter `BooleanType` which chooses the type to use.

## Notes

#### Default type

With the default values for `BooleanType` (`bool`), the default value for `boolean_t` is `bool`.

#### Storage

Boolean values are stored directly inside a `basic_json` type.

## Examples

Example

The following code shows that `boolean_t` is by default, a typedef to `bool`.

    #include <iostream>
    #include <iomanip>
    #include <nlohmann/json.hpp>

    using json = nlohmann::json;

    int main()
    {
        std::cout << std::boolalpha << std::is_same<bool, json::boolean_t>::value << std::endl;
    }

Output:

    true

## Version history

- Added in version 1.0.0.

Last update: May 1, 2022
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