Defined in header <fkYAML/node.hpp>

fkyaml::basic_node::as_bool

boolean_type& as_bool();
const boolean_type& as_bool() const;

Returns (const) reference to the boolean node value.
If the current node value is not a boolean, a fkyaml::type_error will be thrown.

Return Value

(const) reference to the boolean node value.

Examples

Example

#include <iostream>
#include <iomanip>
#include <fkYAML/node.hpp>

int main() {
    // create a boolean node.
    fkyaml::node n = true;

    // get reference to the boolean value from a non-const node.
    // use `auto&` or `fkyaml::node::boolean_type&` for forward compatibility.
    auto& b = n.as_bool();
    // get const reference to the boolean value from a const node.
    const fkyaml::node cn = n;
    const auto& cb = cn.as_bool();

    // modify the boolean value.
    b = false;

    std::cout << std::boolalpha << b << std::endl;
    std::cout << std::boolalpha << cb << std::endl;
}

output:

false
true

See Also

• node_type