use Scalar;
/// Convert any YAML scalar value to its String representation.
///
/// Numerical and binary values are converted to string using the `format`
/// macro.
///
/// If the scalar is neither a boolean, a floating value, an integer or a
/// string, the function returns "null" instead.
///
/// # Parameters
///
/// * `node` - The YAML Scalar node to extract from.
///
/// # Return
///
/// Whatever the node contains, formatted into a new String.