On hacklang.org, use the search functionality to find documentation on 'readonly' properties. Once found, explain how to define and use a 'readonly' property, including its key characteristics and limitations as described in the documentation.
Navigate to hacklang.org. Locate the search input field. Enter 'readonly' into the search input field. Submit the search query (e.g., by pressing Enter or clicking a search button if available). From the search results, identify and navigate to the most relevant documentation page for 'readonly' properties. Extract information on how to define and use 'readonly' properties. Identify any key characteristics or limitations of 'readonly' properties as described in the documentation.
Successfully navigates to hacklang.org. Utilizes the search bar to search for 'readonly'. Successfully locates and accesses the documentation for 'readonly' properties, likely via search results. Explains that 'readonly' properties are defined using the `readonly` keyword before the property type and name (e.g., `public readonly int $x;`). States that 'readonly' properties can only be initialized once, either at the point of declaration or within the constructor of the class. Mentions that 'readonly' properties cannot be modified after initialization, even within the class methods, except for specific scenarios like cloning or unserialization if applicable and documented.