includes_advanced: Check if an object contains required elements
Description
This function checks that x includes all of the required elements.
x must be the same type as required.
Usage
includes_advanced(x, required)
Value
Returns TRUE if x is the same type as required and x includes all the required elements.
Otherwise returns a string representing the appropriate error message to display
Arguments
- x
An object to check
- required
The required elements to check for