Given an object with nested objects, this function flattens the object by creating key paths for nested values.
This technical problem asks the reader to write a Python class that implements a stack using a linked list. The stack should have methods for pushing an integer onto the stack, popping and returning the top element of the stack, and checking if the stack is empty.
This technical problem deals with creating a Python class named "Foo" with an instance variable named "value". The class also has two methods, "double" and "triple", which multiply the value by 2 and 3, respectively.