User names are: John, Jack, Sarah, Norah, Michael (users were presented with array data)
List of users converted to objects consists of types: stdClass, stdClass, stdClass, stdClass, stdClass
List of user class instances with name consists of types: User, User, User, User, User
List of user class instances name and age consists of types: User, User, User, User, User
Users sorted by age:
    John - 15 y.o.
    Norah - 20 y.o.
    Sarah - 25 y.o.
    Michael - 30 y.o.
    Jack - 35 y.o.
All numbers are positive