## Let's see some object oriented - like ideas in Julia
struct Person
  name::String
  year::Int 
end
struct Assignment
  name::String
  duedate::String
end
struct ClassObject
  people::Vector{Person}
  room::String
  grades::Vector{Int}
  assignments::Vector{Assignment}
end 

function add_person!(class::ClassObject, person::Person)
  push!(class.people, person)
  push!(class.grades, 0)
end
# In Python, this might have been
# class = ClassObject()
# class.add_person(Person("John", 1990))
# In Julia, we'd do...
# 
class = ClassObject([], "Room 101", [], [])
add_person!(class, Person("John", 1990))

begin 
  add_person!(class, Person("Xing", 1992))
  add_person!(class, Person("Albert", 1992))
  add_person!(class, Person("Cassandra", 1993))
end   

4-element Vector{Int64}:
 0
 0
 0
 0

##