-- ============================================================================
-- This is a simple Person class (Raw example without synthetic sugar).
-- ============================================================================
Person1 = {}

-- Constructor
function Person1.new(self, name, age)
  local o = {}
  self.__index = self
  setmetatable(o, self)
  o.name = name
  o.age = age
  return o
end

-- Methods
function Person1.getName(self)
  return self.name
end

function Person1.getAge(self)
  return self.age
end

-- Usage
local instance = Person1.new(Person1, "John", 30)
print('name: ' .. instance.getName(instance))  -- John
print('age: ' .. instance.getAge(instance))  -- 30

-- Garbage collection
Person1 = nil
instance = nil


-- ============================================================================
-- This is a simple Person class (Synthetic sugar example).
-- ============================================================================
Person2 = {}

-- Constructor
function Person2:new(name, age)
  local o = {}
  self.__index = self
  setmetatable(o, self)
  o.name = name
  o.age = age
  return o
end

-- Methods
function Person2:getName()
  return self.name
end

function Person2:getAge()
  return self.age
end

-- Usage
local instance = Person2:new("John Doe", 50)
print('name: ' .. instance:getName())  -- John Doe
print('age: ' .. instance:getAge())  -- 50

-- Garbage collection
Person2 = nil
instance = nil


-- ============================================================================
-- This is my class definition method (with Synthetic sugar example).
-- ============================================================================
Person = {}

-- Constructor
function Person:new(name, age)
  local this = setmetatable({}, {__index = self})
  this.name = name or 'EndMove'
  this.age = age or 20
  return this
end

-- Methods
function Person:getFName()
  return 'name: ' .. self.name
end

function Person:getFAge()
  return 'age: ' .. self.age
end

-- Usage
local instance = Person:new("Gashy", 21)
print(instance:getFName())  -- name: Gashy
print(instance:getFAge())  -- age: 21

-- Garbage collection
Person = nil
instance = nil

-- ============================================================================
-- Thanks for reading!