longvudai · March 18, 2020 18:10
diff --git a/Person.swift b/Person.swift
 class Person {
  
  let name: String

  init(name: String) {
    self.name = name
    print("\(name) is being initialized")
  }
  
  deinit {
    print("\(name) is being deinitialized")
  }
 }
diff --git a/reference1.swift b/reference1.swift
 var reference1 = Person(name: "John Appleseed")
 // output: "John Appleseed is being initialized"
diff --git a/references2-3p1.swift b/references2-3p1.swift
 var reference2: Person?
 var reference3: Person?
diff --git a/references2-3p2.swift b/references2-3p2.swift
 reference2 = reference1
 reference3 = reference1
diff --git a/release.swift b/release.swift
 reference1 = nil // reference counts = 2
 reference2 = nil // reference counts = 1
 reference3 = nil // reference counts = 0
 // output: "John Appleseed is being deinitialized"
	class Person {

	let name: String

	init(name: String) {
	self.name = name
	print("\(name) is being initialized")
	}

	deinit {
	print("\(name) is being deinitialized")
	}
	}
	var reference1 = Person(name: "John Appleseed")
	// output: "John Appleseed is being initialized"
	reference1 = nil // reference counts = 2
	reference2 = nil // reference counts = 1
	reference3 = nil // reference counts = 0
	// output: "John Appleseed is being deinitialized"