danini-the-panini · August 23, 2023 07:54 · Aug 23, 2023
diff --git a/inheritance.rb b/inheritance.rb
@@ -0,0 +1,68 @@
+class Foo
+
+  def call_foo
+    foo
+  end
+
+  def call_self_foo
+    self.foo
+  end
+
+  def call_other_foo(other)
+    other.foo
+  end
+
+  private # <-- change this to protected and see what changes
+
+    def foo
+      puts 'Foo#foo got called'
+    end
+
+end
+
+class Bar < Foo
+
+  def bar_call_foo
+    foo
+  end
+
+  def bar_call_self_foo
+    self.foo
+  end
+
+  def bar_call_other_foo(other)
+    other.foo
+  end
+
+end
+
+class NotFoo
+
+  protected
+
+    def foo
+      puts 'NotFoo#foo got called'
+    end
+
+end
+
+Foo.new.call_foo
+
+Foo.new.call_self_foo
+
+Foo.new.call_other_foo(Foo.new) rescue puts $!.message
+
+Foo.new.call_other_foo(Bar.new) rescue puts $!.message
+
+Foo.new.call_other_foo(NotFoo.new) rescue puts $!.message
+
+Bar.new.call_foo
+
+Bar.new.call_self_foo
+
+Bar.new.call_other_foo(Foo.new) rescue puts $!.message
+
+Bar.new.call_other_foo(Bar.new) rescue puts $!.message
+
+Bar.new.call_other_foo(NotFoo.new) rescue puts $!.message
+
diff --git a/mixin.rb b/mixin.rb
@@ -0,0 +1,58 @@
+module Foo
+
+  def call_foo
+    foo
+  end
+
+  def call_self_foo
+    self.foo
+  end
+
+  def call_other_foo(other)
+    other.foo
+  end
+
+  private # <-- change this to protected and see what changes
+
+    def foo
+      puts 'Foo#foo got called'
+    end
+
+end
+
+class Bar
+
+  include Foo
+
+  def bar_call_foo
+    foo
+  end
+
+  def bar_call_self_foo
+    self.foo
+  end
+
+  def bar_call_other_foo(other)
+    other.foo
+  end
+
+end
+
+class NotFoo
+
+  protected
+
+    def foo
+      puts 'NotFoo#foo got called'
+    end
+
+end
+
+Bar.new.call_foo
+
+Bar.new.call_self_foo
+
+Bar.new.call_other_foo(Bar.new) rescue puts $!.message
+
+Bar.new.call_other_foo(NotFoo.new) rescue puts $!.message
+