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sashaegorov/ruby_private_inheritance.rb

Created January 13, 2016 16:53
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Ruby private inheritance
Raw
ruby_private_inheritance.rb
class Parent
attr_accessor :a, :b
def initialize(a)
@a = a
end
private
def set_b
@b = 'b'
end
end
class Child < Parent
attr_accessor :c
def initialize(c)
@c = c
end
def set_c
set_b
end
end
c = Child.new('x')
# => #<Child:0x007f9989919680 @c="x">
c.a
# => nil
c.b
# => nil
c.c
# => "x"
c.set_c
# => "b"
c.a
# => nil
c.b
# => "b"
c.c
# => "x"
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