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class Pen
attr_reader :written, :color
def initialize(color = :black)
@color = color
@written = []
end
def write(string)
@written << string
string
end
def write_block(&block)
string = yield
@written << string
string
end
def write_hello
write("hello")
end
def write_array(*args)
args.each do |arg|
write(arg)
end
end
def greet(hello = "hello", name)
write("#{hello} #{name}")
end
def public_method
end
def another
"another"
end
def opt_kwargs(required, opt: nil, opt2: nil)
[required, opt: opt, opt2: opt2]
end
def keyrest(**kwargs)
kwargs
end
def req_kwargs(req1:, req2:)
[req1, req2]
end
protected
def protected_method
end
private
def private_method
end
class << self
def another
"another"
end
def public_method
end
protected
def protected_method
end
private
def private_method
end
end
end
Pen.define_singleton_method(:meta_class_method) do
"meta_class_method".freeze
end
Pen.send(:define_method, :meta_method) do
"meta_method".freeze
end
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