https://twitter.com/p_ck_/status/1127939071278440449

ぽっけさん2.rb

class String
  # def to_proc
  def* to_proc
    puts self
    -> { self }
  end
end

->(&b){b.()}.(&("Hello world" * 42))



# It was a wonderful puzzle! Many thanks!
# I had the following experiences:)

# First of all, I did my best to make 1 with 4 and 2.
# "4*2", "4%2", "4.2"? I realized soon that this was impossible...

# Next, I thought that how can I destroy "* 42"?  how can I destroy "* 42"? how can I destroy "* 42"?
# And I thought about the redefinition of the method as one way.

# I kept thinking. Let's redefine the asterisk! And write "def *". At that time,
# oh? Can I discard "42" as an argument?   ( ﾟдﾟ)ﾊｯ!  I can discard "42" as an argument!