Rubyでカリー化函数

currying_func.rb

curry = ->(f){
  args = []
  return rec = ->(a){
    args << a
    return f.call(*args) if (args.length == f.arity) || (f.arity == -1)
    return rec
  }
}

if __FILE__ == $0
  func = ->(a,b,c){ a * b * c }
  
  puts func[1,2,3]
  puts curry[func][1][2][3]
end