Yet Another Proc Composer in Ruby

proc_compressor.rb

class ProcCompressor
  def initialize(n)
    @proc = proc.curry(n+1)
  end

  def <<(arg)
    @proc = @proc[arg]
    Proc===@proc ? self : @proc
  end

  def to_proc
    @proc
  end

  private
  def proc
    ->*args{ args.inject(args.pop) { |mem, pr| pr.call(mem) } }
  end
end