Symbol Expressions Simplified

symbol_expressions.rb

class Symbol
  def |(*args)
    @args = args
    self
  end

  def to_proc
    Proc.new { |obj|
      obj.send *[self] + (@args || [])
    }
  end
end

class Proc
  def self.from_sym(*args)
    new { |obj|
      args.inject(obj) { |obj, arg| arg.to_proc.call(obj) }
    }
  end
end