title: How can I get a reference to a method?
body: <p>Is it possible in Ruby to get a reference to methods of an object ( I would like to know if this can be done without procs/lambdas ) , for example , consider the following code :</p>
  
  <pre><code>
  class X
    def initialize
      @map = {}
      setup_map
    end
  
    private
    def setup_map
      # @map["a"] = get reference to a method
      # @map["b"] = get reference to b method
      # @map["c"] = get referebce to c method
    end
  
    public
    def call(a)
      @map["a"](a) if a > 10
      @map["b"](a) if a > 20
      @map["c"](a) if a > 30
    end
  
    def a(arg)
       puts "a was called with #{arg}"
    end
  
    def b(arg)
       puts "b was called with #{arg}"
    end
  
    def c(arg)
      puts "c was called with #{arg}"
    end
  end
  </code></pre>
  
  <p>Is it possible to do such thing ? I would like to avoid procs/lambdas because I want to be able to change the behaviour of A,B,C by subclassing .</p>