gistfile1.rb

#!/usr/bin/env ruby

class TryProxy
  def initialize(object)
    @object = object
  end

  def method_missing(meth, *args, &block)
    if @object.respond_to?(meth)
      @object.__send__(meth, *args, &block)
    elsif @object.nil?
      nil
    else
      super
    end
  end
end

class Object
  def try
    TryProxy.new(self)
  end
end

p "foo".try.chomp("o") #=> "fo"
p nil.try.chomp("o")   #=> nil