method aliasing

It's possible to create aliases for methods in Ruby:

	class Hello
	def say_hello
	puts "Hello!"
	end
	alias greet say_hello
	end

view raw alias_example.rb hosted with ❤ by GitHub

Now we can call either say_hello or greet and have the same results:

> h = Hello.new
=> #<Hello:0x9390ba8>

> h.say_hello
Hello!
=> nil

> h.greet
Hello!
=> nil