[MacRuby-devel] super method

[Konstantin Haase]

On Sep 7, 2010, at 21:53 , Robert Rice wrote:

> I didn't see super in the ruby-doc.org/ruby-1.9/index.html unless super is short for superclass.

In Ruby, super is not a real method call but a key word. Also, it does not behave exactly like a method call (implicit arguments/block and what not). Therefore it is not in the generated method list.

> 
> Can I reach a superclass method without having the message go first to my subclass override of the method?

Not as easily and general as in Smalltalk but you can do something like this:


	class Foo
		def foo
			20
		end
	end

	class Bar < Foo
		def foo
			super * 2
		end
	end

	class Baz < Bar
		def foo
			method = Foo.instance_method(__method__).bind(self)
			method.call
		end
	end

	puts Foo.new.foo # => 20
	puts Bar.new.foo # => 40
	puts Baz.new.foo # => 20

Konstantin