From: Paul <webmaster@...>
Date: 2003-07-17T09:49:30+09:00
Subject: callbacks in ruby and using yield in resursion

Hi,

How do I pass a ruby function as an argument to another ruby function so
that it can be used as a callback?

Also, I have a recursive tree traversing function that I would like to
use yield with. For example:

def run(parent,level)
	....
	yield parent
	....
	run(child,level+1)#yield????????
	....
end

run(root,0){|node|
	puts node.get_name
}

It will not work because i cant use the yield in the recursive call to
run.

Any ideas?

Thanks

Paul