> From: uncutstone wu
> Sent: Monday, June 19, 2006 9:54 AM
> Subject: Is it more convenient to have a random_each in ruby stdlib?
> 
> I found it may be a common case that we need randomly 
> enumerate elements 
> in a array or some other collections.
> Please take a look at the very simple snippet of code below:
> 
> class  Array
> 	def random_each
> 		a = self.dup
> 		n = len = self.length
> 		len.times do
> 			index = rand(n)
> 			yield a[index]
> 			a.delete_at(index)
> 			n -= 1
> 		end
> 	end
> end
> 
> a = [1,2,3,4,5,6,7]
> a.random_each {|e| print e , ' '}
> 
> result:
> 7 1 6 2 4 3 5
> 
> I don't whether it is proper to put this kind of simple but useful 
> utility in the standard library of ruby.
> 
> Thanks.
> 
> uncutstone

I think it's a little bit to simple to be put in the standard lib.

a.sort_by{rand}.each {|e| print e , ' '}

cheers

Simon