From: Bruce Williams <bruce@...>
Date: 2002-10-22T06:27:19+09:00
Subject: Re: Difference between inject and reduce

On Monday 21 October 2002 03:34 pm, Travis Whitton wrote:
> Also, when
> using ruby in a functional style is there a better way to get the
> traditional car and cdr of an Array than array.first, array[1,
> array.length]? I understand that an array is not the same thing as a
> "list", but I'm just thinking convience here.

I'd just change it to: car, cdr = array[0], array[1..-1] # for brevity
Of course, you could use partition, but that's fairly heavy handed.

If I needed this often enough I'd add...
class Array
	def car; first; end
	def cdr; self[1..-1]; end
end
... for convenience.

Any other suggestions?

~ Bruce