From: Carlos <angus@...>
Date: 2001-12-17T00:02:08+09:00
Subject: [ruby-talk:28686] Re: using ranges with rand

> With ruby's great range feature, I would think it'd be possible to use
> rand in conjunction with them...rather than doing something like
> rand(100)+1000 to get to the desired starting point...i can think of
> varous methods for achieving this, just wondering if there was a ruby
> way about it :-)

Here's a slow approach, I don't know about its ruby-wayness(?) :)

-----
class Range
        def rand
                r = first
                Kernel::rand(length).times do
                        r = r.succ
                end
                r
        end
end

(100..1000).rand	# => 328
('abcd'..'cdba').rand	# => "ccge"
-----

But it's (randomly) very slow with big ranges.