From: "Radosław Bułat" <radek.bulat@...>
Date: 2009-02-06T02:10:33+09:00
Subject: Re: Array#choice always produce the same sequence

On Thu, Feb 5, 2009 at 2:42 PM, Stefano Crocco <stefano.crocco@alice.it> wrote:
> p [1,2,3,4].choice
>
> ruby test.rb
> => 4
> ruby test.rb
> => 4
> ruby test.rb
> => 4
>
> And so on. If at the beginning of the script I add a call to Kernel#srand
> (without arguments), I get the correct behaviour, that is a different number
> every time the script is run.


It looks like it was fixed in ruby1.9 (notice that #choice has been
renamed to #sample):

ruby1.9.1 -e "p [1,2,3,4].sample"
4
ruby1.9.1 -e "p [1,2,3,4].sample"
1
ruby1.9.1 -e "p [1,2,3,4].sample"
2
ruby1.9.1 -e "p [1,2,3,4].sample"
3
ruby1.9.1 -e "p [1,2,3,4].sample"
1
ruby1.9.1 -e "p [1,2,3,4].sample"

File a bug or ask in ruby-core if it's desired behavior.

-- 
Pozdrawiam

Rados³aw Bu³at
http://radarek.jogger.pl - mój blog