From: nobu.nokada@...
Date: 2003-06-24T02:40:25+09:00
Subject: Re: [bug] Array#unshift() zero arguments

Hi,

At Tue, 24 Jun 2003 01:39:15 +0900,
Simon Strandgaard wrote:
> irb(main):001:0> [].unshift()
> IndexError: index -1 out of array
>         from (irb):1:in `unshift'
>         from (irb):1
> irb(main):002:0> [].unshift(*[])
> IndexError: index -1 out of array
>         from (irb):2:in `unshift'
>         from (irb):2
> irb(main):003:0> [].push(*[])
> => []

Also unshifting without arguments clobbers last element.

  $ ruby -e 'p [1].unshift()'
  [nil]

-- 
Nobu Nakada