From: Thomas Uehlinger <uehli@...>
Date: 2003-12-29T19:59:54+09:00
Subject: Re: An addition to Array (or Enumerable)?

On Mon, 2003-12-29 at 02:51, Dave Thomas wrote:
> On Dec 28, 2003, at 18:15, Gennady wrote:
> 
> > Strange, ri 1.8b claims that Array#select([anIndex]*) may be used, 
> > however I got this error:
> 
> It changed...  :)
> 
> The new ri has it right:
> 
> 
> dave[ruby/ruby 17:06:31] ri -f bs Array.select
> ----------------------------------------------------------- Array#select
>       array.select {|i| block } -> an_array
> ------------------------------------------------------------------------
>       Invokes the block passing in successive elements from arr,
>       returning an array containing those elements for which the block
>       returns a true value (equivalent to Enumerable#select).
> 

The text is ok.

>          a = %w{ a b c d e f }
>          a.select(1, 3, 5)               #=> ["b", "d", "f"]
>          a.select(1, 3, 5, 7)            #=> ["b", "d", "f", nil]
>          a.select(-1, -3, -5, -7)        #=> ["f", "d", "b", nil]

But these examples don't work in 1.9.0

>          a.select {|v| v =~ /[aeiou]/}   #=> ["a", "e"]
> 

This one is ok again.

-- Thomas Uehlinger