From: Josh Cheek <josh.cheek@...>
Date: 2010-03-01T12:25:05+09:00
Subject: Re: Array#join using to_a if defined

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On Sun, Feb 28, 2010 at 12:53 PM, Benoit Daloze <eregontp@gmail.com> wrote:

> Hi,
>
> I got recently an unexpected result using Array#join.
>
> In my thoughts, Array#join is sth like adding the separator between every
> element#to_s.
>
> That is what seems to happen when there is no any #to_a method defined in
> an
> element:
>
> For example,
> class N < Struct.new(:n)
>  def to_s
>    'to_s'
>  end
> end
>
> [N.new(2), N.new(3)].join(' ') #=> "2 3" and not "to_s to_s"
>

I got "to_s to_s" in 1.8.6, 1.8.7, and 1.9.1

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