From: Christoph <chr_mail@...>
Date: 2005-05-22T17:21:45+09:00
Subject: Re: join not in Enumerable

Jim Weirich schrieb:

>
>  def join(sep='')
>    inject(nil) { |a, b|
>      a ? (a << sep << b.to_s) : "#{b}"
>    }
>  end
>  
>
It's
p ([].join) # ""

so this should be

def join(sep="")
   if sep == ""
      inject('') { |a, b|
        a << b.inspect
      }
    else
      inject('') { |a, b|
        a << sep << b.inspect
      }
   end
end

/Christoph