From: Johan Veenstra <johan.veenstra@...>
Date: 2008-02-14T21:02:01+09:00
Subject: Re: How can I write this method in one line?

------=_Part_460_30435173.1202990514745
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

irb(main):033:0> num = 10
=> 10

irb(main):037:0> "%s"*num % (1..num).to_a
=> "12345678910"

irb(main):036:0> "%4s"*num % (1..num).to_a
=> "   1   2   3   4   5   6   7   8   9  10"

irb(main):035:0> "%-4s"*num % (1..num).to_a
=> "1   2   3   4   5   6   7   8   9   10  "

irb(main):034:0> (["%4s"]*num).join("|") % (1..num).to_a
=> "   1|   2|   3|   4|   5|   6|   7|   8|   9|  10"

2008/2/14, Sebastian Hungerecker <sepp2k@googlemail.com>:
>
> Jigar Gosar wrote:
> > def gen_indices_string num
> >   string = ""
> >   num.times{|i| string<<(i+1).to_s}
> >   return string
> > end
> >
> > I have a feeling that stuff can be written in a single line using some
> > of the ruby API. Can anyone help?
>
> (1..num).to_a.join
> or
> (1..num).inject("") {|str,i| str << i.to_s}
>
> --
> Jabber: sepp2k@jabber.org
> ICQ: 205544826
>
>

------=_Part_460_30435173.1202990514745--