From: Josselin <josselin@...>
Date: 2007-04-27T22:20:13+09:00
Subject: Re: string replacement...

On 2007-04-27 10:01:07 +0200, Alex Young <alex@blackkettle.org> said:

> William James wrote:
>> On Apr 27, 2:29 am, Josselin <josse...@wanadoo.fr> wrote:
>>> I have a string :  str = "/proposal/list/31551"
>>> 
>>> I would like to change the 31551 by another value "9999", but I don't
>>> see whicj method I should use ?
>>> 
>>> str.each  and block ? or str.rindex('/') and concatenating the new value ?
>>> 
>>> tfyh
>>> 
>>> joss
>> 
>> str[/\d+/] = "9999"
> Whoa.  I hadn't seen that syntax before.  Nice.

irb(main):007:0> str = "/proposals/list/31555"
=> "/proposals/list/31555"
irb(main):008:0> str.sub /\d+$/, '9999'
=> "/proposals/list/9999"
irb(main):009:0> str[/\d+/] = "9999"
=> "9999"

don't give the expected result...   Stefano's way  did it .... ;-))

thanks Alex