From: Wayne Blair <wayne.blair@...>
Date: 2001-07-16T11:53:03+09:00
Subject: [ruby-talk:17899] Re: regular expressions and string#sub!


"Ernest Ellingson" <erne@powernav.com> wrote in message
news:jxr47.40933$yb3.1764779@e420r-atl1.usenetserver.com...
> This particular code yields some strange results.
> I'm using ruby 1.63 on Win2k
>
> x="aren't"
> z="\\\'"
> puts x         =>  aren't  (expected)
> puts z         =>  \'    (expected)
> x.sub!(/\'/,z)  =>   arentt
> puts x        =>   arentt   (huh?)
>
>
> Ernie
>
>

Hi,

x.sub! mutates x, whereas x.sub returns the result without mutating x.

regards,

Wayne