From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2005-09-02T00:26:07+09:00
Subject: Re: palindrome finder



> -----Original Message-----
> From: Peter Vanbroekhoven [mailto:calamitas@advalvas.be] 
> Sent: Thursday, September 01, 2005 9:22 AM
> To: ruby-talk ML
> Subject: Re: palindrome finder
> 
> 
> On Fri, 2 Sep 2005, Berger, Daniel wrote:
> 
> > That can be shortened to:
> >
> > IO.foreach("testdict.txt"){ |line|
> >    line.downcase!.chomp!
> >    puts line if line == line.reverse?
> > }
> >
> > Note the chomp!
> 
> Never chain bang methods:
> 
> irb(main):001:0> "hello".downcase!.chomp!
> NoMethodError: private method `chomp!' called for nil:NilClass
>          from (irb):1
> 
> Peter

Oops, indeed.

Dan