From: Dan Zwell <dzwell@...>
Date: 2007-08-24T23:53:48+09:00
Subject: Re: something I just found out, am sharing (:newbish)

Pe�a wrote:
> From: Dan Zwell [mailto:dzwell@gmail.com] 
> # &&= is good for making sure a group of things are all true:
> # result = true
> # expressions.each {|expr| result &&= expr}
> 
> just in case you've forgotten, Dan, 
> 
>    expressions.all?
> 
> 
> kind regards -botp
> 
> 

Pe�a,

Good point--my example wasn't very good idiomatic Ruby. However, there 
are still good occasions to use &&= when your expressions are not in a 
convenient list. Example: I have a backup script written in Ruby that 
runs several system commands. I just don't want to put all the commands 
in a list. So I use &&= to keep track of the state of success of the 
whole script.

Dan