From: Brian Candler <b.candler@...>
Date: 2010-09-08T21:25:26+09:00
Subject: Re: Small improvements ideas ?

Christophe Gimenez wrote:
> Hello, I would like to know how to shorten these two lines
> 
> 1) doit() if my_string && my_string.downcase == 'hello'

doit if /\Ahello\z/i =~ my_string

> 2) doit() if one_var && (my_string =~ /this_regexp/) == nil

> Case 2) I want doit beeing call if regexp don't match. would I use !
> (my_string =~ /this_regexp/) but I don't like using ! because it's not
> very readable and I can't use not keyword in this case

I'm not sure what "one_var" is. If you meant "my_string", then note that 
you can use !~ as the inverse of =~

doit if /this_regexp/ !~ my_string

or simply:

doit unless /this_regexp/ =~ my_string
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