From: Michael Morin <uzimonkey@...>
Date: 2008-11-07T13:38:34+09:00
Subject: Re: is a "?" at end of method name only for boolean result?

Greg Hauptmann wrote:
> when should I use ? at the end of a method name?.  for queries that
> return (a) boolean value, or (b) any return values? ie any method that
> returns data
> 
> Thanks
> 

Is the method asking a question or query?  By the convention, the method 
should has a question or query (some_thread.alive? or 
some_string.empty?) and it should work in an if statement.  This is only 
a convention though, but it could be a little confusing if bend the 
rules a little.