From: "F. Senault" <fred@...>
Date: 2006-10-06T04:30:07+09:00
Subject: Re: question mark at end of method name

Le 5 octobre 2006 � 21:11, py a �crit :

> i've seen what ! does....what is ?  

Those are conventions.  ? and ! have no real meaning in that context for
the ruby parser in itself.  

The first just usually suggests the method called is a query type which
returns a boolean type, while the second usually means the method will
have some destructive or important effect on the object being
manipulated ; for instance, s.downcase will return a copy of s in lower
case, while s.downcase! will actually modify s in place.

Fred
-- 
Trapped in purgatory  A lifeless object, alive  Awaiting reprisal  Death
will be their acquisition  The sky is turning red  Return to power draws
near   Fall into me, the sky's crimson tears   Abolish the rules made of
stone                                            (Raining Blood, Slayer)