From: Christophe Grandsire Date: 2005-11-03T21:30:35+09:00 Subject: Re: include Selon Alexander Fleck : > Hi, > is the Ruby-'include' equal to a C++-'using' statement? Meant for namespace > issues. Or does it have a bigger result? > Thanks, > Alex. > "include" is used to mix in a module into a class. It has nothing to do with namespaces, but is rather a way to quickly add functionality to a class beyond what is given by its superclass without resorting to multiple inheritance. Mixins are in a way similar to Java interfaces, except that they contain fully-fledged methods, rather than just method signatures. Note that Ruby 1.9 (the development version) now has the "using" keyword for namespaces too (check out: http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/6a732d353724f801/de6275a6a51b6bcd#de6275a6a51b6bcd). But since Ruby 1.9 is highly experimental, it might change before it becomes the stable Ruby2. -- Christophe Grandsire. http://rainbow.conlang.free.fr It takes a straight mind to create a twisted conlang.