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From: Robert Klemme <shortcutter@googlemail.com>
Newsgroups: comp.lang.ruby
Subject: Re: question about a particular routing
Date: Tue, 21 Feb 2012 23:02:37 +0100
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On 21.02.2012 21:30, gerberdata wrote:
> I found this method definition and I was wondering if someone can
> explain it to me or how to use it.
>
> def [](method)
>       self.__send__(method.to_sym)
>     rescue NoMethodError
>       nil
> end

That method allows for conveniently invoking methods by name without 
throwing an error if the method does not exist.  You could invoke method 
"foo" by doing obj["foo"] and do not need to worry for NoMethodError - 
you'll just get nil back.

Oh, and btw "self." is superfluous.

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/