From: Gavin Kistner <gavin@...>
Date: 2005-08-19T23:59:17+09:00
Subject: Re: Case Expressions and Classes

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On Aug 19, 2005, at 8:51 AM, Daniel Schierbeck wrote:
> Could anyone explain to me why this isn't working?
>
>     # returns 'no'
>     case :foo.class
>       when Symbol then
>         puts 'yes'
>       else
>         puts 'no'
>     end

Case statements use ===, not == to compare the value against  
arguments. The Class#=== operator matches against the class of an  
object, so you want:

case :foo
     when Symbol then puts 'yes'
     else puts no
end

I know, it's sort of confusing. :|

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