From: Warren Seltzer <warrens@...>
Date: 2005-10-25T23:49:14+09:00
Subject: Comparing Classes with Case ?

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The following failure surprised me:
 
Version 1:
 
irb(main):068:0> "hi".class == "hi".class
=> true
irb(main):069:0> "hi".class === "hi".class
=> false
 
 
Version 2:
 
irb(main):055:0> case "whatever".class
irb(main):056:1> when String
irb(main):057:1>   p "it is a string"
irb(main):058:1> else
irb(main):059:1*  p "it is not a string"
irb(main):060:1> end
"it is not a string"
 
What it amounts to is you can't use case/when to test for class.  This is a HUGE LOSE.
The pickaxe book .chm says YOU CAN do it.  I'm using ruby 1.8.2
 
Warren
 

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