From: "Wolfgang Nádasi-Donner" <wonado@...>
Date: 2007-06-29T08:04:35+09:00
Subject: Name of Classes

Moin, moin!

During a discussion about dynamic class construction in german 
Ruby-Forum I recognized strange behavior of the name associated to the 
class. Example (Ruby OneClickInstaller-186-25):

 >>>>> snip >>>>>

irb(main):001:0> a = Class.new
=> #<Class:0x30f00c0>
irb(main):002:0> a.new.class
=> #<Class:0x30f00c0>
irb(main):003:0> A = a
=> A
irb(main):004:0> AA = a
=> A
irb(main):005:0> AA.new.class
=> A
irb(main):006:0> a.new.class
=> A
irb(main):007:0> class Object; remove_const(:A); end
=> A
irb(main):008:0> A
NameError: uninitialized constant A
        from (irb):8
irb(main):009:0> a.new.class
=> A
irb(main):010:0> class A
irb(main):011:1>   def hi
irb(main):012:2>      puts "hi!"
irb(main):013:2>   end
irb(main):014:1> end
=> nil
irb(main):015:0> A.new.hi
hi!
=> nil
irb(main):016:0> A.new.class
=> A
irb(main):017:0> a
=> A
irb(main):018:0> a.new.class
=> A
irb(main):019:0> a.new.hi
NoMethodError: undefined method `hi' for #<A:0x30d4cbc>
        from (irb):19

 >>>>> snap >>>>>

For me it looks like an error that the name "A" will still be actual 
after the deletion of the constant.

Wolfgang N�dasi-Donner