From: Robert Klemme <shortcutter@...>
Date: 2007-05-21T03:10:08+09:00
Subject: Re: "Crystallizing" Objects

On 20.05.2007 18:12, fud wrote:
>> [growinghash.rb]require 'delegate'
>>
>> class GrowingHash < DelegateClass(Hash)
>>   def initialize(*a,&b)
>>     super(Hash === a[0] ? a[0] : Hash.new(*a,&b))
>>   end
>>
>>   def store(k,v)
>>     raise ArgumentError, "Key already set: #{k.inspect}" if key? k
>>     super
>>   end
>>
>>   alias []= store
>>
>>   def set_if_unset(k,v=nil)
>>     store(k, block_given? ? yield : v) unless key? k
>>   end
>> end
> 
> Is this intended to be thread-safe?

Of course not. (see my posting)

Kind regards

	robert