From: Robert Dober <robert.dober@...>
Date: 2008-12-27T19:08:48+09:00
Subject: Re: Are all Ruby built-in objects thread safe?

On Sat, Dec 27, 2008 at 10:04 AM, Simon Krahnke <overlord@gmx.li> wrote:
> * Robert Klemme <shortcutter@googlemail.com> (11:23) schrieb:
>
>> if hash.contains_key? k
>>   dat = hash[k]
>> else
>>   dat = create_dat(k)
>>   hash[k] = dat
>> end
>
>> [...]
>
>> So in this case you need a lock around the _complete_ block of code.
>> (Note, the method level lock would work if using a Hash with a default
>> block, but this solves only a small portion of the cases.)
>
> If Hash had a method get_with_default that took a default value or a
I believe you mean
   "get and assign with default"
because IIRC there is a get_with_default, it is simply called
    Hash#fetch
R.