In Haskell, I believe that it is possible to alias a type in such a way that the compiler does not allow references between the aliased type and the unaliased type. According to this stack overflow question, one can use Haskell's newtype like so: newtype Feet = Feet Double newtype Cm = Cm Double where Feet and Cm will behave like Double values, but attempting to multiply a Feet value and a Cm valu
Ok, so I've been refactoring my code in my little Rails app in an effort to remove duplication, and in general make my life easier (as I like an easy life). Part of this refactoring, has been to move code that's common to two of my models to a module that I can include where I need it. So far, so good. Looks like it's going to work out, but I've just hit a problem that I'm not sure how to get arou
I inherited a GPL project which I'm trying to improve. I know of an MIT library that could really help me improve this project. I know its developer personally and I read his blog, and he's made it clear on several occasions that he likes MIT and Apache licenses. My questions: Do I have to tell him that I'm using his library in a GPL project? Is it ok for my GPL project to interface with his MIT
How can I set default value in ActiveRecord? I see a post from Pratik that describes an ugly, complicated chunk of code: http://m.onkey.org/2007/7/24/how-to-set-default-values-in-your-model class Item < ActiveRecord::Base def initialize_with_defaults(attrs = nil, &block) initialize_without_defaults(attrs) do setter = lambda { |key, value| self.send("#{key.to_s}=", value) unless !attrs.nil? && attr
You want to use the UniqueId (UID) for the messages. This is specifically why it was created. You will want to keep track of the last UID requested, and then, to request all new messages you use the message set "[UID]:*", where [UID] is the actual UID value. For example, lets say the last message feteched had a unique id of "123456". You would fetch 123456:* Then, discard the first returned messag
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