If you're working with an XCode application, either iOS or MacOS, and want to do a completely clean build and delete the cache, it's simple. Execute this command from the command line.. defaults delete your.apps.bundle.id Where "your.apps.bundl...

Here is a code snippet that demonstrates how to set up a __ManyToMany through__ relationship in Django. In Rails, the equivalent would be called a __has_many through__ association. If you set the __through__ argument on the ManyToManyField, Django wil...

How to validate uniqueness in a :has_many :through relationship with Ruby on Rails. You'll need three models in this example List, Subscriber and ListSubscriber. A list has many subscribers and a subscriber has many lists. Simple enough. Running the follo...

https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js That is the link to the jQuery source hosted by Google on their CDN. It's probably already cached on client machines so it should be as fast as is possible! You can read more/use other Java...

gem server will boot up documentation on port 8808 by default pass it the -p flag followed by the port number to change. gem server -p3000