You’re likely to find this pattern in PHP code:
The problem with this pattern and a limitation of PHP, is that PHP does not have named parameters.That is, when I switch the orders or add a new parameter in the middle of the existing code, everything breaks.It breaks because when constructing the Person object, it requires fname, lname, and age in that specific order.
Throughout the tutorial you use Zend’s Dependency Injection container to inject all the dependencies into each class. If you’re interested in using Grip’s powerful IoC container, I’ve included the gist of the changes needed to be made including the equivalency mapping of the objects the tutorial uses.
Automatically semicolon insertion, or do I always have to use semicolons is a hot topic in JS. Experts claim it’s confusing if you don’t add them in, some claim it’s inconsistent. Here is a great article eloquently explaining ASI:
An article on understanding for-in and which properties are iterated:
Equality vs Strict Equals
Last but not least, two book recommendations.
In many Java EE applications you’ll find the following architecture:
The controller layer makes a call to the service layer.The service layer makes a call to the DAO (Data Access Object) layer. Once at the DAO, it’s main responsibility is to make a database call or a web service call and build a simple DTO (Data Transfer Object). Afterwards, the DAO returns the DTO to the service layer, which then the service layer creates a business object with the DTO and finally hands it over to the controller.