Gotcha bits, taken from obj-j tutorial.
- Objective-J has two types of objects, native JavaScript objects and Objective-J objects
- The beginning of a class is always the keyword @implementation, followed by the class name
- Each method signature starts with either a dash (-) or a plus (+)
- Dashes are used for instance methods
- One pattern you’ll find in Objective-J and Cappuccino is the idea of passing a method as an argument to another method
- The alloc class method is analogous to the “new” keyword in many languages
- The init instance methods are like the constructors in those languages, in that they perform initialization on the newly created instance
- Some classes specify their own custom init method
- “self” is the Objective-J equivalent to JavaScript’s “this”
- There are two types of import statements. The angle brackets indicate framework code, while the quotation marks indicate local project code
- JavaScript is garbage collected, and so is Objective-J, so you won’t see any calls to retain or release in Objective-J code as you would in Objective-C
- Categories allow you to add methods to a class without needing to create a new subclass or modify the class’s source code
- The syntax for the category is @implementation, followed by the class you’re adding to, followed by the name of your category in parentheses
- Technique called toll-free bridging which allows any JavaScript object like an array or a string to act both as a JavaScript object and a Cappuccino object at the same time
- Variables not specifically declared with var become globals
