Objects, Metaobjects, & Protocols in ES-5
About the Book
Functions are very interesting building blocks for programs, because they compose: It’s easy to build a programming style based on making many small things that can be combined and recombined to make bigger things.
Go ahead, read it for yourself. It’s free.
- Taking a page out of LiSP
The Big Idea
- Data Structures
- Encapsulating State with Closures
- Composition and Extension
- This and That
- What Context Applies When We Call a Function?
- Extending Objects
- Records and Value Objects
- Hiding Object Properties
Instances and Prototypes
- Prototypes are Simple, it’s the Explanations that are Hard To Understand
- Binding Functions to Contexts
- Object Methods
- Extending Objects with Delegation
- What is a Method?
- The Letter and the Spirit of the Law
- Composite Methods
- Method Objects
- Predicate Dispatch
- Why Metaobjects?
- Mixins, Forwarding, and Delegation
- Later Binding
- Conflict Resolution Policies
- Delegation via Prototypes
- Singleton Prototypes
- Shared Prototypes
- Metaobjects and “self”
- Interlude: Greenspun’s Tenth Rule
Encapsulation and Composition
- The Encapsulation Problem
- Encapsulation for Metaobjects
- Encapsulation and Self
- Closing Encapsulated Objects
- Decoupling with Partial Proxies
- Composing Metaobjects
- Transforming and Decorating Metaobjects
- Playing Well with Classes
Inheritance, Ontologies, and Semantic Types
- Class Hierarchies
- Getting the Semantics Right
- Structural vs. Semantic Typing
- Interlude: “is-a” and “was-a”
- The Expression Problem
- Multiple Dispatch
- The Class Class
- Class Mixins
- Well, Actually…
Source Code Examples
- Object Recipes
- Greenspun’s Tenth Rule
- Encapsulation and Composition
- Utility Functions
- Copyright Notice
- About The Author
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