JavaScript Spessore - Leanpub (2014) PDF - GOLU

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Title: JavaScript Spessore
Author: raganwald
Length: 340 pages
Edition: 1
Language: English
Publisher: Leanpub
Publication Date: 2014-06-24



Description:
JavaScript Spessore celebrates “Thinking in Objects,” starting with the basics, building upon them, and then exploring new ways to think about object-oriented programming.
To truly think in objects, you have to liberate yourself from thinking in terms of any one language’s features, because there is more than one way to “do” objects and object-oriented programming. Let’s compare a few other languages to JavaScript:
Smalltalk has objects, but a Smalltalk object’s methods and instance variables are distinct from the contents of a Smalltalk container like a dictionary or array. JavaScript’s objects are dictionaries, and an object’s methods and instance variables are the same thing as its contents.
Ruby has classes, modules, the metaclasses, and eigenclasses. JavaScript just has objects that are related to each other either with prototype chaining or as instance values.
When you invoke a method in Common Lisp, You may also be invoking multiple “before,” “after,” or “around” demons in addition to the method handler. In JavaScript, each method is handled by exactly one function.
Java’s methods cannot be added to or removed from classes once their bytecodes have been loaded. JavaScript’s methods can be added and removed at any time.



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