CSC/ECE 517 Summer 2008/wiki1 8 dm
Prototype-based Programming
In Lecture 7, we consider prototype-based programming in Ruby. The example that is given is some what artificial. Can you identify real tasks that are easier with prototype-based programming than with class-based programming? Give the code, at least in outline.
After researching this matter, I hit on the idea of using prototype-based programming to handle linked lists. Since the nodes would need to handle different objects, the first node implemented would serve as a prototype for nodes that contain different attributes or more complicated logic. Any container or pointer class that has to deal with a number of functions, you can either use the same
Ex. class LinkNode attr_reader :name, :next, :value def initialize(name, next,value) @name, @next, @value = name, next, value end def getNext next end end node1 = LinkNode.new('Dave',nul,nul) node2 = LinkNode.new('John,nul,nul) module StringNode def isEmptyString? if value == nul true else false end end node1.extend(StringNode)