Abraham Sangha abrahamsangha

Strategy Pattern

The strategy pattern is useful for situations where it is necessary to dynamically swap the algorithms used in an application. The strategy pattern is intended to provide a means to define a family of algorithms, encapsulate each one as an object, and make them interchangeable. The strategy pattern lets the algorithms vary independently from clients that use them.

The Strategy Pattern consists of strategies, which are the interchangeable classes which encapsulate variants of a particular algorithm, and the context class, which utilizes these strategies. The context can choose different strategies at runtime depending on the situation.

Here is an example implementation of the Strategy Pattern:

From http://pages.apigee.com/rs/apigee/images/api-design-ebook-2012-03.pdf

Routes

2 base urls per resource ("/dogs" and "/dogs/1234")
Keep verbs out of base URLs -HTTP verbs to operate on collections and elements -Shouldn't need URL deeper than /resource/identifier/resource -Sweep parameters under HTTP ? ("GET /dogs?color=red&state=running&location=park")

Instructions:

Download this application skeleton.
Convert the app to use AJAX.
Add any files you changed to your gist and submit your code.

	# SSL self signed localhost for rails start to finish, no red warnings.

	# 1) Create your private key (any password will do, we remove it below)

	$ openssl genrsa -des3 -out server.orig.key 2048


	# 2) Remove the password

	$ openssl rsa -in server.orig.key -out server.key

	<html>
	<head></head>
	<body>
	<pre style="word-wrap: break-word; white-space: pre-wrap;">
	[{"id":1,"name":"John","created_at":"2013-08-14T20:55:47Z","updated_at":"2013-08-14T20:55:47Z"},{"id":2,"name":"Samantha","created_at":"2013-08-14T20:56:40Z","updated_at":"2013-08-14T20:56:40Z"}]
	</pre>
	</body>
	</html>


	function Cookie(type, bakeTime) {
	this.type = type,
	this.bakeTime = bakeTime,
	this.timeBaked = 0,
	this.status = "Raw"
	};

	Cookie.prototype = {
	updateStatus: function(){

	Create a new repository on the command line

	touch README.md
	git init
	git add README.md
	git commit -m "first commit"
	git remote add origin https://github.com/1neway/quotations.git
	git push -u origin master
	Push an existing repository from the command line

	/* Here is your chance to take over Socrates!


	Spend 10 minutes on each of the following hacks to the socrates website.
	Enter them in the console to make sure it works and then save
	your results here.

	Choose a new pair for each. Add your names to the section you complete.
	*/

	//------------------------------------------------------------------------------------------------------------------
	// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
	//------------------------------------------------------------------------------------------------------------------

	function Animal(kind,legs) {
	this.kind = kind;
	this.legs = legs;
	};

	var Zoo = {

	<!doctype html>
	<html>

	<head>
	<link rel="stylesheet" href="http://cdn.jsdelivr.net/normalize/2.1.0/normalize.css">
	<link rel="stylesheet" href="main.css">
	<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700,800">
	<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Lato:100,900">
	<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/3.0.2/css/font-awesome.min.css">
	</head>