mythz

JS Conf slides - 2011

Track A

• Bytes and Blobs by David Flanagan
• Conference Wifi Redux by Malte Ubi
• Sashimi - https://github.com/cramforce/Sashimi
• Run Your JS everywhere with Jellyfish by Adam Christian - http://jelly.io Project
• Fighting Crime and Kicking Apps with Batman.js by Nick Small
• Hello Jo by Dave Balmer - Project - http://joapp.com

mythz

# CoffeeScript With Mixins	

$ ->
  template = _.templateFor '#meal-template'
  meal = new Meal
  _.focusOn '#entry'

  _.onSumbitOf '#entry_form', ->
    meal.add new Dish _.valOf '#entry'
    _.setHtmlOf  'ul#meal', template meal.toJSON()

mythz

class Dish		
	constructor: (rawDescription="") ->
		[all, @title, @price] = @parseRawDescription rawDescription
		@price = new Money @price
		
	parseRawDescription: (rawDescription) ->
		pattern = ///
			([^$]+)       #Title
			(\$\d+\.\d+)  #Price
		///

mythz

describe "Dish", ->

  describe "constructor", ->

    beforeEach ->
      @dish = new Dish 'Sirloin Steak $18.99 mains'

    it "extracts title", ->
      (expect @dish.title).toEqual('Sirloin Steak')

mythz

# Rewrote excellent intro to Backbone.js http://arturadib.com/hello-backbonejs/ in CoffeeScript

$ ->
      Backbone.sync = (method, model, success, error) ->
        success()

      class Item extends Backbone.Model
        defaults:
          part1: 'hello'
          part2: 'world'

mythz

IDbConnectionFactory dbFactory = new OrmLiteConnectionFactory("...", 
	SqlServerOrmLiteDialectProvider.Instance);

Author author = dbFactory.Exec(dbCmd => dbCmd.GetById<Author>(1));

List<Author> rows = dbFactory.Exec(dbCmd => 
	dbCmd.Select<Author>("Username LIKE {0}", "%example.com"));

mythz

#1. install node, npm and coffeescript
#2. >npm install express
#3. >npm install node_redis
#4. >npm install -d

redis = require('redis').createClient()
redis.on 'error', (err) -> console.log "Redis connection error to #{redis.host} : #{redis.port} - #{err}"
app = require('express').createServer()

#create and increment multiple counters in redis, via: http://localhost:3000/counters/my-counter

mythz

# Generate a sequence of numbers:
#  - ordered with the highest values
#  - has a sum of 1
#  - has an optional multiplier to alter the decreasing rate

sequence = (n,m=0) ->

	f = (p,multiplier) -> p * p + multiplier

	s = ""

mythz

using System;

public class File {
	public string Name { get; set; }	
	public string Read() {
		return System.IO.File.ReadAllText(Name);
	}
}

class Program {

mythz

# All CoffeeScript examples from: https://github.com/jashkenas/coffee-script/blob/master/examples/computer_science/

# All Java Script examples from: https://github.com/nzakas/computer-science-in-javascript - Copyright (c) 2009 Nicholas C. Zakas 
#   - Released under https://github.com/nzakas/computer-science-in-javascript/blob/master/LICENSE (*.js copyright headers reduced for clarity)


# Uses a binary search algorithm to locate a value in the specified array.
binary_search = (items, value) ->

  start = 0