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require 'benchmark'

def fib_vanilla(n)
  return n if (0..1).include?(n)
  fib_vanilla(n - 1) + fib_vanilla(n - 2)
end

fib_memoized = Hash.new { |numbers, index|
  numbers[index] = fib_memoized[index - 2] + fib_memoized[index - 1]
}.update(0 => 0, 1 => 1)

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Making an office dashboard with a Raspberry Pi

Steps taken with a basic Raspbian install.

Default username/password is pi/raspberry.

SSH access is enabled by default; run ifconfig on the Pi to find the IP address to connect to.

Bring everything up-to-date:

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List of NZ Beers worth sampling

An incomplete list.

Sessionable

• Emerson's 1812 (many supermarkets)
• Emerson's Bookbinder (good “session” ale)
• Cassel's Best Bitter (from The Brewery)
• Beer Baroness Lady Danger (from Pomeroy's)

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SinOsc s => dac;

while(true) {
  100::ms => now;
  Std.rand2f(30.0, 1000.0) => s.freq;
}

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// Kids, this is a bad idea. Don't try this at home.
//
// npm install csv-spectrum
//
 
var CSV_REGEX = /^(([^,"]+)|("([^"]|"")*"))(,(([^,"]+)|("([^"]|"")*")))*$/;
 
var spectrum = require('csv-spectrum'),
    passed = 0,
    failed = 0;

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<?xml version="1.0" encoding="UTF-8"?>
<json:object
    xsi:schemaLocation="http://www.datapower.com/schemas/json jsonx.xsd"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:json="http://www.ibm.com/xmlns/prod/2009/jsonx">
  <json:string name="reply">Here's how you would encode a reply to your tweet!</json:string>
</json:object>

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require 'dream_cheeky'
require 'nokogiri'
require 'httparty'

DreamCheeky::BigRedButton.run do
  open do
    reddit_home_page = HTTParty.get('http://www.reddit.com/')
    doc = Nokogiri::HTML(reddit_home_page)
    link_elements = doc.css('.link')

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class MilesConverter
  CONVERSIONS = {
    km: 1.6,
    m: 1.6 * 1000,
    cm: 1.6 * 1000 * 100,
    mm: 1.6 * 1000 * 100 * 10,
    whatever: 103321
  }

  attr_reader :miles

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class DonutShop
  PRICES =
    pink: 3.30
    glazed: 5.00
    sprinked: 4.40

  constructor: (@name, @flavoursome = true) ->
    @todaysRevenue = 0

  serve: (customers) ->

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source 'https://rubygems.org'

gem 'rack'