revdan

class BeerSong
  attr_reader :number

  def verse(number)
    @number = number
    take_it_away_guys!
  end

  def verses(first, last)
    first.downto(last).map { |x| verse x }.join("\n") << "\n"

revdan

class BillSplitter
  attr_reader :total, :people, :tip

  def initialize(options={})
    @total = options.fetch(:total).to_f
    @people = options.fetch(:people, 2)
    @tip = options.fetch(:tip, 10)
  end

  def calculate

revdan

YouTube now defaults to an HTML5 player in modern browsers. While you can choose some varying playback rates from within their interface, this bookmarklet allows you to enter a decimal amount between 0.3 - 3.0 (or slightly wider if you don't mind losing audio).

Add this to the url of your bookmark: javascript: (function(){document.getElementsByTagName('video')[0].playbackRate=prompt('Playback Rate:');})();

Try it with 0.5 on this video for a drunk DHH 🍻

Also works beautifully with @vzaar, and probably many other HTML5 players.

revdan

class Wildcards < Struct.new(:hash, :definitions)
  def replace(a = hash, b = definitions)
    a.merge(b) do |_, left, right|
      if left.is_a? Hash
        compare(left, right)
      else
        left == '*' ? right : left
      end
    end
  end

revdan

class BookOrderer
  attr_accessor :copies, :price

  DEFAULT_PRICE = 99.freeze

  def initialize(args={})
    @copies = args[:copies].to_i
    @price = (args[:price].to_i.zero?) ? DEFAULT_PRICE : args[:price].to_i
  end

revdan

// This example requires the apache commons-codec library
//   (http://commmons.apache.org/codec)
import org.apache.commons.codec.digest.DigestUtils;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

public class VzaarUssTokens {