ciscou

class Fixnum
  @@fibo_cache = Hash.new { |h, k| h[k] = k < 2 ? k : h[k-2] + h[k-1] }

  def fibo
    @@fibo_cache[self]
  end
end

puts (0..500).map { |n| "#{n.to_s.rjust(3, ' ')} => #{n.fibo}" }

ciscou

ciscou

class Rubik
  attr_reader :edges, :corners

  def initialize
    @edges = {
      :position => (1..12).to_a,
      :orientation => [0] * 12
    }
    @corners = {
      :position => (1..8).to_a,

ciscou

class A
  def self.foo ; "foo" ; end
  def self.bar ; "bar" ; end
end

class B
  def self.foo ; "another foo" ; end
  def self.method_missing(method_id, *args, &block)
    if A.respond_to?(method_id)
      A.send(method_id, *args, &block)

ciscou

import java.io.File;

import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.validation.*;

/*
 * Usage: download xsd's and sitemap
 *   $ wget http://www.google.com/schemas/sitemap-news/0.9/sitemap-news.xsd
 *   $ wget http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd

ciscou

#!/usr/bin/env ruby

# This is a git hook that checks commit messages for validity
# This file must live in your project's .git/hooks/ folder
# and have execution permission

message_file = ARGV[0]
message = File.read(message_file)

def valid_commit_message?(message)

ciscou

class DateRange
  def initialize(from, to, step)
    @from, @to, @step = from, to, step
  end

  def each
    current = @from
    while current < @to do
      yield(current)
      current += @step

ciscou

module ActiveRecord
  class Base
    def self.scope(name, callable)
      define_singleton_method name do
        options = callable.respond_to?(:call) ? callable.call : callable
        puts "Fetching records with options #{options.inspect}"
      end
    end
  end
end

ciscou

2.0.0-p451 :016 >   def omg(foo: 42, bar: "hello world!")
2.0.0-p451 :017?>     puts [foo, bar].inspect
2.0.0-p451 :018?>   end
 => nil 
 
2.0.0-p451 :019 > omg
[42, "hello world!"]
 => nil 
 
2.0.0-p451 :020 > omg(1, "one")

ciscou

is 1 == 1? <%= yesno 1 == 1 %>
is 1 == 2? <%= yesno 1 == 2 %>