Jberczel

Command Line Crash Course

Related tutorials

• http://cli.learncodethehardway.org/book/
• https://www.codecademy.com/courses/learn-the-command-line

Cheatsheets

• Linux auf einem Blatt
• Fasd

Jberczel

require_relative 'friendly_date_ranges'
require 'minitest/autorun'

class FriendlyDatesTest < Minitest::Test
  def test_teen_day_formatting
   input   = '2015-07-11 2015-08-12'
   results = FriendlyDates.new(input)
   assert_equal '11th', results.date1.day
   assert_equal '12th', results.date2.day
  end

Jberczel

class BiDailyScheduler < HerokuScheduler
  def should_run?
    (Time.now.hour % 12) == hour
  end
end

Jberczel

class Post < ActiveRecord::Base
  extend PostUtils
  default_scope { order(:id) }
end

Jberczel

class Post < ActiveRecord::Base
  extend PostUtils
  default_scope { order(:id) }
end

Jberczel

# Imagine you have a call center with three levels of employees: fresher, technical lead (TL), 
# product manager (PM). There can be multiple employees, but only one TL or PM
# An incoming telephone call must be allocated to a fresher who is free. If a fresher
# can’t handle the call, he or she must escalate the call to technical lead. If the TL is
# not free or not able to handle it, then the call should be escalated to PM. Design the
# classes and data structures for this problem. Implement a method getCallHandler().

class CallHandler
  attr_reader :product_manager, :tech_lead, :freshers, :calls

Jberczel

class FloorPlan
  attr_reader :input, :layout, :rows, :cols

  EMPTY   = '.'
  VISITED = '-'

  def initialize(file)
    @input  = format(file)
    @layout = format(file)
    @rows   = @layout.size

Jberczel

require_relative 'other_word_problem'
require_relative 'word_problem'

require 'benchmark'
TEST_COUNT = 10000


Benchmark.bmbm do |b|
  b.report("myWordy") do 
    TEST_COUNT.times do |i|

Jberczel

Node = Struct.new(:value, :next)

class LinkedList
  def initialize(*values)
    @head = Node.new(values.shift, nil)
    values.each { |v| add(v) }
  end

  def add(value)
    current = @head