radarek

Solution (code golf) to the "Coat of Many Colours" challenge

Challenge: Coat of Many Colours

Note Do not copy the solver code directly fron the website. It contains binary data (unprintable characters), thus copying and pasting will probably corrupt data. Use generator (see belo) or download solver to the disk and then run.

Usage

Generating solver:

radarek

require 'benchmark'

N = 1_000_000

def dowork
  N.times do
    a = "1"
  end
end

radarek

wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add -
sudo apt-get install apt-transport-https
echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list
sudo apt-get update
sudo apt-get install sublime-text

radarek

class Hello {
  public static String helloString = "Hello World!";

  public static void main(String[] args) {
    System.out.println(helloString);
    foo();
  }

  public static void foo() {
    System.out.println("Foo called");

radarek

What is the problem?

How to execute file in irb/pry session and use its local variables.

https://www.reddit.com/r/ruby/comments/43nlxh/how_do_you_read_commands_from_file_in_a_pry/

IRB

$ irb

radarek

def count_nodes(label)
  before = ObjectSpace.count_objects
  yield
  after = ObjectSpace.count_objects

  puts "  #{label} created T_NODE: %d" % (after[:T_NODE] - before[:T_NODE])
end

class MyClass
  include Enumerable

radarek

defmodule ExUnit.Lets do
  defmacro __using__([]) do
    quote do
      import ExUnit.Lets
    end
  end

  defmacro let(name, expr) do
    if match?([do: _], expr) do
      expr = expr[:do]

radarek

See https://www.youtube.com/watch?v=4_RJu_TrqO0&feature=youtu.be&t=8h6m40s

$ ruby dilute.rb fib.rb
def fi  n
  if n < 3
    1
  else
    fib(n-1  +  ib(n
 end

radarek

require "spec_helper"

describe Solver do
  let(:solver) { subject }

  describe "#number_to_words" do
    it "converts given number to its words representation" do
      expect(solver.number_to_words(0)).to eq "zero"
      expect(solver.number_to_words(1)).to eq "jeden"
      expect(solver.number_to_words(2)).to eq "dwa"

radarek

class Bob
  def hey(message)
    if empty?(message)
      "Fine. Be that way!"
    elsif yelling?(message)
      "Woah, chill out!"
    elsif question?(message)
      "Sure."
    else
      "Whatever."