thdaraujo

# frozen_string_literal: true

require 'bundler/inline'

gemfile(true) do
  source 'https://rubygems.org'

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem 'rails'

thdaraujo

# how to run: `$ ruby complex_arel_ordering_example.rb`

require 'bundler/inline'

gemfile(true) do
  source 'https://rubygems.org'

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem 'rails'

thdaraujo

Carbon-Neutral Rails

# Gemfile
gem 'patch_ruby'

require 'patch_ruby'

thdaraujo

{
  "mode": "patterns",
  "proxySettings": [
    {
      "title": "EMR SOCKS Proxy",
      "type": 3,
      "color": "#cc8c2a",
      "address": "localhost",
      "port": 8157,
      "proxyDNS": true,

thdaraujo

(defn average [x y] (* 0.5 (+ x y)))

(defn improve [guess x] (average guess (/ x guess)))

(defn square [x] (* x x))

(defn abs [x] (if (< 0 x) x (- 0 x)))

(defn good-enough? [guess x]
  (< (abs (- x (square guess))) 0.0000001))

thdaraujo

def min_abs_sum(a)
  n = a.size
  [1, -1].repeated_permutation(n).map do |s|
    val(a,s).abs
  end.min
end

def val(a,s)
  a.map.with_index{|e, i| a[i] * s[i]}.inject(:+)
end

thdaraujo

def cyclic_rotation(a, k)
  size = a.size
  return a if k == size || k == 0
  
  result = a.clone
  a.each_with_index{|e, i|
    result[(i + k) % size] = e
  }
  result
end

thdaraujo

# Returns the maximum binary gap of a number.
# e.g.: max binary gap of 529 (1000010001 in binary) is 4.
#
def max_binary_gap(n)
  return 0 if (n < 1)
  
  result = n.to_s(2).scan(/10+1/).map{|m|
    m.gsub('1', '').size
  }.select{|gap|
    gap >= 0

thdaraujo

-- see http://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html MAPPING
WITH timezone_lookup(rails_timezone, pg_timezone) 
AS (
  VALUES 
  ('International Date Line West', 'Pacific/Midway'),
  ('Midway Island', 'Pacific/Midway'),
  ('American Samoa', 'Pacific/Pago_Pago'),
  ('Hawaii', 'Pacific/Honolulu'),
  ('Alaska', 'America/Juneau'),
  ('Pacific Time (US & Canada)', 'America/Los_Angeles'),

thdaraujo

pragma solidity ^0.4.17;

contract Inbox{
    string public message;
    
    function Inbox(string initialMessage) public {
        message = initialMessage;
    }
    
    function setMessage(string newMessage) public {