| # frozen_string_literal: true | |
| source "https://rubygems.org" | |
| gem "activerecord", github: "bodacious/rails" | |
| gem "sqlite3" |
| require "bundler/inline" | |
| gemfile do | |
| gem "benchmark-ips" | |
| gem "jbuilder" | |
| gem "activesupport", require: ["active_support"] | |
| end | |
| class User | |
| attr_accessor :id, :name, :email, :password, :age, :username |
| class String | |
| def palindrome? | |
| clean_string = self.gsub(/[^\w]/, '').downcase | |
| clean_string == clean_string.reverse | |
| end | |
| end | |
| puts "madam".palindrome? # => true | |
| puts "racecar".palindrome? # => true | |
| puts "madam, . ".palindrome? # => true | |
| puts "02/02/2020".palindrome? # => true |
| class Game | |
| attr_accessor :doors | |
| attr_reader :correct_door | |
| def initialize(door_count: ) | |
| chosen_door = (1..door_count).to_a.sample | |
| @doors = door_count.times.map.with_index do |d, i| | |
| Door.new(i+1 == chosen_door) | |
| end | |
| @correct_door = @doors.detect(&:correct?) | |
| end |
| # Examples: | |
| # | |
| # @password = RandomPassword.password | |
| # | |
| class RandomPassword | |
| class << self | |
| delegate :password, to: new | |
| end | |
| class AppDelegate | |
| def window | |
| @window ||= UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds) | |
| end | |
| def application(application, didFinishLaunchingWithOptions:launchOptions) | |
| window.rootViewController = UIViewController.alloc.init | |
| window.makeKeyAndVisible | |
| true |
| class AppDelegate | |
| def hello_world_label | |
| @hello_world_label ||= begin | |
| frame = CGRectMake(20,200,280,40) | |
| label = UILabel.alloc.initWithFrame(frame) | |
| label.text = "Hello world" | |
| label.textColor = UIColor.whiteColor | |
| label.textAlignment = UITextAlignmentCenter | |
| label |
| # Since Sarah is the object of this sentence | |
| "Sarah is a new member, why not send #{@sarah.object} a message?" |
| $hue: 173; | |
| $first-color: hsl($hue, 100%, 50%); | |
| $second-color: complement($first-color); | |
| .first-color { | |
| background: $first-color; | |
| } | |
| .second-color { | |
| background: $second-color; | |
| } |
This was a solution to a problem I was trying to solve on my webiste: how can I arrive at an average value over time, when new data is being provided, without having to store every datum.
I wrote this code to prove to myself that I wasn't crazy, and that this was indeed a valid way to calculate the mean.