ynonp

defmodule Day1 do
  def read_input do
    File.read!("input/day1.txt")
    |> String.split("\n", trim: true)
    |> Enum.map(&String.to_integer/1)
  end

  def part1 do
    values = read_input()
    for a <- values, b <- values, a + b == 2020, do: a * b

ynonp

text = "some string (with parentheses (and also inner parentheses)) (yay) hi"

stack = []
for i in range(len(text)):
    char = text[i]
    if char == "(":
        stack.append(char)
    elif char == ")":
        stack.pop()
        if len(stack) == 0:

ynonp

#!/usr/bin/env ruby

require 'csv'
require 'json'

def print_as_json(data)
  $/ = "\n"
  csv = CSV.new(data, :headers => true, liberal_parsing: true)
  puts csv.to_a.map {|row| row.to_hash }.to_json
  $/ = "---===---"

ynonp

from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from ui_mainwindow import Ui_MainWindow
from functools import partial
import sys


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

ynonp

Python Labs

1. Write a countdown timer that counts for 120 seconds (ticks every second), printing the remaining seconds to wait in each tick

2. Change your countdown timer to show remaining time like a watch, i.e.: 2:00 1:59 1:58 ... 1:20

ynonp

(defn power
  [serial x y]

  (let [
        rack-id (+ x 10)
        ]

    (-
     (Math/floor

ynonp

(ns aoc2018.day5
  (:require [clojure.string :as s]))

(def letters (map char (concat (range 97 123))))

(def reactions
  (re-pattern
   (s/join "|"
         (for [letter letters]
           (str

ynonp

(ns aoc2018.day4
  (:require [clojure.math.combinatorics :as combo]))

(defn add-guard-sleep-time
  [guards-map current-guard last-sleep-time line]
  (let [
        wake-up-time (first (drop 1 (re-find #"\d+-\d+-\d+ \d+:(\d+)" line)))
        nwake-up-time (Integer/parseInt wake-up-time)
        nsleep-time (Integer/parseInt last-sleep-time)]

ynonp

rails new feeder --webpack=react --skip-turbolinks

--- Setup

1. Install devise and create a user model
  * rails generate devise:install
  * rails generate devise User

2. Create a Post model:
  ./bin/rails g scaffold post user:references text:text color:string

ynonp

Ruby

Video Tutorials with Hebrew Notes

https://my.schooler.biz/s/1765/ruby/1/

Demo Codes we wrote in class

https://www.dropbox.com/sh/37pn4k9ng6xl1bx/AABlHYaOvcIBvcjC5pObgfs3a?dl=0

Demo Rails App we wrote in class