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

ynonp

qt.qpa.cocoa.screens: Adding QCocoaScreen(0x7f9f26d67de0, index=0, native=<NSScreen: 0x7f9f26d1fbe0>, geometry=QRect(0,0 1440x900), dpr=1, name="Color LCD")
Unable to load translation for locale  "en_IL" , use en_US by default
exeCount set to:  155
qt.scenegraph.general: threaded render loop
qt.scenegraph.general: Using sg animation driver
qt.scenegraph.general: Animation Driver: using vsync: 16.67 ms
qt.quick.hover.trace: QQuickMultiPointTouchArea(0x7f9f29417090, parent=0x0, geometry=0,0 0x0) false -> true
qt.quick.hover.trace: Loading_QMLTYPE_11(0x7f9f29416d50, parent=0x0, geometry=0,0 0x0, z=10001) false -> true
qt.quick.hover.trace: QQuickRootItem(0x7f9f2954aab0, parent=0x0, geometry=0,0 0x0) false -> true
qt.quick.focus: QQuickWindowPrivate::setFocusInScope():

ynonp

const f = (x) => x * 2;
const g = (x) => ( x * 2 );
const i = (x) => { return x * 2 };
const j = x   => x * 2;

(state + props) => DOM


class TimeConverter extends React.Component {

ynonp

import React from 'react';
import PropTypes from 'prop-types';

export default class DiscussionBox extends React.Component {

  static propTypes = {
    discourseUrl: PropTypes.string.isRequired,
    discourseEmbedUrl: PropTypes.string.isRequired,
  };

ynonp

defmodule Day24 do

  def strength(bridge) do
    bridge
    |> Enum.reduce(0, fn { p1, p2 }, acc -> acc + p1 + p2 end)
  end

  def find_max_bridge(start, []) do
    { start, strength(start) }
  end