rgordeev

//   Lutz Prechelt: An Empirical Comparison of Seven Programming Languages

val in = scala.io.Source.fromURL("http://lamp.epfl.ch/files/content/sites/lamp/files/teaching/progfun/linuxwords.txt")

val words: List[String] = in.getLines().toList

val mnemonics: Map[Char, String] = Map('2' -> "ABC", '3' -> "DEF", '4' -> "GHI", '5' -> "JKL", '6' -> "MNO", '7' -> "PQRS", '8' -> "TUV", '9' -> "WXYZ", '0' -> " ")

/*
  Получаем на основе карты `mnemonics` отношение Цифра -> Символ

rgordeev

/**
 * User: rgordeev
 * Date: 30.11.15
 * Time: 16:15
 */

package patmat

import common._

rgordeev

// Натуральные числа
abstract class Nat{
    // является ли нулем
    def isZero: Boolean
    // возвращает предыдущее натуральное число
    def predecessor: Nat
    // возвращает следущее натуральное число
    def successor: Nat = new Succ(this)
    // возвращает результат сложения с that
    def +(that: Nat): Nat

rgordeev

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

rgordeev

- hosts: localhost
  gather_facts: no
  tasks:
  - local_action:
      module: slack
      domain: hexlet.slack.com
      token: {{ slack_token }}
      msg: "deploy started: {{ rails_env }}:{{ hexlet_image_tag }}"
      channel: "#operation"
      username: "{{ ansible_ssh_user }}"