maletor

import { IncomingMessage } from "http";
import { Agent, request, RequestOptions } from "https";

const agent = new Agent({ keepAlive: true, timeout: 10000 });

class MissingStatusCodeError extends Error {
  constructor(public url: string) {
    super("Missing a status code");
    this.name = "MissingStatusCodeError";
    this.url = url;

maletor

const buffer = require('buffer');
const crypto = require('crypto');

// Demo implementation of using `aes-256-gcm` with node.js's `crypto` lib.
const aes256gcm = (key) => {
  const ALGO = 'aes-256-gcm';

  // encrypt returns base64-encoded ciphertext
  const encrypt = (str, aad) => {
    // Hint: the `iv` should be unique (but not necessarily random).

maletor

require "benchmark"
include Benchmark

values = (0..10_000_000).to_a

bm(1_000_000) do |bench|
   bench.report("map and select") do
      values.map { |x| x * 3 }.select { |x| x % 4 == 0 } 
   end
   bench.report("inject") do

maletor

Table
-----

id  msg_id  name
1  |  1  |  Tom
2  |  1  |  Dick
3  |  1  |  Harry
4  |  2  |  Tom
5  |  2  |  Dick
6  |  3  |  Tom

maletor

Ruby and Rails Interview Questions

Ruby

• What is a class?
• What is an object?
• What is a module? Can you tell me the difference between classes and modules?
• Can you tell me the three levels of method access control for classes and modules? What do they imply about the method?
• There are three ways to invoke a method in ruby. Can you give me at least two?
• Explain this ruby idiom: a ||= b

maletor

(byebug) Survey::Token.find_by(token: params[:token], survey_id: @@survey)
nil
(byebug) Survey::Token.where(token: params[:token], survey_id: @@survey).take
#<Survey::Token id: 49078,

maletor

Bundler could not find compatible versions for gem "activesupport":
  In Gemfile:
    paperclip (~> 5.1.0) was resolved to 5.1.0, which depends on
      activemodel (>= 4.2.0) was resolved to 5.0.0.1, which depends on
        activesupport (= 5.0.0.1)

    friendly_id (~> 5.1.0) was resolved to 5.1.0, which depends on
      activerecord (>= 4.0.0) was resolved to 4.2.7.1, which depends on
        activesupport (= 4.2.7.1)

maletor

SELECT `users`.* FROM `users`
INNER JOIN `friendships` `a` ON `users`.`id` = `a`.`friend_id`
INNER JOIN `friendships` `b` ON `users`.`id` = `b`.`friend_id`
WHERE `a`.`user_id` = 1 AND `b`.`user_id` = 2

maletor

<input value={{newEmail}} 
       oninput={{action (action updateEmail) value="target.value"}} />

maletor

// app/services/invite.js

recommendationsFromStore: Ember.computed(function(){
  return this.get('store').findAll('pymkRecommendation');
}),