oleksiilevzhynskyi

### Quiz:

1. What is result of next line of code?

        typeof null

   Answer:
    * `null`
    * `object`
    * `undefined`

oleksiilevzhynskyi

#
# A CORS (Cross-Origin Resouce Sharing) config for nginx
#
# == Purpose
#
# This nginx configuration enables CORS requests in the following way:
# - enables CORS just for origins on a whitelist specified by a regular expression
# - CORS preflight request (OPTIONS) are responded immediately
# - Access-Control-Allow-Credentials=true for GET and POST requests

oleksiilevzhynskyi

#Quiz:

1. What’s the result of:

    function A() {}
    A.prototype.name = 'A';
   
    var a = new A();
    var b = new A();
   

oleksiilevzhynskyi

#Quiz:

1. What’s the result of:

    console.log(f());
    function f() {
        return 1;
    }
   

Answers:

oleksiilevzhynskyi

Answer this questions to check you general understanding of the topic:

Quiz:

1. How do you write a conditional statement for executing some code if i is equal to 5?

   • if (i==5)
   • if i=5
   • if i=5 then
   • if i==5 then

2. What is an array?

oleksiilevzhynskyi

sudo ifconfig en0 down; sleep 1; sudo ifconfig en0 up

oleksiilevzhynskyi

Write a program, which outputs numbers from 0 to 1000 without:

loops (do, while, for, etc.)
jumps (goto)
exceptions
conditions
boolean operators (and, or, etc.)
comparison operators (<, >, etc.)
ranges
preprocessor shit

oleksiilevzhynskyi

sudo chown -R $USER /usr/local
sudo chown -RL mysql:mysql /usr/local/mysql/data

oleksiilevzhynskyi

{
  "args":
  {
    "cycle": "previous"
  },
  "auto_complete": false,
  "color_scheme": "Packages/Color Scheme - Default/Sunburst.tmTheme",
  "command": "alternative_autocomplete",
  "context":
  [

oleksiilevzhynskyi

t1 = Time.now
file = File.new(ARGV[0] || "input.txt", "r")
numbers = file.readlines.map!(&:to_i)
p Time.now - t1

[231552, 234756, 596873, 648219, 726312, 981237, 988331,1277361,1283379].each do |x|
  tmp = Array.new(numbers.size)
  time = Time.now
  res = numbers.detect { |el| tmp[el] || ((x - el) > 0 && (tmp[x - el] = true) && false) } ? 'yes' : 'no '
  p "#{'%7.0f' % x} - #{res} - #{Time.now - time}"