sagivo

function encrypt(text){
  var cipher = crypto.createCipher('aes-256-cbc','d6F3Efeq')
  var crypted = cipher.update(text,'utf8','hex')
  crypted += cipher.final('hex');
  return crypted;
}

function decrypt(text){
  var decipher = crypto.createDecipher('aes-256-cbc','d6F3Efeq')
  var dec = decipher.update(text,'hex','utf8')

sagivo

server {
  listen 0.0.0.0:80;
  listen [::]:80 default_server ipv6only=on;
  server_name localhost;
  access_log /var/log/nginx/app.log;
  root /usr/share/nginx/html/app-static;
  index index.html;

  location /v1 {
    proxy_set_header X-Real-IP $remote_addr;

sagivo

var settings = {payToAddress: 'YOUR_BITCOIN_ADDRESS'};
var ac = require('accept-bitcoin')(settings);
//generate new key for transaction
key = ac.generateAddress({alertWhenHasBalance: true});
console.log("Hello buyer! please pay to: " + key.address());
key.on('hasBalance', function(amount){
  console.log "thanks for paying me " + amount; //do stuff
  //transfer the amount recived to your account
  key.transferBalanceToMyAccount(function(err, d){
    if (d.status === 'success') console.log("Cool, the bitcoins are in my private account!");

sagivo

var settings = {network: 'live'};
var acceptBitcoin = require('accept-bitcoin');
ac = new acceptBitcoin('YOUR_BITCOIN_ADDRESS', settings);
//generate new key for transaction
key = ac.generateAddress({alertWhenHasBalance: true});
console.log("Hello buyer! please pay to: " + key.address());
key.on('hasBalance', function(amount){
  console.log("thanks for paying me " + amount); //do stuff
  //transfer the amount recived to your account
  key.transferBalanceToMyAccount(function(err, d){

sagivo

def perm arr, i=0
  return p arr if i == arr.size
  (i..arr.size-1).each do |j|
    arr[i], arr[j] = arr[j], arr[i]
    perm arr, i+1
    arr[i], arr[j] = arr[j], arr[i]
  end
end

perm 'ABC'

sagivo

byte-size tuts

by alexander white ©

golang tutorials

• 0 - installation on a Mac
• 1 - packages
• 2 - remote packages
• 3 - variable syntax
• 4 - functions syntax
• 5 - loops syntax

sagivo

byte-size tuts

by alexander white ©

golang tutorials

• 0 - installation on a Mac
• 1 - packages
• 2 - remote packages
• 3 - variable syntax
• 4 - functions syntax
• 5 - loops syntax

sagivo

import "sort"

func main() {
  arr := []int{2,4,3,1}
  sort.Ints(arr)
  fmt.Println(arr) // => [1,2,3,4]
}

sagivo

func merge_sort(l []int) []int {
  if len(l) < 2 {
    return l
  }
  mid := len(l) / 2
  a := merge_sort(l[:mid])
  b := merge_sort(l[mid:])
  return merge(a, b)
}

sagivo

$ go test -bench=. -cpu 4 -benchtime 10s mergesort_test.go
testing: warning: no tests to run
PASS
BenchmarkMSAsync-4	      10	1450210929 ns/op
ok  	command-line-arguments	20.887s

$ go test -bench=. -cpu 4 -benchtime 10s quicksort_test.go
testing: warning: no tests to run
PASS
BenchmarkQS-4	       5	2101334470 ns/op