yanmhlv

require 'digest'


def get_hash(string=nil, file=nil, method='md5')
  raise RuntimeError if string.nil? && file.nil?

  method = method.upcase
  method = Digest.class_eval(method)
  if string
    hash = method.hexdigest(string)

yanmhlv

module Functional
  def apply(enum)
    enum.map &self
  end
  alias | apply

  def reduce(enume)
    enum.inject &self
  end
  alias <= reduce

yanmhlv

require 'optparse'

options = {}
optparse = OptionParser.new do |opts|
  options[:verbose] = false
  opts.banner = "Usage: #{$0} --option=value"
  opts.on('-v', '--verbose') {options[:verbose] = true}

  opts.on('-h', '--help') do
    puts "Help message"

yanmhlv

#!/bin/sh
### BEGIN INIT INFO
# Provides: btsync
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Should-Start: $network
# Should-Stop: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Multi-user daemonized version of btsync.

yanmhlv

rsync -av -e ssh pi@192.168.0.1:~/logs/* ./logs/ # копирование с помощью rsync

yanmhlv

# Gemfile
gem 'rails_admin'
gem 'paperclip'

yanmhlv

package main

import "fmt"

func main(){
    a := 3
    if a == 3 {
        fmt.Println("1. if-else, a == 3")
    } else {
        fmt.Println("1. if-else, a != 3")

yanmhlv

import timeit

time_python = timeit.timeit("""
from itertools import groupby
from random import randint
import pandas as pd

accruals = [
    {'account': i, 'value': i * randint(0, 20), 'foo': randint(0, 10)}
    for i in range(5000)

yanmhlv

package main

import "log"


func groupBy(vars []int) map[int][]int {
    result := make(map[int][]int)
    for _, value := range vars {
        result[value] = append(result[value], value)
    }

yanmhlv

var numCPUs = require('os').cpus().length;
var cluster = require('cluster');
var count=0;

if (cluster.isMaster) {
  for (var i = 0; i < numCPUs; i++) {
    cluster.fork();
  }

  cluster.on('exit', function(worker, code, signal) {