./c² cagataycali

.1

sudo apt-get update && sudo apt-get install -y xvfb x11-xkb-utils xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic x11-apps clang libdbus-1-dev libgtk2.0-dev libnotify-dev libgnome-keyring-dev libgconf2-dev libasound2-dev libcap-dev libcups2-dev libxtst-dev libxss1 libnss3-dev gcc-multilib g++-multilib

.2

DEBUG=nightmare xvfb-run --server-args="-screen 0 1024x768x24" node index.js

.3

pm2 start run.sh --name demo

	/*
	Usage;
	$ mongo countly countly.clean.db.js
	*/

	db.sessions.remove()
	db.users.remove()
	db.carriers.remove()
	db.locations.remove()
	db.realtime.remove()

	from django.db import ProgrammingError, models
	from django.db.models.constants import LOOKUP_SEP
	from django.db.models.query import normalize_prefetch_lookups
	from rest_framework import serializers
	from rest_framework.utils import model_meta

	class OptimizeModelViewSetMetaclass(type):
	"""
	This metaclass optimizes the REST API view queryset using `prefetch_related` and `select_related`
	if the `serializer_class` is an instance of `serializers.ModelSerializer`.

	const io = require('socket.io')()

	let user = 0

	io.on('connection', socket => {

	++user

	console.log('Someone connected');
	io.sockets.emit('event', `${user} Online`)

	pragma solidity ^0.4.25;

	// This contract is an example, not to be used in production
	// One example issue is that there are potential overflow/underflow bugs.

	contract UnsafeERC20 {
	mapping (address => uint256) private _balances;

	uint256 private _totalSupply;