Arthur Rocha de Menezes arthurstomp

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Ruby Decorator Design Pattern

While styding the Decorator Design Pattern i read there was a drawback on implementing the Decorator pattern using the module + extend + super implementation.

The drawbacks of this implementation are

can not use the same decorator more than once on the same object

difficult to tell which decorator added the functionality

	dbus-monitor "interface='org.freedesktop.Notifications'" \|\
	grep --line-buffered "string" \|\
	grep --line-buffered -e method -e ":" -e '""' -e urgency -e notify -v \|\
	grep --line-buffered '.(?=string)\|(?<=string).' -oPi \|\
	grep --line-buffered -v '^\s*$'

	set nocompatible
	filetype off
	set encoding=UTF-8

	set nobackup
	set nowritebackup
	set noswapfile

	call plug#begin('~/.local/share/nvim/plugged')
	" Aesthetics

	" Plugins
	call plug#begin('~/.local/share/nvim/plugged')
	" Aesthetics - Main
	Plug 'vim-airline/vim-airline'
	Plug 'vim-airline/vim-airline-themes'
	Plug 'ryanoasis/vim-devicons'
	Plug 'junegunn/goyo.vim'
	Plug 'junegunn/limelight.vim'
	Plug 'junegunn/vim-journal'
	Plug 'junegunn/rainbow_parentheses.vim'

	class Romans
	@@romans = {
	1000 => 'M',
	900 => 'CM',
	500 => 'D',
	400 => 'CD',
	100 => 'C',
	90 => 'XC',
	50 => 'L',
	40 => 'XL',

	require "active_record"

	namespace :db do

	db_config = YAML::load(File.open('config/database.yml'))
	db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'})

	desc "Create the database"
	task :create do
	ActiveRecord::Base.establish_connection(db_config_admin)

	# at /etc/network/interfaces
	auto lo

	iface lo inet loopback
	iface eth0 inet dhcp

	allow-hotplug wlan0
	auto wlan0

	var express = require('express')
	var app = express();
	var expressWs = require('express-ws')(app);
	var si = require('systeminformation');

	const port = 4000
	var totalSubs = 0
	app.ws('/sub', (ws, req) => {
	totalSubs += 1;
	console.log('Total subscriptions : '+totalSubs);