Roberto Ruiz artificemm

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

How to build a notification feed using Stream

Introduction

In this tutorial we are going to show how easy it is to build a notification feed using GetStream.io. First of all, let's quickly introduce you to our fictional example app. It's called bug-your-friends.com and allows you interact with your friends, ping them, follow them or poke them. Here's a quick list of example interactions:

poke another user (eg. Thierry pokes Alessandra)
follow a user (eg. Tommaso follows Iris)
ping a user (eg. Josie pings Carolina)

Whenever a user is part of one of these interactions, we want to update his notification feed, update the number of unseen and unread

Lambda: standard

# Creating a lambda
l = lambda { |name| "Hi #{name}!" }

# Executing the lambda
l.call("foo") # => Hi foo!

Pry Cheat Sheet

Youtube Tutorial 2013

Command Line

pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
pry -r ./config/environment.rb - load your rails into a pry session

Debugger

Using rails_admin without devise

Having a buckload of code to authorize users on your application is something you may like or not. Speaking for myself I hate it. But I still love rails_admin, here's how you install it without devise. Thanks to phoet for providing the hints in the gist I have forked from.

Add RailsAdmin to your Gemfile

do NOT add devise

gem "rails_admin", :git => "git://github.com/sferik/rails_admin.git"

	# http://adventofcode.com/2017/day/1

	defmodule Day1 do
	def sum1(digits), do:
	digits
	\|> Stream.concat(Enum.take(digits, 1))
	\|> Stream.chunk_every(2, 1, :discard)
	\|> Stream.filter(&match?([el, el], &1))
	\|> Stream.map(&hd(&1))
	\|> Enum.sum()

	#!/usr/bin/env ruby
	# gem install sinatra --no-document
	# gem install github-markdown --no-document
	require 'sinatra'
	require 'github/markdown'
	set :port, 3000

	get '/' do
	<<-EOT
	<!DOCTYPE html>

	#!/usr/bin/env ruby
	# generate a single sentence from a canonical form
	# canonical sentence is a multi sentences combined in one
	# form, generator will generate a sentence from it randomly
	# based on the form, for example:
	# "Hello [Emad\|Elsaid]" , may generate "Hello Emad" or
	# "Hello Elsaid" the result is random.
	# also you could nest [] inside each other to gain a multi level
	# canonical sentence example:
	# "[[Hi\|Hello] [Emad\|elsaid] \| good [morning\|night] sir]"

	#!/usr/bin/env ruby

	# Credits to :
	# http://stackoverflow.com/questions/16365553/creating-gist-from-a-ruby-script
	# i modified the script alittle bit to read files from params
	require 'net/http'
	require 'json'


	uri = URI("https://api.github.com/gists")

	# this monit config goes in /etc/monit/conf.d

	check process puma_master
	with pidfile /data/myapp/current/tmp/puma.pid
	start program = "/etc/monit/scripts/puma start"
	stop program = "/etc/monit/scripts/puma stop"
	group myapp

	check process puma_worker_0
	with pidfile /data/myapp/current/tmp/puma_worker_0.pid