Misha Sebalo obliviusm

Rake

rake -T -A Run from your Rails home directory to see all the tasks that rake knows about. Yours must be in that list for rake to run it.
http://stackoverflow.com/questions/12409544/how-to-disable-rack-mini-profiler-temporarily
run rails in production mode lacaly: bundle exec rake assets:clean && bundle exec rake assets:precompile && bundle exec rails s -e production_local
bundle exec rake konacha:serve
rake time:zones:all - all available time zones

Git

Reset all changes after last commit in git First reset the changes git reset HEAD --hard then clean out everything untracked git clean -fd
Removing multiple files from a Git repo that have already been deleted from disk git ls-files --deleted -z | xargs -0 git rm

Chapter 1 - Object Oriented Design

The purpose of design is to allow you to do design later, and it's primary goal is to reduce the cost of change.

SOLID Design:

Single Responsibility Principle: a class should have only a single responsibility
Open-Closed Principle: Software entities should be open for extension, but closed for modification (inherit instead of modifying existing classes).
Liskov Substitution: Objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program.
Interface Segregation: Many client-specific interfaces are better than one general-purpose interface.

Abstract

You could have postgre installed on localhost with password (or without user or password seted after instalation) but if we are developing we really don't need password, so configuring postgre server without password for all your rails project is usefull.

Install Postgre packages

Go to Postgre Download Site

Install Postgre gem

/Gemfile

	http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
	http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

	#payload: [{"kind"=>"person"}]
	Segment.where("payload @> ?", [{kind: "person"}].to_json)

	#data: {"interest"=>["music", "movies", "programming"]}
	Segment.where("data @> ?", {"interest": ["music", "movies", "programming"]}.to_json)
	Segment.where("data #>> '{interest, 1}' = 'movies' ")
	Segment.where("jsonb_array_length(data->'interest') > 1")

	import React from 'react';
	import {
	View,
	Text,
	} from 'react-native';
	import { TextInputMask } from 'react-native-masked-text'

	export default function maskedInputTemplate(locals) {
	if (locals.hidden) {
	return null;

	#!/usr/bin/env ruby

	# List all keys stored in memcache.
	# Credit to Graham King at http://www.darkcoding.net/software/memcached-list-all-keys/ for the original article on how to get the data from memcache in the first place.

	require 'net/telnet'

	headings = %w(id expires bytes cache_key)
	rows = []