noonething

GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

Production Web Server Setup and Deployment Guide

This is a detailed runbook for setting up a production server on an Ubuntu 16.04 cloud VPS for automated deployment of static web content to be served by an NGINX web server and Node.js web application behind an NGINX reverse-proxy, both with SSL/TLS (https) support.

The steps are as follows:

Create a VPS instance
Set Up Server Security
1. Update Server Software
Create a non-root user

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

A Russian translation of this article can be found here, contributed by Timur Demin.
A Turkish translation can be found here, contributed by agyild.
There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

	"""Dag Factory"""
	from datetime import datetime
	from airflow import DAG

	def create_dag(schedule, default_args, definition):
	"""Create dags dynamically."""
	with DAG(
	definition["name"], schedule_interval=schedule, default_args=default_args
	) as dag:

	# token.pickle stores the user's credentials from previously successful logins
	if os.path.exists('token.pickle'):
	print('Loading Credentials From File...')
	with open('token.pickle', 'rb') as token:
	credentials = pickle.load(token)


	# Google's Request
	from google.auth.transport.requests import Request

	import tkinter as tk
	from tkinter import messagebox
	from tkinter import ttk


	"""
	Useful Links:
	https://stackoverflow.com/questions/7546050/switch-between-two-frames-in-tkinter Most useful in my opinion
	https://www.tutorialspoint.com/python/python_gui_programming.htm
	https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/index.html

	import re
	from collections import Counter
	import spacy
	from graph_show import GraphShow
	import itertools
	from collections import defaultdict



	class NewsMining():

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)