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from __future__ import print_function # Python 2/3 compatibility
import boto3
import json
import decimal
from boto3.dynamodb.conditions import Key, Attr

# Helper class to convert a DynamoDB item to JSON.
class DecimalEncoder(json.JSONEncoder):
    def default(self, o):
        if isinstance(o, decimal.Decimal):

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version: '2'

services:
  redis:
    image: redis:alpine
    container_name: redis_db
    command: redis-server --appendonly yes
    ports:
      - 6379:6379
    volumes:

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- Find an API that supplies the data. 
  - I found the one that MarineTraffic.com uses (http://www.marinetraffic.com)
  - Open your computer's terminal, and paste this:
    curl 'http://www.marinetraffic.com/ais/getjson.aspx?sw_x=0&sw_y=70&ne_x=30&ne_y=80&zoom=6&fleet=&station=0&id=null' -H 'Referer: http://www.marinetraffic.com/ais/'
  - This shows you all the data. You will now need to automate calling this API

- Get the data from the API using something like jQuery:
  - Documentation: http://api.jquery.com/jQuery.getJSON/
  - Tutorial :http://www.youtube.com/watch?v=3hN4PrJ7R6A

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class Solution(object):
   def lengthOfLongestSubstring(self, string: str) -> int:
        sub  = {}
        cur_sub_start = 0
        cur_len = 0
        longest = 0

        for i, letter in enumerate(string):
          if letter in sub and sub[letter] >= cur_sub_start:
              cur_sub_start = sub[letter] + 1

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Django Crash Course Commands

# Install pipenv
pip install pipenv

# Create Venv
pipenv shell

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VSCode - ESLint, Prettier & Airbnb Setup

1. Install ESLint & Prettier extensions for VSCode

Optional - Set format on save and any global prettier options

2. Install Packages

npm i -D eslint prettier eslint-plugin-prettier eslint-config-prettier eslint-plugin-node eslint-config-node

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<?php

function getListingsViaSoap($zipcode) {

    $url = "http://www.tracmedia.com/lol/LOLService.asmx";

    $soap_request = '<?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
    <InTheLife xmlns="http://tracmedia.org/">

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POSTGRESQL CHEATSHEET

Basic commands

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

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Download Plural Sight videos

Software required:

youtube-dl

After installation and putting the youtube-dl in PATH

youtube-dl \