adamwatters

/*
  Arduino Yún Bridge example

 This example for the Arduino Yún shows how to use the
 Bridge library to access the digital and analog pins
 on the board through REST calls. It demonstrates how
 you can create your own API when using REST style
 calls through the browser.

 Possible commands created in this shetch:

adamwatters

/*
  Yún HTTP Client

 This example for the Arduino Yún shows how create a basic
 HTTP client that connects to the internet and downloads
 content. In this case, you'll connect to the Arduino
 website and download a version of the logo as ASCII text.

 created by Tom igoe
 May 2013

adamwatters

##Introduction and Relational Databases

DBMS database managament systems

efficient - 1000s of queries/updates per second.

reliable - 99.9999%

convenient - physical data independence, abstraction from the details of how the data

adamwatters

##Relational Algebra

formal language underpinning of SQL

operators select, project, join

queries (experessions) operate on relations and return relations

adamwatters

SQL

• Implemented standard
• Declarative, based on relational algebra
• supported by all major dms
• unordered model

DDL - Data Def Lang

• create table
• drop table

adamwatters

NoSQL Databases

1980s Rise of Relational Databases

• persistence
• transactions
• reporting
• integration
• sql

Problem

adamwatters

trello

http://blog.trello.com/refining-the-way-we-structure-our-css-at-trello

tools

use less

"I don’t know what I would do with loops and guards and math in CSS but I doubt it would be good."

mostly user: imports, data-uri, vars, shallow nesting, and mixins for vender-preftix

adamwatters

Binary Trees

https://visualgo.net/bst

adamwatters

What is the JS event loop?

How does JS even work?

• v8 (chromes run time)
• single threaded
• callbacks

js says...

"a signle-threaded non-blocking asynchronous concurrent language"

adamwatters

const spaceAt = (board, x, y) => {
  if (x < 0 || x > board[0].length - 1) {
    return 'outOfBounds'
  }
  if (y < 0 || y > board.length - 1) {
    return 'outOfBounds'
  }
  return {content: board[y][x], x: x, y: y}
}