richashworth

!pip install textblob 'spacy==3.0.0'
!python -m textblob.download_corpora
!python -m spacy download en_core_web_trf
import spacy
import en_core_web_trf
nlp = en_core_web_trf.load()

richashworth

AWS Notes

Exam tips {#Exam tips}

• Memorize formulae for WCU and RCU from DynamoDB
• AZs end in letters; Regions end in numbers

EC2 {#EC2}

richashworth

fswatch -0 . | xargs -0 -n 1 -I {} sh -c  "clear; echo '\033[0;32mRunning {}\033[0;37m'; echo; kscript {} ; echo;"

richashworth

Set up credentials in the Developer Console using OAuth2 and a Service Account:

1. Create a Project in the Google developer console: https://console.developers.google.com
2. Enable the Google Sheets API for that project: https://console.developers.google.com/apis/api/sheets.googleapis.com
3. Create credentials for a Web Server to access Application Data
4. Create a Service Account; name it and grant it a Project role of Editor
5. Download the credentials as client_secret.json
6. Share the spreadsheet(s) with the email in client_secret.json

Install the Google OAuth2 and Client libraries: pip install gspread oauth2client

richashworth

import cats.effect.{IO, Timer}
import cats.syntax.applicativeError._
import cats.syntax.apply._
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.duration.{FiniteDuration, _}
import scala.math._

// From https://typelevel.org/cats-effect/datatypes/io.html#example-retrying-with-exponential-backoff
def eventually[A](ioa: IO[A], initialDelay: FiniteDuration = 1.second, maxRetries: Int = 10, backOffMultiplier: Int = 1)
                 (implicit timer: Timer[IO]): IO[A] = {

richashworth

import $ivy.`org.typelevel::cats:0.9.0`, cats.{Monoid, Show}

case class LCDDigit(firstRow: String, secondRow: String, thirdRow: String)

object LCDDigit {
  implicit val ShowInstance = Show.show[LCDDigit](_.productIterator mkString "\n")

  implicit val ConcatMonoid = new Monoid[LCDDigit] {
    override def empty = LCDDigit("", "", "")
    override def combine(l1: LCDDigit, l2: LCDDigit): LCDDigit =

richashworth

import $ivy.`org.typelevel::cats:0.9.0`, cats.Semigroup

// Our domain entity
case class Company(name: String, value: Int)

// Some example data
val c1 = Company("A", 10)
val c2 = Company("B", 20)
val c3 = Company("C", 30)
val c4 = Company("D", 40)

richashworth

import $ivy.`com.github.julien-truffaut::monocle-core:1.4.0`, monocle.Lens
import $ivy.`com.github.julien-truffaut::monocle-macro:1.4.0`, monocle.macros.GenLens

// _.copy fine for simple cases
case class Address(line1: String, line2: String, postcode: String)
val a = Address("221B", "Baker St", "NW1 6XE")

println(a)
println(a.copy(line1 = "221A"))

richashworth

abstract sealed class Beat
case object Rest extends Beat
case object Note extends Beat
case class Note(pitch: Int, duration: Int) extends Beat

case class Pattern(beats: Seq[Beat])

def formatBeat(b: Beat): String = b match {
  case Rest => " _ "
  case Note => " X "

richashworth

class LCDDigit(val firstRow: String, val secondRow: String, val thirdRow: String)